loligofsid^; : loligopsis. 39 



Fam. II. LOLIGOPSID^E. 



Animal membranaceous, semipellucid. 



Body elongate, tapering behind. Mantle supported by three mus- 

 cular bands ; one medial dorsal under the end of the shell, 

 and one on each side of the ventral surface. Fins caudal, 

 terminal, semicircular; their united outlines oval or rounded. 

 Ears without any crest. 



Head small, broad. Eyes lateral, anterior, peduncled, naked, 

 without any lacrymal sinus. Buccal membrane very short 

 No buccal, brachial, nor anal aquiferous pores. 



Siphuncle without any superior central band ; no internal valve. 



Shell internal, horny, elongated, slender, pennate, solid. 



Loligopsidse Gray, Syn. B. Mus. 1840, Proc. Zool. Soc. 1847, 205. ; 



D'Orb. Moll. Cuba, i. 7., Ann. Sc. Nat. xvi. 1841, Moll. Viv. el 



Fos. i. 367. 1847. 

 Teuthida3 (pars) Owen, Trans. Zool. Soc. ii. 2. 1838. 



1. LOLIGOPSIS. 



Body very much elongated, conical, attenuated. Mantle sup- 

 ported by three muscular bands ; one medial, dorsal, under the 

 end of the shell, and one on each side of the ventral surface. 

 — Head small, broad, very short, much depressed, narrow 

 behind. Eyes peduncled, very large, naked. Buccal mem- 

 brane seven-lobed, without cups. — Sessile arms conical, subu- 

 late, very contracted, rounded, very unequal. Cups oblique, 

 peduncled, in two alternating series; rings smooth. Tentacular 

 arms not retractile, slender, marginal, dorsal. — Siphuncle very 

 large, broad, elongate, nicked on the sides, without any central 

 superior band or internal valve. — Shell internal, horny, flexible, 

 slender, keeled above; very narrow, lanceolate, thickened at 

 the tip. — Living in the high seas. 



Loligopsis (Calmaret) Lamck. Extr. d. Cour. 1812; Ferussac et 



D'Orb. Ceph. 1839. 

 Loligopsis Lamck. Hist. vii. 659. 1822; B'Orb. Moll. Cuba, i. 7. 



1841, Moll. Viv. et Fos. i. 368.; Grant, Trans. Zool. Soc. Lond. 



i. 21. Anat. 1847; Owen, Trans. Zool. Soc. ii. 2. 

 Leachia LeSueur, Jour. Acad. Philad. ii. 89. 1821, not Risso, E.M. 



1826; "Lesson" Blainv. Malac. 1825. 

 Loligo sp. Blainville, Journ. de Phys. 1823. 

 Perothis Eschscholtz, MS. 1827 ?; Rathke, Mem. Acad. Petersb. 



par divers savans, ii. 1835.!] 



