CALIFORNIA STALK-EYED CRUSTACEA. 63 



prominent, but in some specimens it is quite inconspic- 

 uous. The crests on the ambulatory legs are also quite 

 variable, and the tooth at the end of the sharp upper 

 edge of the merus may be absent. These differences 

 are probably due, in great measure, to age. 



The forms from near Japan which Miers identified 

 with this species under the name Lophozozyraus (Lopho- 

 xanthus) hellus St. var. leucomanus Lock, belong, I 

 believe, to a distinct species. The lateral teeth in 

 Miers' form are quite different from leucomianus; the 

 hands, as shown in Miers' figure, lack the lobe at the 

 base of the palm; 'Hhe mobile finger is longitudinally 

 carinated and sulcated above," while in leucomanus it is 

 rounded and perfectly smooth; the pits on the upper 

 side of the hand are arranged in longitudinal series, 

 but in leucomanus this arrangement is not shown. ^ 



The types of leucor)ianus are probably no longer pre- 

 served. I have specimens from localities from which 

 this species was reported by Lockington, and I have 

 seen Lockington's specimens from La Paz, Lower Cali- 

 fornia.^ These specimens are small and strongly eroded, 

 but present no well-marked differences from the north- 

 ern forms. 



None of the specimens of leucomanus I have seen 

 attain nearly the size reached by hellus. 



1 See Challenger Reps., Vol. XVn, p. 115, PL XI, fig. 1. 



2 See Proc. Cal. Acad. Sci,, Vol. VII, 1877, p. 100. 



