62 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



bined ; lateral lobes rather prominent ; eye small and dark. Antenna i 

 considerably longer than antenna 2; first peduncular joint shorter 

 than second; third joint about one-third as long as second; flagellum 

 longer than peduncle and composed of about 30 joints; accessory 

 flagellum of 7 joints. Antenna 2, third peduncular joint about two- 

 thirds as long as fourth, which is about one-third longer than the fifth ; 

 flagellum a little longer than the fifth peduncular joint and composed 

 of about 9 joints. 



Mandible, cutting edge narrow ; accessory plate bearing distal 

 teeth ; 2 teeth in spine row followed by a few plumose setules ; molar 

 strong with its base produced into a blunt process ; palp long, third 

 joint about three-fourths as long as the second, very setose, and armed 

 distally with many long and short spines, a few of the short ones 

 being pectinate. Lower lip with large inner lobes and short blunt 

 mandibular processes. Maxilla i, inner plate short with only a few 

 marginal setules; outer plate armed with 10 or 11 spine teeth; palp 

 large, expanded distally, its obliquely truncate end armed on the 

 inside with 11 spines and on the outside with 12. Maxilla 2, outer 

 plate longer than inner, both expanded distally and armed with long 

 and short spinules. Maxilliped, inner lobe reaching to middle of outer 

 lobe and armed on the rounding distal end with a few slender spines 

 but no spine teeth; outer lobe reaching nearly to end of second joint 

 of palp, inner margin armed with slender spine teeth ; palp with 

 second joint expanded in the middle; third joint short; fourth joint 

 small and slender and bearing a sharp slender nail. 



Gnathopod i, fifth joint a little longer and wider than sixth; sixth 

 joint with short transverse palm which is greatly overlapped by the 

 seventh joint. Gnathopod 2 longer and stouter than i ; fifth joint 

 longer and wider than sixth; sixth joint with short transverse palm 

 defined by a stout spine ; seventh joint considerably overlapping palm 

 and armed on inner margin with a few short spinules and setules. 

 Both gnathopods very setose or hairy. Peraeopods i and 2 subequal 

 in length with proportions as shown by figure 18, a. Peraeopods 3 to 5 

 much alike and increasing consecutively in length. The armature of 

 peraeopods 3 to 5 as shown for peraeopods 4 (fig. 18, h). 



Lower posterior margin of metasome segment 3 evenly and bluntly 

 rounding (fig. 18, /). Uropods i and 2 extending back the same dis- 

 tance and both armed with long slender spines. Uropod 3 extending 

 back a little farther than uropod 2 ; outer ramus longer than inner, 

 both rami bearing rows of long slender spines, and outer ramus 

 carrying also a group of long apical spines which are characteristic of 

 this species; the peduncle when viewed from above shows an inner 



