LIMACINID^. 31 



* Spire subglobose^ depressed ; axis umbilicated. Limacina. 



1. Limacina arctica. 



Shell subglobose, subdiscoidal ; spire slightly raised ; whorls 6, last 

 large, with a very obscure keel ; axis umbilicated, keeled on the 

 edge. Diam. fths of an inch. 



Limacina arctica, Loven^ Moll. Scand. Kong. Vetensh. Akad. 1847, 



188, t. 3, f. 6. 

 Argonauta Argo, Muller, J. Dan. Prod. 2877. 

 Clione Helicina, Pallas, Spic. x. 38. 

 Clio helicina, Gmelin, S. N. 3149; Phipps, Voi/. North, 195; 



Roissi, Buff. Moll. v. 59 ? Scoreshy, Arct. Reg. i. 543, t. 16, f. 11, 



12, not good. 

 Limacina arctica, Sow. Man. f. from Scoreshy ; Leach, in Ross 



Voy. Baffin's Bay, i. 172, 1819. 

 Limacina helicinalis, Lamk. Hist. No. 1, ed. 2, vii. 436 ; Sow. Gen. 



f. 3. 

 Limacine, Cuvier, Reg. Anim. ii. 380. 

 Argonauta arctica, O Fab. F. Groenl. 386 ; Moss, Voy. South and 



Antarct. Reg. ii. 143? 

 Spiratella limacina, Blainv. D. S. N. ; Malac. t. 48, f. 5, from 



Scoresby. 

 Spiratella arctica. Desk. Ency. Meth. iii. 971. 



a. b. Animal, in spirits. N. Sea. Arctic Expedition. Pre- 

 sented by Colonel Sabine. 



c, d. Animal, in spirits. Greenland. From Mr. Moller's col- 

 lection. 



2. Limacina inflata. 



Shell very thin, transparent, vitreous, discoidal, sinistral ; axis 

 umbilicated ; spire scarcely exceeding the last whorl ; whorls 3, 

 smooth, rather large, modified by the penultimate whorl, heart- 

 shaped ; peristoma disunited, nicked on each side, and with an 

 elongated, strong, slightly arched beak in front; operculum 

 glassy, veiy thin, transparent, few whorled. 



Spiriale rostrale, Eydoux ^ Souleyet, Voy. Bonite Moll. t. 15, f. 



1—10. 

 Spiralis rostralis, Eydoux ^^ Souleyet, Rev. ZooL Sac. Cuvier, 1840, 



235. 

 ? Atlanta inflata, UOrb. Voy. Amer. Merid. t. 12, f. 16 — 19, not 



good. 



