634 



PROCEEDINGS OF THE NATIONAL MUSElUJ. 



roL. 41. 



Fig. 38.— Par A- 



LAMPROPS OR- 

 BICULARIS, IM- 

 MATURE FE- 

 MALE, FIFTH 

 LEG. 



specimens now described show, however, that the species can not 

 belong to that genus, since it has well-developed exopods on the sec- 

 ond pair of legs and vestigial exopods on the third and 

 fourth pairs in the female sex. In these and in many 

 otlier respects it agrees much more closely with the type 

 of the genus Paralamprops (P. serratocostata) described 

 by Sars from Kerguelen, I have, therefore, placed it 

 for the present in that genus, although it differs in one 

 character so important and unexpected that it might 

 almost justify the creation of a new genus. This char- 

 acter is the possession of a normal maxillular palp. The only Cumacea 

 in which this palp is lacking are Platyaspis typica and Paralamprops 

 serratocostata, and this common character has been used by Zimmer 

 as an argument against the separation of the Platyaspidse from the 

 LampropidaB. In other respects, however, the case against this sepa- 

 ration is strengthened by the characters of the species 

 described above, which unites the greatly expanded 

 carapace of Platyaspis with, the arrangement of exo- 

 pods characteristic of Paralamprops. 



Localities.— Albatross station 2547; lat. 39° 54' 30'' 

 N.; long. 70° 20' 00" W.; 390 fathoms; bottom tem- 

 perature, 39.6° F.; U.S.N.M. 38210. 



Albatross station 2680; lat. 39° 50' 00" N.; long. 

 70° 26' 00" W.; 555 fathoms; U.S.N.M. 44148. 



U. S. F. C. station 891; lat. 39° 46' 00" N.; long. 

 71° 10' 00" W.; 480 (?) fathoms; U.S.N.M. 34306. 



U. S. F..C. station 997; lat. 39° 42' 00" N.; long. 

 71° 32' 00" W.; 335 fathoms; bottom temperature, 

 40° F.; U.S.N.M. 34304. 



DIASTYLIS SCORPIOIDES (Lepechin). 



Oniscus scorpioides Lepechin, Acta Acad. Sci. Petropol., 1778, 

 pt. 1 (1780), p. 248, pi. 8, fig. 2. 



Diastylis scorpioides G. 0. Sars, Crust. Norway, vol. 3, 1900, 

 p. 58, pi. 44. 



This species was found by Stuxberg on the voyage 

 of the Vega as far east as the Liakhov Islands.^ 



Localities. — Upernavik Harbor, Greenland; 13 fathoms; Ensign C.S 

 McClain, U. S. S. Alert, June 14, 1884; U.S.N.M. 13769; 1 female. 



Greenland ( ?) ; Ensign C. S. McClain, U. S. S. Alert, 1884; U.S.N.M, 

 14766; 1 female. 



Fig. 39.— Par.vlam- 

 props orbicula- 

 ris, immature 

 female, last so- 

 mite, telson, 

 and uropod. 



1 Bihang Kgl. Svenska Vet. Akad. Handl., vol. 5, ISSO, No. 22, p. 2G, and 1 'ega Exped. Vetensk. lakttag- 

 elser, vol. 1, 1882, p. 710, as D. edwardsi. 



