1. The sera of 18 goats were investigated for the bilharzia complement fixation reaction, using as antigen alcoholic extract of the livers of snails (Planorbis exustus) infected with cercariae of S. spindale.

2. The sera of 5 out of 7 goats harbouring S. mattheei, and of 4 out of 4 goats exposed to alimentary infection with S. bovis yielded positive results, the range of complement fixation varying from 5 to 20 M.H.D.'s.

3. The sera of non-infected goats and of 3 goats exposed to infection with cercariae of S. mansoni from which these animals appear naturally immune, yielded negative reactions.

4. The complement fixation reaction with cercarial antigen (S. spindale) has now been applied to infestation with 3 human and 4 cattle schistosomes, and its group applicability to mammalian schistosomiasis may be regarded as proven.

RECENT investigations carried out by the senior writer on the incidence of parasitic helminths in the alimentary tract of sheep in the north of Scotland have demonstrated heavy losses in lambs due to parasitic gastritis. In the autumn of 1932 six severe outbreaks were recorded in the counties of Kincardine, Aberdeen and Moray, but no doubt this number would have been greatly exceeded had it been possible to make a comprehensive survey. Some idea of the severity of the disease may be judged by the fact that several farmers lost from 10–20 per cent, of their lambs.

ALTHOUGH some marsupials are insectivorous or carnivorous in diet many others are vegetarian in diet and frequently cause appreciable damage to pastures and crops and therefore are of considerable economic importance. Recently, during the course of searching the literature for references to helminth infections in marsupials it was observed that, in certain cases, hosts other than marsupials were involved and in some instances were of economic importance in that they were domesticated animals. Whether or not marsupials assist in the spread of parasitic infection is somewhat inadequately dealt with in the literature but one cannot lose sight of their acting as reservoir hosts.

Filaria ozzardi Manson, 1897, or as it is recently but less familiarly known, Mansonella ozzardi, was first described in its larval stage, having been found in the blood of Caribs of British Guiana. The adult form of which the female only was found by Daniels (1899) in the subperitoneal connective tissue of Indians from the same region, is very inadequately described.

Page 8, line 6 from top, for Eleophora read Elaeophora.

Page 126, line 5 from bottom, for spingle-shaped read spindle-shaped.