CALIFORNIA STALK-EYED CRUSTACEA. 207 



the autepeDiiltimate joiut. First pair of clielipeds not reaching the middle 

 of the antennal scale; hand oblong, thick, the tips of the fingers hooked. 

 Posterior legs stout, setose; dactyls about half the length of the propodi. 

 Abdomen short, contracted behind the fifth segment; all the segments are 

 rounded above but the third is produced backwards in the middle into a 

 rounded, triangular process; the postero-lateral angles of the fourth and 

 fifth segments are produced into an acute tooth. Telson flat above vi^here 

 it is armed with four pairs of spinules; tip armed with two pairs of spines 

 (the inner pair being the longer) and a short, median spine or tooth. 



Puget Sound (Stimpson); Marmot Isles, Alaska 

 (Sharp); Monterey! 



Spirontocaris bispinosus, sp. nov. 



Carapace with two supraorbital spines, a triangular, tooth on the margin 

 beloW'the orbit, and a short distance below this a spine behind the base 

 of the antenna; antero-inferior angle of the carapace with an obsolescent 

 sj)inule. Kostrum a little longer than the carapace, strongly upturned, 

 with the basal half high and laminate., but abruptly contracted near the 

 middle into a slender, styliform process; the rostrum is continued back- 

 ward over the anterior two-thirds of the carapace as a carina; the upper 

 margin is armed with 10-12 teeth which decrease in size and become more 

 closely set anteriorly, there being several small teeth crowded together 

 where the rostrum is abruptly narrowed, the two posterior teeth on the 

 carapace; distal half of the upper margin devoid of teeth; lower margin 

 armed with three or four low teeth on the basal half and a single tooth on 

 the slender process. Eyes pyriform with very large corner. Basal spine 

 of the antennules reaching the middle of the second joint of the peduncle. 

 Antennge much longer than the body; acicle not nearly reaching the tip of 

 the rostrum; peduncle reaching middle of acicle. Mandibles with a slen- 

 der apical process; palp two-jointed, subequal to the apical process, the 

 first joint broad; second joint narrow, about twice as long as the first. 

 Maxillipeds not quite reaching the tip of the acicle; exognath slender, not 

 nearly reaching the tip of the antepenultimate joint. First chelipeds 

 rather slender, nearly reaching the tip of the antennal peduncle; carpus 

 not distally excavated and longer than the palm of the narrow elongated 

 hand. Second chelipeds exceeding the acicle, carpus seven-jointed, third 

 joint longer than the first two. Posterior legs long and slender, merus 

 armed externally with spines, dactyls very slender. All the abdominal 

 segments are rounded above. Telson rounded above and armed with 

 three pairs of dorsal spines. 



Puget Sound, June, 1898, five specimens. Collection 

 University of California. 



