ON Y CHOTEU THID2E : ON Y CHOTEUTHIS. 
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- 
like 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.; 
B" Orb. 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 
Hiibner, 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. xxvii. 
137., Journ. de Phys. lxxxvi. 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. ; D'Orb. 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. lxxxvi. 126. ; Feruss. Diet. Class . iii. 67. 
Sepia loligo Fabricius , Faun. Groenl. 359. 
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