

DIAPHANA. 283 



level with the tip, retreats above and below, and is roundly prom- 

 inent in the middle, where it slightly bends inwards, elsewhere, it is 

 patulous; its sweep is very regular throughout. Inner lip roundly 

 curved on the body, rather deeply concave at the top of the pillar, 

 along which it runs nearly straight ; a broad pad with defined edge 

 spreads across the body, and is pretty broad and reverted on the 

 pillar with a very slight twist on its front edge and a minute umbil- 

 ical chink behind ; the lip is not emarginate in front. 



Length O15 diam. O'l. Greatest breadth of mouth in front, O05 

 inch. ( Wats.). 



Off Pernambuco, 350 fms. ; West of Azores, 1000 fms. (Watson). 

 Middle Pliocene of Calabria (Seguenza). 



Bullina undata Chiaje, SEGUENZA, Form. Terz. Calabria, p. 251, 

 pi. 16, f. 9 (Not of Chiaje). Amphisphyra seyuenzce WATSON, 

 Chall. Gastr., p. 641, pi. 48, f. 5. 



D. MINTJTA Brown. PL 26, figs. 70, 71. 



Shell very thin and fragile, hyaline, cylindric-ovate, dilated in the 

 middle, the base obliquely rounded ; vertex narrower, truncated and 

 depressed, spirally involute. Whorls 3-4, separated by a distinctly 

 impressed suture. Aperture shorter than the last whorl, quite 

 ample below ; outer lip flex nous, obtusely rounded at the upper 

 angle, slightly inflexed above the middle, roundly expanded beneath ; 

 columella short, slightly flexuous ; umbilicus narrow, chink-shaped. 



Alt. 5 mill. (Sars.). 



Scandinavia and British Is., south to Kiel Bay ; Ocean coast of 

 France ; Madeira and Canary Is. ; Palermo ; Naples. 



Bulla hyalina TURTON, Mag. Nat. Hist, vii, p. 353. Not Bulla hya- 

 lina Gmel. Amphisphyra hyalina LOVEN, Ind. Moll. Skand. MEYER 

 & MOBIUS, Fauna Kieler Bucht i, p. 67, f. 8, 9 (shell). FORBES & 

 HANLEY, Hist. Brit. Moll, iii, p. 521, pi. 114D, f. 1, 2 (shell) and 

 pi. UU, f. 2 (animal). MONTS., Journ. de Conch. 1874, p. 280. 

 LOCARD Coq. Mar. Fr. p. 29, f. 15. Utriculus hyalinus JEFFR., 

 Brit. Conch, iv, p. 428 ; v, pi. 94, f. 7 ; Ann. Mag. N. H. (4), xix, 

 p. 335. Diaphana hyalina SARS, Moll. Reg. Arct. Norv., p. 289, 

 pi. 18, f. 1 (shell); pi. xi, f. 10 (dentition). Utriculus minutus 

 BROWN, 111. Conch. G. B., (edit., 1844), p. 58, pi. 19, f. 7, 8 (very 

 young shell). U. pellucidus BROWN, t. c., p. 59, pi. 19, f. 10, 11. 

 SOWB., Conch. Icon, xviii, fig. 1. U. candidus BROWN, t. c., p. 59, 



