[169] CEPIiALOPODS OF NORTHEASTERN COAST OF AMERICA. 
a fill, 8 ; front of fin to edge of mantle, 5; length of the free portion of 
the dorsal arms, 12.5 5 of second pair, 15; of third pair, 18; of centrals, 
13; of tentacular arms, 40; breadth of dorsal arms, at base, 3.5; of 
second pair, 3.5; of third pair, 4; of centrals, 3.5; of tentacular arms, 
at base, 2; at expanded portion, 3.5; length of latter, 10.5; diameter 
of largest suckers of sessile arms, 0.9 ; length of free portion of siphon, 
'Jmm 
This species has been taken in numerous localities, by the dredging 
parties of the U. S. Fish Commission, in 1877, 1878, and 1879, off Cape 
Cod; in Mass. Bay, 40-50 fathoms; off Cape Ann, in the Gulf of Maine, 
50-100 fathoms; off Cape Sable, N. S., 88-92 fathoms; off Halifax, 1ST. 
S., 57-100 fathoms, on a fine, compact, sand and mud bottom. It occurs 
in 40-100 fathoms. It has also been receiced through the Gloucester 
halibut fishermen, from the Banks, off Nova Scotia and Newfoundland. 
One specimen (lot 241), presented by Capt. Chris. Olsen and crew, of 
the schooner u William Thompson,” was taken in 60 fathoms, N. lat. 44° 
20', W. long. 59°. Another (lot 372), which was presented by Capt. C. 
D. Murphy and crew, of the schooner “Alice M. Williams,” was taken 
in 7 fathoms, off Miquelon Island. 
The relaticely large eggs (PI. XXXV, fig. 5) are laid in August and 
September, in small clusters, slightly attached together, in the large 
oscules or cavities of several species of sponges. 
It is frequently associated with Octopus Bairdii V, and the following 
species. 
This species has a strong general resemblance to R. glaucopis Loven, 
as figured in the admirable work of G. O. Sars, but the latter has shorter 
lateral arms, and the suckers of the sessile arms are in two rows, while 
they are four-rowed in our species. 
Iiossia Hyatti.—Specimens examined. 
Station. 
Locality. 
Fath. 
Bottom. 
When 
collected. 
Received from— 
Specimens, 
number and 
sex. 
30, 31 
33 
48 
1877. 
Aug. 13 
Aug. 14 
Aug. 21 
2j 
11. d- 
Off Cape Ann, 13tnile8.. 
Off Cape Sable, N. S., 30 
90 
42-46 
88-90 
Sandy mud. 
_do.. 
1 d : 1 $ : 3 j. 
48 
83-86 
miles. 
Off Cape Sable, N. S., 20 
milea. 
Off Halifax, N. S., 26 
59 
101 
Rocky. 
Fine sand. 
Aug. 21 
Sept. 6 
_do. 
_do. 
lj- ?• 
21. ?. 
130 
milea. 
Gulf of Maine and Mas¬ 
sachusetts Bay. 
Off Cape Ann, 14 miles.. 
49 
Mud. 
1878. 
July 23 
-do. 
3 j. 
156 
Off Gloucester, Mass., 8 
42 
Sandy mud. 
Aun. 15 
_do. 
2j- 
163 
miles. 
Off Cape Ann, 6J miles.. 
73 
Fine sand. 
Aug. 16 
....do. 
1 d: 2j. 9- 
164 
Off Cape Ann, 7 miles... 
75 
-do. 
Aug. 16 
-do. 
l 9- 
181 
Off Gloucester, Mass- 
45 
Mud. 
Aug. 29 
_do. 
4 9- 
184 
Off Gloucester, Mass., 5 
45 
-do. 
Aug. 29 
_do. 
lj- 
211 
milea. 
Off Cape Ann, 6 milea... 
60 
Soft mud. 
Sept. 17 
_do. 
lj- d : lj- 9 
214 
Off Cape Ann, 7 miles.. . 
57 
Fine muddy sand 
Sept. 17 
_do. 
l 9- 
217 
Off Cape Ann, 6 miles. .. 
45 
Soft mud. 
Sept. 18 
_do. 
11. d. 
218 
.do. 
45 
-do. 
Sept. 18 
_do. 
11. 9: lj- 
