10 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 6» 



Subfamily MYSINAE 



Genus KATERYTHROPS Holt and Tattersall 



7. KATERYTHROPS OCEANAE Holt and Tattersall 



Occurrence. — Station 10166, depth 1,100-0 m., 2 males; station 

 10211, depth 500-0 m., 1 immature specimen. 



RemarJcs. — This species has not been recorded previously from the 

 area under notice. 



Genus EUCHAETOMERA G. O. Sars 



8. EUCHAETOMERA TYPICA G. O. Sars 



Occurrence. — Station 10173, depth 200-0 m., 3 specimens; station 

 10187, depth 200-0 m., 1 female. 



Remarlcs. — This widely distributed species has not actually been 

 recorded before from the Bache area, but is known from the more 

 southerly and tropical parts of the Atlantic. 



9. EUCHAETOMERA TENUIS G. O. Sars 



Occurrence 



Remarlcs. — Previously known from this area from the collections 

 made by the Plankton Expedition (Ortmann). 



Genus MYSiDOPSIS, G. O. Sars 



10. MYSIDOPSIS BIGELOWI, new species 



Eolotype.—Csit. No. 59115, U.S.N.M. 



Occurrence. — Station 10157, surface, few immature males and 

 females. 



Description. — Carapace produced between the eyes into a short low 

 triangular rostral plate with a bluntly pointed apex; anterolateral 

 corners rounded. 



Eyes of moderate size, cornea occupying less than half of the whole 

 eye in dorsal view; no fingerlike process on the outer dorsal portion 

 of the eyestalk. 



Antennal scale five times as long as broad, narrowly lanceolate in 

 shape, setose all round, without a distal joint, apex bluntly rounded, 

 extending beyond the peduncle of the antennules by about one- 

 quarter to one-third of its length, a prominent spine on the outer 

 distal corner of the joint from which the scale springs; the distal 

 joint of the antennal peduncle only slightly more than half as long 

 as the preceding joint, the M^hole peduncle extending to about two- 

 thirds of the antennal scale. 



