186 Annals of the South African Museum. 



oval, postero-inferior angle rounded, anterior margin with groups of 

 spinules, posterior margin finely serrulate, 4th longer than 5th, 6th 

 longer than 4th, anterior margin of 6th with 7 groups of 3 unequal 

 spines, hind margin with 6 pairs of spines. 



First and second uropods, outer ramus very slightly shorter in 1st, 

 distinctly shorter in 2nd, peduncle and rami with marginal spines, 

 apices of rami with 5 stout unequal spines. 



Third uropod, the distal half of the rami projecting beyond the end 

 of 1st and 2nd uropods, rami subequal, nearly twice length of peduncle, 

 lanceolate, apically acute, margins closely serrate, spinulose and setose, 

 outer margin of the outer ramus with less numerous (only ca. 9) and 

 more widely spaced serrations, with stout spines in the notches ; in the 

 young the rami are scarcely 1 times length of peduncle, and the 

 margins are smooth with only a few marginal spinules (as in Stebbing's 

 figure of Atyloides assimilis, Challeng. Rep. vol. 29, pi. 77). 

 Length: $ up to 15 mm., ovigerous ? ? from 5-12 mm. 

 Colour : Whitish with crimson markings, these either few in number, 

 pale and irregularly scattered, or forming bauds on the anterior 

 peraeon segments, or a median dorsal stripe, sometimes so numerous 

 as to cover the whole body with a complete network ; sometimes 

 uniform pale crimson-red ; eyes dark maroon. 



Locality: Table Bay (Sea Point, near Cape Town). Dr. W. F. 

 Purcell, Dr. J. D. F. Gilchrist, K.H.B.) ; Dassen Island, West Coast 

 (E. M. Lightfoot) ; Hout Bay, Cape Peninsula (K.H.B.) ; False Bay 

 (Buffels Bay and St. James, K.H.B.) ; East London (R. M. Light- 

 foot) ; Port Elizabeth (W. F. FitzSimons and Mrs. Paterson). ^ , 

 ovigerous ? ? and young. (S.A.M. Nos. 1282, A2798, A2910, A2923, 

 A2866, A2531, A2915, A2914, and A3034.) 



Geogr. Distribution : Cape of Good Hope (Dana) ; off Cape of Good 

 Hope (Stebbing- A. assimilis} ; Straits of Magellan, 55 fathoms 

 (Stebbiug : A. magellanica) ; Auckland Islands and South Orkneys 

 (Chilton: A. magellanica); South Africa, 25 fathoms (Chilton: P. 

 austrina var.) ; Falkland Islands (Stebbing : A. mayellanicus). If 

 P. austrina and megalophthalma be included under capensis, the 

 disti'ibution will extend to Australia, New Zealand and the Sub- 

 antarctic Islands, Kerguelen, South Georgia', etc. 



FAMILY GAMMARIDAE. 



1813/14. Gannnaridae (part) Leach, Edinb. Encycl. vol. 7, p. 432. 

 1906. Stebbing, Das Tierreich, 21, pp. 364, 729 



(references). 



