V. \ [V 



" i than in m> specimen, but I il<> aol think thai these differences are oi 



third ra 1 ■ an see foui teeth on the merus and, I think, three on the 



numbei oi teeth agrees completelj with m) description, 



mentioned have a highei number oi such teeth than in any othei specii icon 



ml are, besides, unusualh robusl 1 1 l- observed y strong teeth <>n second 



■ l ound 6 in an immature male the difference is of no importano in nrj adult specimen 



irioush week aspect, was perhaps n«>t quite normal, and therefore the low numbei of ; 



the lowei side oi second joinl is no1 improbably a casual anomah Caiman's sketch oi the uropods 



im< difference as to length between exopod and endopod, furthermore thai second joinl ol thi 



endopod is even sUghtly longei in proportion to tirst joinl than in my fig. 6e; a difference as to spines on the 



innei margin of tir-t joinl of the exopod is easilj explained l>y the supposition thai one spine or perhaps 



spines near the middle ol the margin are Inst m Nun nan s type. His specimen was secured rathei neai the 



where my specimens were captured, and judging from the similarity in importanl characters 



I think thai my determination is correct. 



currence. Taken by the "Ingoli a1 two deep-sea stations in the warm art 

 Davis Strait Stat. 24: I. at 63°o6 V. Long. 56°oo' W., [199 lath. temp. 2. 4 ; 1 ovig. female. 



Sta1 [6 I .. 1 1 6i 50 X Long. 56°23 \\\, 1435 lath., temp. [.5 : 2 immature males. 

 The type, the only specimen hitherto recorded, was gathered by the "Valorous" at the entrance of 

 Davis Strait, l.at. 59 ro N Long 50°25' W., [750 lath. (Norman). 



Hi Leucon robustus 11. sp. 

 PI 1. figs. 7 a ;d 



Female (with the marsupium half developed) Rather similar to L.serratus, but showing some 

 sharp differences. Carapace about as deep in proportion to length as in I. serratus, bul the anterioi hall oi 

 the dorsal line 1- less convex; the serration on the dorsal edge is strongly developed, with the usual interrup- 

 tion con before the posterior end. The frontal lobe has a longitudinal row oi ; conspicuous teeth 

 a little above its lower margin. Pseudorostrum feebly upturned, moderately long, tapering to the acute end 

 with the lower margin a little convex and a tew teeth neai tin- end (fig 7b). The antenna! notch 

 i>- deep, angular at tin bottom, with 2 or 3 minute teeth on its upper and 5 teeth on its lower margin; the 

 1 corner then foi consideral ly produced; the lower margin of the carapace with aboul 9 teeth. 

 Tin- tree the gments < < .1 ill lined as long as pace withoul pseudorostrum. Abdomen moderately 

 the whole 1 1 phalothorax. 

 The antennui 7b) are long; the peduncle is -lender in proportion to length, reaching beyond 

 ■ ith third joinl somewhat shorter and considerably more slender than the second; 

 mi 1- slightly shortei than third pedunculai joint; innei Bagellum very short. 

 - with a -in. roximal pari oi the lower side oi second joint; merus with one 

 other minute spine it the outer margin; carpus with _• well-sized distal spines, one 

 margin Firsi paii oi lee robust; second joinl with 3 strong teeth 



