38 rUOCIOEDlNGS OF THE MALACOLOGICAL SOCIETY. 



Jietiisa (?) ovafa, Jeffreys : Dall, Bull. Mus. Comp. Zooi , vol. xviii, 



p. 49. 

 Retusa ovata, Jeffreys: Pilsbiy, Man. Conch., vol. xv, p. 232. 



"Porcupine" Expedition, 1869, Stations 23, 36, 42; 1870, Stations 

 16, 17, 17«; off Cape Espichel. 



Distribution. — Widely scattered over tlie Xorth Atlantic from 

 Norway to tlie Azores, etc , and on the eastern coast ot North 

 America to the West Indies and Pernambuco; also in the Mediterranean. 

 Fossil in the Pliocene of South Europe. 



Cylichna (?) PARVULA, Jeffreys. 



Cylichna parvula, Jeffreys : Ann. Nat. Hist., ser. v, vol. xi, p. 400, 

 pi. xvi, tig. 9, 



"Porcupine" Expedition, 1870, Station 13. 

 Distri/mtion. — Bay of Biscay, 1192 fathoms (Jeffreys). 

 The specimens are, apparently, live shells, but very young, 



Cylichna propinqua (Sars). 



Bulla propinqua, M. Sars, in G. 0. Sars : Moll. Reg. Arct. Norveg., 

 p. 284. 



I record this name as there are two specimens, so identified by 

 Jeffreys, from the 1869 cruise, in a box labelled " 65, 345 f. and 74, 

 75, 200-25 f." Jeffreys does not mention in his list Stations 74 or 

 75, and probably they really came from Station 65, where the depth 

 given would be correct. As to the proper name for this form, see 

 Pilsbry (Man. Conch., vol. xv, p. 292), and Friele & Grieg (Norske 

 Nordhavs-Exped., pt. iii, p. 109). 



DIAPHANA, Brown. 



This generic name was proposed by Brown in 1827 (111. Conch. 

 Gt. Brit., 1827, explanation of pi. xxxviii) for D. mimita, pellucida, 

 Candida, n.spp. ; in 1833, in the first edition of his " Conchologist's 

 Textbook" (p. 98), the only example he gives of the genus is 

 D. Candida, which may therefore be treated as the type. 



With reference to the question mentioned by Mr. Pilsbiy (Man. 

 Conch., vol. XV, p. 280), I may say that I have seen several editions 

 of Brown's " Textbook," including the first, and they appear to be 

 identical, though 1 have not collated them line by line. One copy 

 bears the appelhition "fourth edition" on the cardboard cover and 

 " fifth edition " on the title-page. 



Two broken specimens of a species were found at Station 17, of 

 the 1870 cruise, which are in too bad condition for description. 

 Mr. Marshall notes "Near U. ventrostis [J), rentricostis^, but different 

 crown and pillar." There is also a single, apparently immature, 

 specimen from Station 56, of the 1 870 cruise, as to which Mr. Marshall 

 notes "Like I/, expansus, but has an umbilicus and a different crown." 



