[221] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 431 



I have already described. The mandibles are nearly black; their ante- 

 rior alar edges have a deep notch and a prominent tooth. 



The color, which is partially preserved on the arms and ventral .side 

 of the body, agrees very well with that of Ommastreplies illecebrosus. 

 The skin is bluish or pinkish, thickly specked with small purplish brown 

 chromatophores. 



Architeuthis princeps ? V. (No. 28.) 



In a letter from the Rev. M. Harvey, dated December 19, 1881, he in- 

 forms me that he had been told by Mr. C. D. Chambers, magistrate of 

 Harbour Buffet, Placentia Bay, X. F., that a very large specimen of 

 Architeuthis had been found on the beach at Hennesey's Cove, Long 

 Island, Placentia Bay, during the first week of November last. This 

 was discovered by Albert Butcher and George TVareham, who cut a 

 portion from the head. The specimen had been much mutilated by 

 crows and other birds. The locality is uninhabited. The men esti- 

 mated the length of the body and head at 2G feet, but this is probably 

 too large an estimate. 



Conspectus of the families, genera, and species of Cephalopoda included in 



this paper. 



In the following synopsis the species that have actually been proved 

 to belong to the fauna of the northeastern coast of America, or the 

 waters adjacent, are numbered serially. They have all been personally 

 studied by me, except Taonius pavo. 



Subclass DIBRANCHIATA. (See p. [73].) 



Order I.— DECACERA Blainville. (See p. [75].) 



OIGOPSLBvE. (See p. [75].) 



The division called Oigopsidcv includes two very diverse groups, differ- 

 ing very widely in their visceral anatomy, as well as in the structure of 

 the eyes, siphon, and mantle connections. These may be called Teu- 

 thidea and Taonidea. 



The former will include all the Oigopsidse described in this paper 

 except the Desmoteuth ides. The Taonidea will include the Desmoteuthidw 

 and also several allied forms, which have usually been carelessly referred 

 to Loligopsis. 



TEUTHIDEA Verrill. 



Eyes with free lids, not stalked. Siphon with a subterminal valve. 

 Mantle attached to the siphon by free connective cartilages. Stomach 

 large, pouch-like; intestine short; liver very large ; ink-sac large. Pen 



