60 Annals of the South African Museum. 



larly placed dozen of minute ones at the base. A comparison 

 of the figures for the two species will show rather considerable 

 differences of detail in the maxillae and other maxillipeds. But 

 without more specimens for control it may be imprudent to 

 lay too much stress on such details. 



A detached first peraeopod, beginning with the third joint, and 

 measuring 23 mrc. in length, agrees well with Alcock's account 

 of the large chelipeds in the female, having the hand as long 

 as the fourth and fifth joints combined (carpus and merus 

 being evidently intended, in agreement with the figure, not 

 "carpus and ischium" as printed), the fifth joint is two-thirds 

 the length of the palm, and the palm is as long as the fingers; 

 there is a terminal tooth on the lower border of the third 

 joint and on the upper border of the fourth joint and the 

 palm. In the second peraeopods the last three joints measure 

 together 6 - 5 mm., equally divided between the wrist, palm, 

 and fingers, while the fourth joint, 7'5 mm. long, exceeds the 

 whole combination. The three following peraeopods appear 

 to have a total length respectively of 25, 24, 21 mm., the 

 apical part of the sixth joint in all, but especially in the fifth 

 pair, and the fingers being copiously furnished with setae. 



The pleopods are perplexing. A comparison of the figures 

 will show that the first pair in this species differs from that of 

 C. barnardi. The second pair of the present species would, I 

 imagine, apart from contradictory evidence, be regarded as 

 male organs. But Alcock is evidently describing these organs 

 when he writes : "In the female the protopodite and endopo- 

 dite of the second pair of abdominal appendages are long and 

 rigid, and articulated to the tip of the endopodite is a large 

 boot-shaped plate, its toe pointing backwards and its heel 

 armed with a spine." The sole, it will be seen, is fringed 

 with spinules. In describing the family Axiidae Alcock says : 

 " In the Indian species from the deep sea it is common to find 

 orifices, corresponding with the genital orifices of the male, in 

 adult females." In defining the genus Calocaris he says : 

 " The first pair of abdominal appendages are slender and 

 uniramous in both sexes, the 2nd-5th pairs are slender and 

 biramous, and have a slender styliform internal appendix." 

 This appendix I have sought in vain in the present species. 

 The characters of the telson and uropods are sufficiently 

 shown in the figures, the diaeresis in the exopod of the latter 

 incomplete. 



