428 
A. E. Verrill — North American Cephalopods. 
For a brief synopsis of the previously known genera of this fam- 
ily,* see pp. 250 , 251 . 
Owen’s family, Teuthidae , included nearly all the Decacera having 
horny internal shells. As adopted by D’Orbigny, it included our 
Ommastrephidoe and Teuthidae. 
Enoploteuthis (See pp. 251, 404). 
Enoploteuthis Hartingii Verrill. (pp. 240, 241, 404). 
Enoploteuthis Molinas D’Orb.rrE. Cookii Owen. (pp. 241, 404). 
Moroteuthis Verrill. (See p. 393). 
Moroteuthis robusta (Dali) Verrill. (pp. 246, 393). 
Gonatus Gray. (See pp. 290, 387, 390). 
Gonatus amoenus Gray. (pp. 291, 388, 390). 
Lestoteuthis Verrill. (See pp. 250, 387, 390). 
1. Lestoteuthis Fabricii (Licht.) Verrill (pp. 291, 293, 387-390). 
Family OMMASTREPHIDOE. 
Teuthidce {pars) D’Orbig.. Cephal. Acetab., pp. xxxvii, 328. 
Onychoteuthidce (pars) Gray, Catal. Brit. Mus., Moll., vol. i, p. 45, 1849. 
Ommastrephidce Gill, Classification Mollusca, p. 1, 1871. 
Tryou, Man. Conch., vol. i, p. 107, 1879. 
Body elongated, often very large ( Architeuthis ), tapering to a point 
posteriorly, shorter and less acute in the female. Sessile and tentacu- 
lar arms without hooks, but provided with suckers, having denticu- 
lated, horny rings ; tentacular arms with an expanded club, having 
four rows of suckers on its middle portion, those in the two central 
rows larger; proximal portion with or without smooth-rimmed con- 
nective suckers and tubercles ; tip with a cluster of smooth-rimmed 
suckers. Siphon in a deep groove, attached by four bridles ; an internal 
valve. Eye-lids with a distinct anterior sinus. Nuchal and olfactory 
crests consist of three longitudinal membranes on each side, united 
by a transverse one in front. Connective cartilages of the mantle 
* The geuus Dosidicus Steenst., should not have been there included. It belongs to 
the Ommastrephidce , and is very closely related to Sthenoteuthis. The tentacular club 
bears denticulated suckers aud the terminal cone of the pen is hollow. 
Ancistroteuthis Krdhnii appears to belong to Onychoteutliis. Gonatus anti. Lestoteuthis 
have since been restricted and their characters revised. (See pp. 388-394). 
