378 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



voii. 43. 



much beyond that of the fifth segment, its apex rounded; palm sinu- 

 ate, crenuhite, forming a deep sinus just beyond the basal process; 

 finger reacHng basal process of sixth segment, stout, conical, teeth 

 on inner margin prominent. Second gnathopod with fifth segment 

 shorter than sixth, both setose; palm transverse; finger slender, not 

 quite so long as palm. 



Porapopods 1-5, slender, second segment little expanded. 



Uropods 1 and 2 elongate, armed with stout spines on outer mar- 

 gin; inner ramus minute "with one long apical seta. Uropod 3 with 

 ramus longer than peduncle (the figure shows only the ramus). 

 Telson rounded, entire. 



Length, 4.2 mm. 



Seven specimens were taken by the Albatross at stations 2369-2374, 

 between Delta of Mississippi and Cedar Keys; 25 to 27 fathoms. Type- 

 locality, Punta Rassa, Charlotte Harbor; H. Hemphill; 1 specimen. 



Type.— Cut. No. 43639, U.S.N.M. 



ERICTHONIUS RUBRICORNIS (Stimpson). 



Albatross stations 2369-2374, between 

 Delta of Mississippi and Cedar Keys; 25-27 

 fathoms, 1 male; station 2388 (lat. 29° 24' 

 30" N.;long. 88° 01' 00" W.), 35 fathoms; 

 5 males, 12 females. 



Tribe HYPERIIDEA. 

 CYSTISOMA SPINOSUM (J. C. Fabricius). 



Albatross station 2392 (lat. 28° 47' 39" 

 N.; long. 87° 21' 00"), 724 fathoms, 1 

 specimen, 47 mm. long. Agrees with Steb- 

 bing's description except for the fact that 

 the first antennae are very long — 31 mm. 



Fig. 8.— Cystisoma spinosum. p-'; 



FIFTH PER.EOPOD. 



PHRONIMA SEDENTARIA (Forskal). 



Fisli Hawk station 7284, Gulf Stream, 

 off Key West, February 19, 1902, 245 fathoms, 2 specimens; station 

 7299, Gulf Stream, ofT Key West, February 22, 1902, a female carry- 

 ing eggs, 109 fathoms. 



PHROSINA SEMILUNATA Risso. 



Albatross station 2393, between Delta of Mississippi and Cedar 

 Keys, 4 specimens; station 2398, same locality, 1 specimen. 



Tribe CAPRELLIDEA. 

 CAPRELLA GEOMETRICA Say. 



Fisli Hawk station 7292, Gulf of Mexico, off Northwest Channel, 

 lOi fathoms. 



