The formation of the family Ommatobrephidæ for Ommatobrephus Nicoll has been accepted.

With the help of the material from Zamenis mucosus the species O. folium Thapar & Ali has been shown to be a synonym of O. lobatum Mehra. The descriptions of this species given by Mehra and Thapar & Ali have been critically reviewed. Measurements of the material of O. lobatum at the writer's disposal have been given.

Acanthostomum burminis (Bhalerao) from Tropidonotus piscator in Nagpur has been recorded.

The synonymy of Lepodermatidæ Odhner with Plagiorchidæ Lühe has been discussed and the latter name has been accepted in preference to the former.

The family status of Cephalogonimidæ has not been agreed upon, but Cephalogoniminæ as a subfamily of Plagiorchidæ has been accepted.

Variations occurring in Cephalogonimus amphiumœ obtained from Lissemys punctata in Nagpur have been noted and the species C. gangeticus Pande and C. magnus Sinha have been shown to be its synonyms. A review of the various species of Cephalogonimus recorded up to the present moment has been made. Measurements of the writer's specimens of C. amphiumœ have been given.

The new species, Styphlodora nicolli, from the intestine of Zamenis mucosus has been described and separated from the allied species of the genus. A key to the existing species of Styphlodora has been given.

Encyclometra colubrimurorum (Rud.) has been recorded from Zamenis mucosus in Calcutta.

Tremiorchis ranarum Mehra & Negi has been recorded from Rana tigrina in Karnal. The synonymy of Centrovitus pentadelphi Bhalerao with the former species has been pointed out.

An adult specimen of Astiotrema loossi Mehra obtained from Lissemys punctata has been described and many differences existing between it and the immature specimen described by Mehra have been pointed out. The species A. gangeticus has been shown to be a synonym of A. loossi.

The new species, Astiotretna rami, has been described and separated from the allied species. A review of the existing species of Astiotrema has been made and a key to them has been given. A. odhneri n.sp. is proposed to replace A. reniferum of Odhner, 1911.

In the case of the species Pleurogenes gastroporus observations are recorded in regard to the excretory pore, the position of the receptaculum seminis and the shell gland and the relative size of the suckers. The tendency to form new subspecies is deprecated.

The new species Ganeo korkei has been described and separated from the allied species. Its specific diagnosis has been given.

Ganeo tigrinum has been recorded from Rana tigrina in Nagpur.

In the case of Mehraorchis ranarum observations have been recorded with regard to the position of mouth and oral sucker, prepharynx, pharynx, in stinal fork, testes, ovary, receptaculum seminis, uterus and the excretory bladder. Measurements of the material from Nagpur have been given.

The new species Prosthodendrium pushpai has been described and separated from the allied species.

The formation of the new genus Prosthodendrium Dollfus, 1931 for the species having vitellaria anterior to testes and retention of Lecithodendrium for those having vitellaria posterior to testes has been approved of. The genera Mesodendrium and Acanthatrium have been considered to be synonyms of Lecithodendrium and Prosthodendrium respectively. Reasons for so doing have been given.

A key to the species of the genus Prosthodendrium has been given.

The species P. cordiforme from Nyctinomus plicatus in Rangoon and P. ovimagnosum from Nycticejus pallidus in the Punjab have been recorded.

The species Opisthorchis noverca from the wild dog, Cyon dukhunensis, in Calcutta has been studied and found to possess a prepharynx and no spines on the cuticle. Typical Opisthorchis noverca from a dog in the Punjab has been recorded.

Echinochasmus perfoliatus from cats in Calcutta and Muktesar has been recorded.

The non-tuberculate variety of Schistosoma spindalis has been recorded from a calf in Coorg.

Halipegus mehransis has been recorded from Rana tigrina in Nagpur and in view of the variations occurring in this species the variety minutum has been abolished.

Halipegus sp. has been recorded from the intestine of Rana tigrina in Nagpur.

A critical review is given of the various species of Haplorchis (Heterophyidæ) recorded so far. The species H. taichui from cats in Calcutta and Muktesar has been recorded and measurements of a few of its organs given.

History of the discovery of Isoparorchis hypselobagri is given and a few more hosts harbouring the larval forms are recorded.

The question of the immunity of the pig to ascariasis has been considered by helminthologists for some years and is still a vexed question. Ransom (1922) was of the opinion that the pig became immune at the age of 4 months but this was refuted by Morgan of the Institute of Agricultural Parasitology who, in 1931 successfully infected pigs at the age of 10 months and by the present writer (1934) at the age of a year. Sandground in 1929 referred to the difficulty of establishing infections under normal conditions though it is well known that almost every pig under field conditions picks up an infection at an early age. Furthermore, it is notoriously difficult to keep pigs “clean” for experimentation though this can be done, as it is done here, by careful attention to detail during rearing.

The sudden occurrence of severe attacks of A. dipsaci on cultivated plants has never been completely explained. Goodey (1933 and 1936) has summarised the information on the subject of seed-borne infection by means of the seeds of cultivated and wild hosts. The same writer also suggests that weeds may play an important rôle in maintaining an active eelworm infestation in the soil by acting as hosts for strains of the eelworm capable of producing diseased conditions in cultivated crops.

Page 163, for “Euretrema” read “Eurytrema.”

Page 164, line 8 from bottom, for “Patynosomum” read “Platynosomum.”

Page 174, for “Mesocleum” read “Mesocœlium.”

Page 174, for “Mesocœlium leiper n. sp.” read “Mesocœlium leiperi n. sp.”

Page 176, line 10 from top, for “micron” read “microon.”