NO. 1307. 



JAPANESE STALK-EYED CRUSTACEANS— RATHB UN. 



47 



about the anterior sixth of the carapace, anterior spine near the mid- 

 dle of the rostrum; in addition, there is one subterminal immovable 

 spine, occasionally two. Extremit}^ of rostrmii spiniform. Lower 

 limb rather deep in front of the eye, o-radually diminishing anteriorly, 

 armed with 10 to 13 immova))le spines. Antennal spine strong; 

 pterygostomian spine nuich smaller, but well marked. E3^es of mod- 

 erate size, cornete dilated, reddish brown in alcohol. 



Peduncle of antennules reaching about one-third the length of the 

 antennal scale; l)asal scale half as long* as first segment, second seg- 

 ment about one-third longer than third. Outer flagellum reaches to 



Fig. 20. — Pandalus latirostris, carapace, side view, x IJ. 



the end of antennal scale, slender terminal portion two-fifths as long 

 as thickened basal portion; inner flagellum one-half longer than outer. 

 Peduncle of antennte reaching just to the end of the second segment 

 of the antennular peduncle, the scale reaches not quite to the end of the 

 rostrum, the end of the blade is very obliquely rounded and over- 

 reaches considerably the outer spine; the flagellum is as long as the 

 body, exclusive of the telson. 



The outer maxillipeds reach only to the middle of the antennal 

 scale, and are rather stout; the first pair of feet reach to the middle 

 of the last joint of the maxillipeds. Of the second pair, the right 



Fig. 21.— Pandalus latirostris, carapace and antenn*:, dorsal view, x l*. 



foot is stouter and shorter, reaching as far as the first pair; the left 

 foot exceeds the maxilliped by the length of the chela and half the 

 last carpal joint, and exceeds the third pair l)ut little; the fourth and 

 fifth pairs are successivelj'^ shorter than the third, and nearer the same 

 length than the third and fourth; the dactyli are contained a little 

 more than three times in their propodi; the latter are not essentially 

 different in the sexes. 



The abdomen is smooth; the third segment is very little pi'oduced 

 over the fourth. The infero-posterior angle of the fourth, fifth, and 

 sixth segments is armed with a spine. Sixth segment twice as long 

 as wide, and two-thirds as long as the telson, Avhich is armed with 5 



