Recently an account of the endogenous contact-zone of the non-magnesian limestones at Ben Bullen was published in this Magazine (Joplin, 1935 a), and it is now proposed to examine the effects of normal contact metamorphism in the aureole of the Ben Bullen plutonic complex.

Among the fossils figured in the Silurian System (1839) is a cast of a dorsal valve of a brachiopod from Marloes Bay, named by J. de C. Sowerby Spirifer liratus. This form received more adequate description by Salter (1848) in the Memoirs of the Geological Survey, and in Murchison’s Siluria, and was later included under the generic name of Stricklandia, proposed by Billings (1859) for a certain section of the Pentameracea, and subsequently changed by him to Stricklandinia (1863). In subsequent descriptions, of which the most important are those of Davidson (1866), Angelin and Lindström (1880), and Schuchert and Cooper (1932), the form has always been referred to this genus.

The genus Tricycloseris was erected by R. F. Tomes in 1878 (p. 190) for a single specimen of a compound coral obtained from a fallen block on the shore near Charmouth, Dorset. The associated fauna led him to postulate a Middle Lias age for the bed from which the block was derived. A recent examination of the specimen shows that Tomes’s diagnosis was unfortunately based on a complete misconception of the coral—what he termed the “upper surface” is actually the under surface, and what he referred to as the “under surface” is, in reality, the calicular surface.