[169] CEPHALGPODS OF NORTHEASTERN COAST OF AMERICA. 
a fin, 8; front of fin to edge of mantle, 5; length of the free portion of 
-the dorsal arms, 12.5; of second pair, 15; of third pair, 18; of ventrals, 
13; of tentacular arms, 40; breadth of dorsal arms, at base, 3.5; of 
second pair, 3.5; of third pair, 4; of ventrals, 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, 
fea 
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, N. 
8., 57-100 fathoms, on a fine, compact, sand and mud bottom. It occurs 
in 40-100 fathoms. It has also been received 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 ‘‘ 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 relatively large eggs (PI. XX XV, 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 Lovén, 
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. 
Rossia Hyatti.—Specimens examined. 
q Specimens, 
2 Locality. Fath. Bottom. i au eas Received from— nHInEe and 
nD 3 
1877. 
30,31 | Off Salem, Mass ..-..-... ASH Miudt-oose<0-025 5 Aug. 13] U.S. Fish Com..| 2 i. 
33 | Off Cape Ann, 13 miles-. SOV ee cdOts sotecs. oey Aug i, \14sias- 00 see seen nl Bios 5 
42-46 | Off ole Sable, N. S., 30 | 88-90 | Sandy mud ..... Augiy 218 |Paaedoreneecreane Pgs 19:33. 
miles. 
48 | Off ae Sable, N. S., 20 BON ROCKY: -/-cciclo => «- Antes) 20) |Saee G0) eee eee ae ay ay ee 
miles. 
85-86 | Off Halifax, N. S., 26 101 | Fine sand....... Sept.) G:|fae-dol ns seaoenas 21. 9. 
miles. 
Gulf of Maine and Mas- 
\ sachusetts Bay. 
| 1878 
130 | Off Cape Ann, 14 miles. . AQ Mirnd 4. scenes sam Julya2s |saseAO meee se est 3 j. 
156 | Off okt ai Mass., 8 42 | Sandy mud...-. Ati grb Pepe dOre casa asa 2j. 
miles. 
163 | Off Cape Ann, 64 miles... 73 | Fine sand..-.---. Ave 16) aoe GO) scmciae.> aa > 1 oe 25. 9s 
164 | Off Cape Ann, 7 miles... Ue AAO Seeaneccods Amon 1GilEas-d0rs~ 552. - 1g. 
181 | Off Gloucester, Mass. ... 0 || OG oes bo SATE 20) eae Oe nan <== 4 ¢. 
184 | Off Gloucester, Mass., 5 ARN dOucce ocee see Are 29h eee O ies sree 2 ~~ Aye 
miles. : 
211 | Off Cape Ann, 6 miles... 60 | Softmud.--.--..--. Sept.) G|e---do ~--------- aires aiid 
214 | Off Cape Ann, 7 miles... 57 | Finemuddy sand) Sept. 17 |.--.do ...-------- 19. 
217 | Off Cape Ann, 6 miles. -- 45 | Soft mud......-- Sept. 18.).--.do ..---..-.-- ASL: chemi 
2K eee Olea seh Abi ee dolsscceeusese Sept. 18'|,-/:do...-..----- ga Eevee aba 
