South African Cnistacea. 455 



proportion of breadth to length of carapace is there given as 1 : 1'38, 

 no doubt including in the length the divergent horns. lu our 

 specimen the breadth is rather less than 7 mm., with a length, not 

 including the horns, somewhat over 8 mm. The eyes are light orange, 

 not black, as in Stimpson's species. In place of the five teeth on the 

 branchial region there are here a convex row of five little nodules. 

 The ambulatory limbs have each a thin blade-like carina on the fourth 

 joint, not toothed as in Stimpsou's species. This transparent carina 

 differs much from the rugosity found in other species of the genus. 

 I have figured both mandibles to show that they are not absolutely 

 alike, one having a projecting tooth, which is wanting in the other. 



Locality. Cape Vidal, N.N.E. ^ N. 95 miles, Zululand ; depth 

 80 fathoms, whence the specimen was obtained by s.s. " Pieter Faure." 

 A 1610. 



FAMILY PARTHENOPLDAE. 

 GEN. PLATYLAMBRUS, Stimpson, 1871. 



PLATYLAMBRUS QUEMVIS, Stebbing. 

 (See Ann. Durban Mus., vol. 2, pt, 1, p. 5, pi. 1 ; 1917.) 



A specimen somewhat larger than that previously described has a 

 wider trilobed pleon, presumably due to a more advanced age. It 

 was taken in Natal waters, Tongaat River, N.W. by N. J N. 5^ miles ; 

 depth 30 fathoms. A 384. 



TRIBE CYCLOMETOPA. 

 FAMILY XANTHIDAE. 



GEN. ACTAEA, de Haau, 1833. 



(See these Annals, vol. 6, pt. 4, p. 298 ; 1910.) 



ACTAEA HIRSUTISSIMTJS (Riippell). 



1830. Xantho hirsutissimus, Riippell, 24 Krabben roth. Meeres, p. 26, 



pi. 5, fig. 6, pi. 6, fig. 21. 



1833. Cancer (Actaea) hirsutissimus, de Haan, Crust. Japon., decas 1, 



p. 18. 



