CALIFORNIA STALK-EYED CRUSTACEA. 35 



to deep water; the typical longipes ranges from 27 

 fathoms in the north to 456 in the south. Variations 

 exist in specimens from the same locality; for example: 

 The broad forms may possess a hepatic spine or a 

 tubercle; the antennal joints are narrow in some indi- 

 viduals and wide in others. Occasional specimens of 

 the narrow form have a sharp hepatic spine. * * * The 

 width of the typical form ranges from 0.71 to 0.8 of its 

 length; of the wider form from 0.82 to 0.9 of its length; 

 the length being measured from between the bases of 

 the cornua." 



Genus Pelia Bell. 



Carapace subpyriform. Rostrum composed of two divergent spines 

 which are united at the base. Orbits small, with a lateral aspect and with 

 a superior and an inferior marginal hiatus; the upper orbital margin 

 smooth and devoid of a preorbital spine. Eyes small, with slender pedun- 

 cles. Basal antennal joint elongated, its distal portion visible from above 

 at the sides of the rostrum; flagellum well developed. Merus of the max- 

 illipeds with a notch at the articulation of the palp, legs of moderate 

 length; first ambiUatory legs much longer than the others; merus com- 

 pressed, acute above, dactyls not denticulated below. 



Type. P. pulchella BELL. 



Near Pisoides, but having a narrower basal antennal 

 joint, the distal end of which is visible from above. 

 Differs from Pisa in the absence of spines on the under 

 side of the dactyls. 



Pelia tumida (Lock.) 



Pisoides' (?) tumidus LOCKINGTON, Proc. Cal. Acad. Sci., Vol. VII, 1877, pp. 



30 and 67. 

 Microphrys tumidus MIERS, Challenger Reports, Vol. XVII, 1886, p. 83. 



Carapace pyriform, rounded, tumid, covered with pubescence, but en- 

 tirely devoid of spines. Median region rounded, smooth, much elevated, 

 and furnished with a small ixmnded tubercle at the summit; branchial 

 regions inflated; cardiac region with a small rounded elevation. Rostrum 

 depressed, nearly one-half the length of the carapace and bifurcated for 



