364 



A. E. Verrill— North American Gephalopods. 



ference of l)ody, 152; length of dorsal arms, from eye, IS*/; second 

 pair, 94; of third pair, 84; of fourth pair, 134-5. 



A specimen of this interesting species was taken in Vineyard 

 Sound, Mass., by Mr. V. N. Edwards, in 1876. It was not known 

 previously from the American coast, and has been regarded as pecu- 

 liar to the Mediterranean and West Indies. 



Measurements of Parasira catenulata. 



From base of arms to tip of tail 



From base of arms to mantle 



From edge of mantle to tip of tail 



From edge of mantle to tip of tail (below) . . 



Tail to eye. 



Circumference of body 



Breadth of body .. 



Circumference of head 



Breadth of head 



Diameter of eyes 



Diameter of largest suckers .- 



Length of dorsal arms, first pair, from eye.. 

 " " " second " " 



" " " fourth " ventral-. 

 Breadth of first pair of arms at base 



" " second " " " 



" " third " " '' 



" fourth " " " 



Length of siphon 



Breadth of base of free part .. 



Breadth at tip 



The remarkable tubercles of the ventral surface mostly have five 

 ridges converging to each, rarely six. In all other respects it agrees 

 with the figures of Ferussac and D'Orbigny. According to Targioni- 

 Tozzetti, P. catenulata is distinct from P. tubereulata. If so, our 

 species should bear the former name. 



Family ARG-ONAUTID^ Cantr. 



Cantraine, Mall. Medit., p. 13, 1841; H. & A. Adams, Genera, i, p. 23. 

 Ocytlioidce Gray, Catal. Moll. Brit. Mus., i, p. 28. 



Argonauta argo Liune. 



Shells of this species, some of them entire, were taken by the 

 "Fish Hawk" at several of the stations 70 to 115 miles south 

 of Martha's Vineyard and Newport, R. I., in 64 to 365 fathoms. At 

 least nine sjiecimens were dredged. At Station 894, in 365 

 fathoms, two entire and nearly fresh shells were taken, and another 



