CALIFORNIA STALK-EYED CRUSTACEA. 211 



close together, large, aud hook-shaped, but not broad. The feet of the 

 third pair are rather short, not reaching the extremity of the rostrum; they 

 terminate in well-formed, subcheliform hands. 



'' Found at Monterey, Calif., by A. S. Taylor, Esq." 

 Pandalus franciscorum Kingsley. 



Pandalus franciscorum Kingsley, Proc. Acad. Nat. Sci. Phila., 1878, p. 

 94; Bull. Essex Inst., Vol. X, 1878, p. 63. 



*" Carapax with a minute pubescence ; antennal and branchiostegal 

 spines acute; rostrum a fifth longer than the carapax, extending a fourth 

 its length beyond the antennal scales, considerably recurved, ten or eleven 

 teeth above, of which five are on the carapax and the remainder on the 

 basal portion of the rostrum; distal half of the rostrum above smooth, the 

 -apex being minutely bitid or tritid; below with seven to nine teeth, the 

 posterior being the largest. Third joint of the antennular peduncle a 

 third longer than the preceding; flagella about as long as the carapax. 

 Basal joint of the antennfB with a spine on the outside and another below; 

 antennal scale long and proportionately narrower than in P. borealis 

 Kroyer; flagellum longer than the body. External maxillipeds falling 

 short of the extremity of the antennal scale. Second pair of feet unequal, 

 the shorter extending further forwards than the external maxillipeds. 

 Posterior pairs stout, armed with spines below. Fifth and sixth abdomi- 

 nal segments with a spine at the infero-posterior angle. Telson narrow, a 

 shallow furrow on its upper surface, apex obtusely triangular. 

 " Length, 110 mm.; carapax, 52 mm. 



'' San Francisco, Calif., W. G. W. Harford." 

 Family ATYID^. 



Mandibles stout and divided, but not deeply so, and devoid of a palp. 

 First two pairs of pereopods chelate, the tips of the fingers furnished with 

 hairs. Kostrum variable. Fresh water forms. 



Syncaris, gen. nov. 



Carapace not carinated in front and armed with supraorbital and anten- 

 nal spines. Kostrum long and slender, armed with teeth on one or both 

 sides, and rounded above at the base. Antennules biflagellate, the outer 

 flagellum with a thickened basal portion. External maxillipeds furnished 

 with an exognath. Two or more pairs of pereopods furnished with exo- 

 pods. First pair of chelipeds short and rather stout; carpus short and 



