274 



Prof. C. Cbilton on 



the maxillipeJs would be found in tlie male on\y, and was 

 piobaMv to be looked upon as a secondaiy sexual character. 

 On Dc^ccmber 12tli, lOlG, I received from Mr. C. R. Gow, 

 of the Moko Hinou Lighthouse, a small collection of Crus- 

 tacea which had been taken between tide-marks on Moko 

 Hinou, a group of islands ofiE tiie east coast of Auckland, 

 situated about 50 miles from Cuvier Island, where the type- 

 specimen was obtained. Among these Crustacea there are 

 lortunately a few sj)ecimens of IlyaJe grenfelH. Most of 

 these are males, showing the peculiar characters in the 

 maxillipeds and the second gnathopod as described. One 



Fig. 1. 



Hyale grenfelli, $ . Maxillipeds. 



specimen is a female, 5 mm. long, bearing five large eggs in 

 the brood-pouch, and I am therefore now able to describe the 

 characters of the female. In it the maxillipeds (fig. 1), 

 though, perhaps, a little larger than in the majority of the 

 species of Hyale, have the terminal joints oidy slightly 

 enlarged, and not showing the special form nor the numerous 

 long seta3 characteristic of the male ; the carpus bears one 

 long seta at its outer distal angle and a few on the inner 

 margin near the distal angle, but there are none on the 

 surface of the joint itself ; in the propod the inner margin 



