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DR. GWYN JEFFREYS ON MOLLUSCA OF THE [Apr. 16, 



Two new and remarkable species of Terebratula (viz. T. trigona 

 and T. subquadrata) were dredged by Mr. Saville Kent in 1871 off 

 the coast of Portugal ; and these species I propose to describe and 

 figure, because my dredgings in the 'Porcupine' Expedition of 1870 

 were nearly on the same ground. Mr. Kent's discovery confirms my 

 previous statement and unchanged impression, that we know very 

 little of the deep-water fauna, and that it is an inexhaustible field of 

 research. Terebratula tenera, from the 'Valorous' Expedition, is 

 also figured. 



I will notice very briefly the other Brachiopods of the European 

 seas, which were not procured in the ' Lightning ' or ' Porcupine ' 

 Expedition. 



For the illustrations accompanying this paper, and for other valu- 

 able assistance, I am indebted to my friend Mr. Davidson. 



