Schizopod Crustaceans 



7b 



antero-lateral angle of the frontal plate and a median one which is slightly 

 behind the line connecting the anterior margins of the lateral convexities; 

 dorsally the frontal plate is slightly grooved or depressed between the median 

 and lateral lobes. 



The eyes are short and stout, as in N. franciscana and likewise reach the 

 distal segment of the antennular peduncle, which, unlike that species, is nearly 

 one-half and not only one-third as long as the antennal scale. The distal seg- 

 ment of the antennular peduncle is about, or a little more than, twice as long 

 as the second and about two-thirds as long as the first. The antennal peduncle 

 reaches about as far forward as the eyes. The antennal scale is about twelve 

 tirnes as long as wide at the widest part; the terminal portion beyond the 

 suture is contained about six and one-half times in the total length of the scale. 



Fig. 2. — Neomy^sis andersoni, fourth pleopod, X about 15 



Fourth pleopod of male similar to that of N. americana (Smith) (Rept. 

 U.S. Fish Comm., I, 552, 1873), ultimate segment of outer ramus little more 

 than half the length of the curved terminal stylets, penultimate segment be- 

 tween five and one-half and six times as .long as the ultimate (instead of four 

 or five times, as in N. americana). 



This species is most closely related to N. americana. But the telson is 

 relatively not so broad, tapering less abruptly toward the tip, and the smaller 

 spines are more numerous in the interspaces between the larger spines, at least 



-"J piQ 3 Dorsal view of termmal millimeter and a half of telson of: o, Neomysis andersoni 



juvenile; 6^, N. andersoni adult 9; c. N. americana 9 ; d, N. rayi, 9; e,N. kadiakensis, cf ; all 

 X about 30, (last three added for purposes of comparison.) 



