142 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 18 



short, transversely and longitudinally convex proximal portion; widest 

 portion at base of broad, flattened fingers; carpus trigonal with stout 

 acute spine at anteromedial corner, surface covered with distinct, pointed, 

 forward curved granules; merus trigonal, only slightly overreaching 

 eyes, lower anterolateral corner with stout spine. 



Minor cheliped very small, less than one-half width of right; lateral 

 margin of palm a slight, finely denticulate ridge; fingers gaping at base, 

 with fascicles of setae on outer edges; carpus crested with many sharp 

 spines. 



Precervical portion of carapace smooth, polished, slightly longer than 

 wide, median point narrow, acute, twice as long as width of base ; lateral 

 projections rounded, reaching only slightly beyond base of median point ; 

 postcervical portion not calcified, posterior border with slight rounded 

 indentation. 



Eyestalks short, stout, compressed; corneas dilated; eye scales tri- 

 angular, longitudinally convex, apices slightly rounded, furnished with 

 stout, acute, subterminal spines which extend beyond apices. 



Antennal acicle slender, smooth-margined, acute, curving outward, 

 slightly shorter than eyes; antennal peduncles when extended approxi- 

 mating length of eyes, flagella slightly setose and not overreaching major 

 cheliped ; antennular peduncles exceeding length of eyes by one half 

 length of terminal article, ventral flagellum three fourths as long as 

 dorsal flagellum. 



Pereiopods of left side as long as right, reaching base of fingers of 

 major hand ; carpus and propodus crested with forward-hooked, pointed 

 spines ; dactyl spinulose, slightly longer than propodus, and tipped with 

 sharp corneous claw. 



Fourth pair of thoracic legs subchelate, rasp restricted to distal mar- 

 gin, not developed on outer face of hand; fifth pair minutely chelate, 

 rasp developed on outer surface of propodus and fingers. 



Abdomen straight, membranous, slightly longer than thorax, terga 

 not present except in poorly calcified caudal shield. 



Telson symmetrical, rather poorly calcified, smooth, outline almost a 

 half-circle except for prominent notch in terminal margin, a strong, 

 downward curving, flattened tooth at each end of notch, setae and 

 smaller denticles along sides toward apex; uropodal peduncles short, 

 heavy, anterior pair of blades over twice length of posterior pair, both 

 sparsely setose along anterior and posterior margins. 



Distribution: From Santa Catalina Island and San Pedro to San 

 Diego, California, 10 to 30 fathoms. (Schmitt 1921). 



