382 Annals of the South African Museum. 



outer ramus subequal in size, ovate, apically rounded ; in ? similar 

 in shape but not quite reaching telsonic apex. 



Length: 3 15mm., 5 12mm.; breadth: $ 7'5 mm., 2 6mm. 



Colour : Brown, inclining to orange on the margins of the seg- 

 ments, with the front of head, epistome, posterior margin of 4th 

 pleon segment, whole of telson and uropods white with very faint 

 tinge of grey due to minute pigment specks ; one specimen wholly 

 white, only lst-4th pleon segments brown. 



Locality: Sea Point, near Cape Town. 14/12/13. (K.H.B.) 

 $ $ , ovigerous ? and juv. (S.A.M. No. A2651.) Low-tide, under 

 stones. 



EXOSPHAEEOMA POKRECTUM, n. Sp. 



(Plate XXXII. E.) 



Body nearly parallel-sided, slightly wider across the posterior 

 peraeon segments than across the anterior ones, glabrous. 



Head with two small angular projections on antero-lateral 

 margins and a median tubercle on frontal margin, dorsal surface 

 with 4 transverse rows of tubercles respectively 2, 4, 3 and 3 in 

 number, the last row being on the posterior margin of head ; eyes 

 large, black. 



Peraeon with 1st segment twice as long as the others, which 

 are subequal, two transverse rows of tubercles on 1st segment, 

 the anterior one composed of 5, the posterior one of 7 blunt 

 tubercles (2 and 3 respectively on either side of a median one) ; 

 2nd and 3rd segments each with a single row of 7 tubercles ; 

 4th-6th segments each with a single row of 6 tubercles, the 

 median one being absent ; 7th segment narrower than 6th with 

 4 tubercles and a small indentation on posterior margin at the 

 junction of the epimeron with dorsum ; junctions between lst-6th 

 epimera and their segments nodular, 2nd-5th epimera bent down- 

 wards at right angles, distant from one another and slightly 

 excavated in front of a low oblique ridge ; bases of epimera inter- 

 locking ventrally. 



Pleon longer than peraeon, 4th segment with 2 submedian 

 tubercles on posterior margin ; telson longer than broad, its 

 posterior third rather suddenly narrowed to a long tapering 

 dorsally keeled apex ; 3 transverse rows of tubercles, the first 

 composed of 2 large submedian tubercles, the second of 4, the 

 2 submedian ones longer than the lateral ones, the third of 2 

 small submedian tubercles ; a faint indication of a tubercle at 

 the base of the apical keel, 



