376 Annals of the South African Museum. 



telsonic apex ; distal margin iu <- minutely serrulate, apex with a 

 simple narrow slit similar in both sexes. 



The is everywhere more strongly granulose than the 9 . 



Antenna 1, 1st joint stout, anterior apex not produced along 2nd 

 joint, flagellum ca. 8-jointed. 



Antenna 2, flagellum ca. 2-jointed. 



Mouth-parts in 9 modified. Maxilliped in $ with 4th-6th joints lobed. 



Per-aeopods with a few pectinate spines on inner margins of 4th- 

 6th joints, these joints also minutely setulose on inner margins, but not 

 furry. 



Male appendages on 7th peraeon segment short, stout and apically 

 blunt, their distance apart equal to the width of one of them. 



Pleopod 1, peduncle very broad, inner apex with 3 hooked setae ; 

 inner ramus much broader than long, triangular, outer ramus longer 

 than broad, oblong, apically truncate. 



Pleopod 2 similar to 1st, male stylet inserted near the apex of inner 

 ramus, equal in length to the ramus, consequently extending consider- 

 ably beyond the ramus, rather stout, apically blunt. 



Pleopod 3 similar, but inner ramus larger, outer ramus 2-jointed. 



Pleopods 4 and 5, both rami with strong transverse folds, outer 

 margin of outer ramus of 4th pleopod with fine setules. 



Uropod in $ with the inner ramus reduced to a mere point on the 

 peduncle, outer ramus elongate, stout, cylindrical, but flattened on the 

 inner surface and widening distally, rather strongly granulose, 

 especially distally, where 2-3 of the granules are like little teeth pro- 

 jecting inwards, setose chiefly on the outer distal margin ; in 9 the 

 rami not altered, inner ramus oblong, outer ramus rather smaller, 

 ovate, both rami apically truncate, with their margins sparsely 

 setulose. 



Length : 5'5 mm., 9 5 mm. ; 'breadth: <$ 2'5 mm., 9 2 mm. 



Colour: In spirit, yellowish. 



Locality: Umkomaas Eiver NW. by W. W., distant 5 miles. 

 40 fathoms. 3 $ $, 6 ovigerous 9 9 ; Tugela Eiver 1ST. by W. f W., 

 distant 15 miles. 40 fathoms. 2 c? (J, 2 $ $ . s.s. " Pieter Faure." 

 31/12/00 and 10/1/01. In both cases living in sponges. (S.A.M. 

 Nos. A4153 and A4154.) 



GROUP PLATYBRANCHIATAE. 



AKTOPOLES n. g. 



Body elliptical, depressed, the margin ciliate. Head laterally 

 enclosed by the 1st peraeon segment. Peraeon segment 7 not as 



