ONYCHOTEUTHID^ : ONYCHOTEUTHIS. 53 



rous pore on each side, between the third and fourth pairs of arms. 

 Six buccal pores and an anal pore above the siphuncle. — Sessile 

 arms angular ; third or fourth pair with a keel or fin ; cups in 

 two alternating lines ; rings convex and toothless. Tentacular 

 arms partly retractile, strong ; club enlarged, with a rounded 

 group of small sessile cups at each end, and two series of claw- 

 Uke hooks, the outer series largest. — Siphuncle very short, lodged 

 in a cavity, with two superior muscular bands. — Shell lanceolate, 

 pennate, as long as the back ; tip acute ; end produced, narrow ; 

 sides dilated, thin, with a central longitudinal keel contracted 

 at the end. 



Onychoteuthis (pars) Licht. Berl. Acad. 1818; Isis^ 1819, 1591. 



1820; Blainv. Malac. 1825; Desh. in Lamck. Hist. xi. 237.; 



D'Orl. Moll. Viv. et Fos.'i. 386. 

 Sepia sp. Fabricius, Faun. Groenl. 359. ; Molini. 

 Loligo sp. Leach., Blainville^ LeSueur^ Ann. Sci. Philad. 

 Onykia sp. LeSueur, Ann. Sci. Philad. ii. 99. 1821, ii. 296. 1822. 

 Onyckia Lesson, Berthold, 1827?; Latr. Fam. Nat. 1825, not 



Hubner, 1816, nor Walker, 1835. 

 Ancistrochirus Leach., MS. Brit. Mus. 1817. 

 Onychotheuthis Ferussac, Tab. Syst. 24. 1821. 



1. Onychoteuthis Banksii. 



Body very elongate, cylindrical, acuminate behind. Head with 

 eleven longitudinal small prominent ridges. Fins rhomboidal. 

 Sessile arms conico- subulate, unequal ; in length, 2, 3, 4, 1 ; 

 cups with a fleshy excrescence, compressed, pear-shaped. Ten- 

 tacular arms very extensile, apical, armed with a double series 

 of hooks ; the basal group consisting of about seven or eight 

 open and seven or eight not pierced cups, the apical group of 

 sixteen or seventeen cups all open ; hooks twenty to twenty- 

 two in two rows, those of the outer row largest. 



Loligo Banksii Leach, Zool. Miscell. iii. 141. sp. 4. 1817 ; Tuchey's 



Voy. to Congo, App. iv. 411. sp. 1.; Blainv. Diet. Sc. Nat. xxv'ii. 



137., Journ. de Phys. Ixxxvi. 125. ; Feruss, Diet. Class. 67. 



n. 8. 

 Oncistrochirus Banksii Leach, MS. B. Mus. 1817. 

 Anichoteuthis Banksii Ferussac, Tab. Ceph. 61. 1825. 

 Onychoteuthis Bergii Lichtenst. Zool. Mus. des Univ. zu Berlin, 



p. 1592. n. 4. t. 19. f. a. 1818 ; Feruss. D'Orb. Tab. Ceph. n. 5. 



p. 61. ; UOrb. Moll, des Antilles, i. 46. n. 12. ; D'Orb. et Feruss. 



Ceph. Acet. Onychoteuthis, t. 5. f. 1 — 9. from Licht. 

 Loligo Bergii Blainv. Diet. Sc. Nat. xxvii. 138. 1823, Journ. de 



Phys. Ixxxvi. 126. ; Feruss. Diet. Class, iii. 67. 

 Sepia loligo Fabricius, Faun. Groenl. 359. 



D 3 



