354 A. E. Verrill — North American CepJialopods. 



W. Long. 59°, in 60 fathoms; another from 7 fathoms, off Miquelon I., 

 (lot 372), M^as presented by Capt. C. D. Murphey and crew, of the 

 schooner "Alice M. Williams." Its relatively large eggs (PI. XXVII, 

 fig. 9) are laid in Angust 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 Bairclii Y., 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. 



■RoSSia SUblevis Verrill. 



Rossia suhlevis Verrill, Amer. Jour. Sci., vol. xvi, p. 209, 1878. 

 Tryon, Man. Conch., i, p. 160, 1879. (Description compiled from preceding.) 

 Verrill, Amer. Journ. 8ci., xix, p. 291, pi. 15, %. 3, Apr., 1880: Bulletin Mus. 

 Comp. Zool., viii, p. 104, pi. 3, figs. 2-4: pi. 7, fig. 4, 1881. 



Plate XXX, figure 2, $ . Plate XXXT, figure 3, $ . Plate XLVI, figure 4. 

 Plate XLVII, figures 2-3, ? , figure 4, $ . 



Larger and relatively stouter than Rossia Hyatti., with the fins 

 larger and placed farther forward, the rounded front edge of the large 

 free lobe reaching nearly to the edge of the mantle. Head large 

 and broad. Eyes very large. 



Sessile arms more slender and less unequal in size than in the 

 preceding species, and with the suckers arranged in two regular rows 

 throughout the whole length. Anterior edge of the mantle scarcely 

 sinuous, advancing but little dorsally. Upper surface of the body 

 and head neai'ly smooth, but in the larger specimens, especially 

 the males, usually with a few very small whitish papillie, most 

 numerous near the front edge of the mantle. Color, nearly as in the 

 preceding species. 



The pen (Plate XLVI, figure 4) is small and thin, much shorter 

 than the mantle. The shaft is narrow ; the blade is rather abruptly 

 wider and rather shorter than the shaft ; its posterior portion is very 

 thin, with the edge ill-defined. 



The males, when adult, can be easily distinguished from the 

 females, by the larger size of the suckers along the middle of the two 

 lateral pairs of arms (Plate XLVII, figure 4), and, to a less extent, 

 of the ventral pair. These large suckers are oblong, with a groove 

 or constriction around the middle, the part below the groove larger 



