ISOPODS OF NORTH AMERICA. 



425 



nun. wide. The inner branch i.s 1 nun. long. The outer branch is 

 narrower and slightly shorter than the inner branch. 



FIG. 479. ASELLVS BREVICAUDA. a, FIRST LEG. X 27}. >>, UROPOD. X 15}. C, PALP OF MANDIBLE. 



x 27}. d, MAXILLIPED. x 27}. 



The first pair of legs are strongly prehensile, with the propodus 

 greatly dilated and the inferior margin produced into two spines. All 

 the other legs are ambulatory. 



ASELLUS HOPPING Faxon. 



Asellm hoppime FAXON in GARMAN, Bull. Mus. Comp. Zool., XVII, No. 6, 1888-89, 

 p. 225-239. 



FIG. 480. ASELLUS 

 HOPPIN.E (AFTER 

 FAXON), x 4. 



FIG. 481. ASELLUS HOPPING, a, PEDUNCLE OF SECOND 

 ANTENNA, x 15}. b, ABDOMEN WITH UROPODA. x 9f. 

 c, FIRST LEG. x 15}. 



'Locality. Day's Cave, Missouri, in mud under stones. 

 Body oblong-ovate, a little more than twice as long as wide, 4 mm. : 

 mm. 



