36 CATALOGUE OF PTEROPODA. 



1. CLIONE. 



Head indistinct ; tentacula 6, conical, three on each side. — Tooth 

 of lingual membrane, broad, convex behind, slightly two-lobed 

 and denticulated in front; lateral teeth 12-12, simple, arched, 

 rather swollen at the base, the outer ones gradually smaller, — 

 Loverly I. c. t. 3, f. 4. 



In swimming it brings the top of its fins almost in contact, first 

 on one side and then on the other. — Scoresby, Arct. Reg. 544. 



Clione, Pallas, Spicil ZooL x. 28, 1774 ; Gmelin, S. N. ed. 13, 



3148; Moller, Ind. Moll. Groenl. 4, 1842; Bajin. Anal. Nat. 



1815. 

 Clio, O. F. Muller, Zool. Dan. Prod. 29, 1776 (not Browne, 1756) ; 



O.Fab. Faun. Groen. 334, 1780; Brug. E. M. i. 505, 1789; 



Peron Sr Lesueur, Ann. du Mus. 1810; Lamk. Syst. Anim. 62, 



1801 ; Ext. du Cours. 1812; Phil. Zool. 1809; Hist. A. S. V. vi. 



286, 1819, ed. 2, vii. 423; Cuvier, Anal. Comp. 1800; Ann. Mus. 



i. 242, 1802; Ann. Mus. 1804; Reg. Anim. 1817, ed. 2, 1830; 



Blainv. Diet. Sc. Nat. ix. 404 ; Malac. 482, 1825 ; Rang, Man. 



118, 1829 ; DOrb. Moll. Cuba, i. 70, 1841. 

 ? Amphirea, Rafin. Anal. Nat. 1815, no character or type. 

 ? Dicroptera, Rafin. Anal. Nat. 1815, no character or type. 



1. Clione borealis. 



Gelatinous, pellucid, pale blue ; mouth and end of the body scarlet 

 out of water, hyaline ; wings somewhat triangular ; tail acute. 



Ataursak, Crantz, Groen. 142. 



See Gottes Pferd, Adelung Gesch. 410, t. 17, f. 18. 



Clio papilionacea, Pallas, Spic. Zool. x. 28, t. 1, f. 18, 19. 



Clio borealis, Brug. E. M. n. I; E. M. t. 75, f. 3, 4 ; Ctivier, Ann. 



du Mus. i. t. 17; Roissi, Bujfon, Moll. v. 68, t. 52, f. 1 ; Lamk. 



Hist. ed. 2, vii. 425 ; Eschricht, Vidensk. SelsL Nat. 1838: Leach, 



in Ross, Baffin Bay, 122; Loven, Ind. Moll. Scand.i.; Kong. 



Vet. Alcad. 1847, 188, t. 3, f. 4. 

 Clio retusa, Muller, Zool. Dan. Prod. 274, 2, not Linn. ; Fab. Faun. 



Groenl. 334. 

 Clio Limacina, Phips, Ellis, Zooph. t. 15, f. 9, 10. 

 Clio Borealis or C. Limacina, Scoresby, Arct. Reg. i. 544, ii. 556, t. 



16, f. 10, from life. 



