Contributions to the Crustacean Fauna of South Africa. 365 



Pleopod 3, outer ramus with a distinct though incomplete transverse 

 suture. 



Pleopod 4, 2nd joint of outer ranius with 1 plumose seta on apex. 



Pleopod 5 with the usual squamose patches on outer apex. 



Uropod, outer ramus reaching very little, inner ramus very far, 

 beyond telsonic apex, the former deeply bifid, the latter with the 3 

 little curved teeth on the apex as described by Baker (1908). 



Length: 5 mm. ; breadth: 2'5 mm. 



Colour ; In spirit yellowish. 



Locality : Umhloti River N. by "W. | W., distant 8 miles. 40 fathoms. 

 1 <$ ; Umkomaas Eiver NW. by W. i W., distant 5 miles. 40 fathoms. 

 7?9; Port Shepstone N., distant 8 miles. 36 fathoms. 1 <$ . s.s. 

 "Pieter Faure." 18/12/00, 31/12/00 and 14/3/01. (S.A.M. Nos. 

 A4155-6-7 respectively.) In each case found inhabiting siliceous 

 sponges. 



Geogr. Distribution : Australia (Stebbing : tuberculosa} ; New South 

 Wales, 25-50 fathoms (Whitelegge) ; South Australia, in sponges 

 (Baker : tuberculosa and var. bispinosa) ; Philippine Islands, inside a 

 pearl oyster (Richardson : tripartita). 



From the above description it will be seen that the South African 

 specimens belong to the form described by Miss Richardson as tripar- 

 tita. The similarities are the widely separated processes on pleon 

 segment 4, and the additional tooth on the lower margin of 1st joint 

 of 1st antenna. The fact that in some of the specimens there are 

 indications of 4, though in most cases only of 2, teeth on the epistomial 

 ridge shows the variability of this feature and consequently its unim- 

 portance. With regard to differences, these specimens lack the 2 

 larger granules on the inner ramus of the uropod, the inner ramus and 

 the processes of the 4th pleon segment are considerably longer, and 

 the median lobe of the telson is distinctly separated from the 

 lateral lobes. 



The last three differences might well be ascribed to differences in 

 age ; judging from the figure the Philippine specimens were about 

 3'5 mm. in length, as against 5 mm. in the present examples. A 

 comparison with the figure of tripartita leaves little doubt that the 

 Philippine specimens are merely a younger stage. 



It may be noted that, whereas the figure is labelled " male " and 

 the description corresponds with the figure, it is stated that " two 

 males and two females were collected " without any indication whether 

 the females resembled the males or, if not, in what respects they 

 differed. 



There remains the further question of the relationship of this form 



