53(3 PROCEEDINGS' OF THE NATIONAL MUSEUM. vol. xxxv. 



very broad and armed distally with numerous spines; palp two- 

 jointed, with widely expanded second joint. Maxillipeds with well- 

 developed inner and outer plates, the latter widely separated and 

 diverging distally; palp four-jointed and directed obliquely. First 

 and second gnathopods simple or subchelate. Last pair of peraeopods 

 with a straight, elongated dactyl. Uropods biramous, with flattened, 

 mostly lanceolate, rami. Telson short, entire or notched. 



Genus STILIPES," new. 



Antennae with short peduncle and well developed flagellum. 

 Mandibles with broad cutting edge. Second maxillae with broad 

 rounded setose lobes. Maxillipeds devoid of prominent spines, 

 joints of palp narrow, the terminal one unguiform. Anterior pairs 

 of side plates large; the first three diminishing in width but subequal 

 in length ; fourth pair shorter than the third and more or less pointed 

 below. Gnathopods moderately developed; carpus large; hands 

 rather small, simple or more or less subchelate. First two pairs of 

 peraeopods subequal, with short, curved dactyls. Fourth peraeopods 

 with an elongated propodus and short styliform dactyl. Last perae- 

 opods with the propodus relatively shorter and with the dact}d much 

 larger. Rami of terminal uropods broader than in the others. Tel- 

 son short and apically emarginate.. 



Type. — S. dixit nit a. new species. 



STILIPES DISTINCTA, new species. 



Eyes absent, or at least not visible in alcoholic specimen. Rostrum 

 short. First antenna' with very short peduncle; flagellum rather 

 stout with the joints on the proximal portion furnished below with 

 numerous setae, which decrease in length and in number toward the 

 more distal joints. Second antennae with the peduncle short, but 

 much longer than in the first pair, and having its last joint a half 

 longer than the preceding; flagellum nearly reaching the middle 

 of the body and furnished only with very minute setae. 



Mandibles stout, with broad cutting edge which is smooth on the 

 right mandible but furnished with numerous regular, sharp, up- 

 turned teeth on the left; molar not evident; third joint of pal]) about 

 half the length of the second. Lower lip with widely separated 

 acute lobes, and the posterior angles produced into a narrow acute 

 lobe. First maxillae with the inner plate narrow and furnished with 

 seta' only around the distal end; the broad distal end of the outer 

 plate is armed with about twenty-five uniform smooth spines which 

 are curved at the distal end; the broadly expanded terminal joint of 

 the palp is furnished on the distal margin with low, blunt teeth, 



" From the Latin words stilus, style, and pes, foot. 



