252 IlUnoh State Tjcihordtorii of Natural Histori/. 



4 (8). First segment of right leg entirely unarmed. First 



segment of left leg with comparatively slender process ; 



■ second segment armed at the outer apical angle with a 



small spine. lacii^triH. 



Epischura nordenskioldi Lilljeborg. 



Epischura nordenskioldi, de Guerne et Eichard, *t91), p. 91, PI. 1. 



Fig. 36; PJ. II., Fig. 15,28. 

 Epischura nordenskioldi, Herrick and Turner, "95, ]>. 85, PI. XL, Fig. 



2, 5, 9. 



Epischura nordenskioldi. Solimeil, "98. p. 183. 



About medium size, l)ody rather rolnist, widest in front of 

 middle. Cephalothorax six-segmented, the first two segments 

 confluent and together somewhat longer than the remainder ; 

 third segment slightly longer than either of the last three, 

 which are suhequal ; last two segments distinct, the last 

 segment produced on each side at the posterior angle into 

 a bluntly-rounded lobe armed at the tip with a minute 

 spine. Abdomen (including furca) five-segmented, slender, 

 a little less than half as long as the cephalothorax; first two 

 segments indistinctly confluent below ; third segment slightly 

 longer than the fourth. Furcal rami al)Out twice as long as 

 broad and ciliate on the inner margin ; armed at the apex 

 with three slender plumose seta- fully three times as long as 

 the ramus itself, at the outer apical angle with a short stout 

 spine, and on the dorsal surface, near the inner margin, Avith 

 a delicate smooth seta. Abdomen of male (furca included) 

 six-segmented, the second, third, and fifth segments armed on 

 the right side with prehensile ])rocesses ; flexed to the right but 

 slightly or not at all. First segment somewhat broader than 

 long, slightly i)roduced along the left margin into a process 

 ending at the posterior angle in a lobe-like expansion. Sec- 

 ond segment slightly narrower and longer than the first ; ]n-o- 

 duced on the right side in the form of a subtriangular phite, 

 somewhnt longer than wide and pointing obliquely backward. 

 The process is armed at the tip with a small sharp spine, 

 on the inner margin, near the apex, with two or three rather 

 large teeth, and within these with a number of smaller 



