666 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



Localities. — Cliignik Bay; 7-18 fathoms; sand; W. H. Dall; 

 U.S.N.M. 43092; 10 females. 



Albatross station 2884; off Oregon, lat. 45° 55' N.; long. 124° 2' W.; 

 29 fathoms; bottom temperature, 50.2° F.; U.S.N.M. 43091 ; 2 females. 



Fig. 90.— Diasttlopsis dawsoni, male, from the side. 



Albatross station 4442; Monterey Bay, California; 26-31 fathoms; 

 U.S.N.M. 43093; 4, male and female. 



Albatross station 4564; Monterey Bay, Cahfornia; 9-10 fathoms; 

 U.S.N.M. 43094; 1 female. 



DIASTYLOPSIS (?) RESIMA (Kri<yer). 



Cuma resima Kr0yer, Naturh. Tidsskr., ser. 2, vol. 2, 1846, p. 165, pi. 2, figs. 2a-b. 

 Diastylopsis resima G. 0. Sars, Crust. Norway, vol. 3, 1900, p. 65, pi. 47. 



Sars quotes Verrill as authority for the occurrence of this species 

 on the Atlantic coast of North America, but I have not been able 

 to find the record to which he refers. The species occurs on the coast 

 of South Greenland (Kr0yer). As Zimmer points out,^ the relation- 

 ship of this species to Diastylopsis dawsoni is by no means close, and 

 it is doubtful whether the definition of the genus can be stretched to 

 include it along with some of the other species that have been regarded 

 as congeneric. 



Locality .—Albatross station 2497; off Nova Scotia, lat. 45° 04' 00" 

 N.; long. 59° 36' 45" W.; 57 fathoms; bottom temperature, 33° F.; 

 U.S.N.M. 44057; 6 females. 



OXYUROSTYLIS, new genus. 



Resembling Diastylis in general characters, but with the telson 

 tapering to an acute point and without apical spines. The carapace 

 is not elongated and has no antennal notch. The lateral portions of 

 the tliird and fourth free thoracic somites are not greatly produced 

 backwards and there is no interval between the second and tliird 

 pairs of legs. The antennule has a brush of hairs in the male. The 

 penultimate segment of the antenna is enlarged in the female. The 

 tliird maxiUiped has an exopod in both sexes. The third and fourth 

 pairs of legs have exopods, vestigial in the female but well developed 

 in the male. The male has two pairs of biramous pleopods. 



1 Cumaceen, Deutsch. Tiefsee Exped., 1908, p. 184. 



