304 
A. E. Verrill— North American Gephalopods. 
fevence of body, 152; length of dorsal arms, from eye, 137; second 
pair, 04; 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 1870. 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. 
mm. 
inches. 
Left Side, 
mm. inches. 
From base of arms to tip of tail 
70 
2-75 
From base of arms to mantle 
20 
•80 
81 
3-2 
From edge of mantle to tip of tail 
51 
2-00 
From edge of mantle to tip of tail (below) 
81 
3*2 
Tail to eye 
60 
2-G0 
Circumference of body 
152 
600 
Breadth of body 
51 
2-00 
Circumference of head 
109 
4-30 
Breadth of head 
38 
1-50 
Diameter of eyes 
2 5 
•10 
Diameter of largest suckers 
3 5 
•14 
Length of dorsal arms, first pair, from eye 
134 
5-30 
109 
4-30 
“ “ “ second “ “ 
93 
3-70 
96 
3-80 
“ “ “ third “ “ 
92-5 
3-68 
89 
3-50 
“ “ “ fourth “ ventral 
149 
5-88 
134 
5-30 
Breadth of first pair of arms at base 
7-5 
•30 
8-75 
•35 
“ “ second “ “ “ 
7 
•28 
7 
•28 
“ “ third “ “ “ _ 
6-25 
•25 
625 
•25 
“ “ fourth “ “ “ 
7-5 
•30 
7-5 
•30 
Length of siphon 
58 
2-30 
Breadth of base of free part 
11-25 
•45 
Breadth at tip 
7-5 
•30 
The remarkable tubercles of the ventral surface mostly have live 
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 ARGONAUTIDjE Cantr. 
Cantraine, Mall. Medit.. p. 13, 1841 ; H. & A. Adams, Genera, i, p. 23. 
Ocythoidce 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 04 to 365 fathoms. At 
least nine specimens were dredged. At Station 894, in 305 
fathoms, two entire and nearly fresh shells were taken, and another 
