Contributions to the Crustacean Fauna of South Africa. 205 



Male stylets on 7th peraeon segment contiguous, straight, slightly 

 narrowed distally, with blunt apices. 



First and second pleopods with 6 hooked setae on inner apex 

 of peduncle. 



Penial filament on the second pleopod nearly half as long again 

 as ranii. 



No plumose seta representing the outer ramus of the uropod. 



Length : 17 and 13 mm. ; breadth : 6 and 5 mm. 



Colour : In spirit, straw-colour, with minute dots, chiefly visible 

 on the side-plates and pleon. A dark narrow medio-dorsal streak on 

 peraeon, dividing on segments 1, 4, 7 to enclose an oval space rather 

 lighter than the rest of the ground-colour. 



Locality : St. James, False Bay, on seaweed in rock-pools. (Dr. 

 W. F. Purcell and Mrs. Purcell, Feb.-April, 1901.) 



GEN: SYNIDOTEA, Harger. 

 For synonymy see Stebbing, S. Air. Crust, pt. 2, p. 59, 1902. 



SYNIDOTEA SETIFER, n. sp. 

 (Plate XVIII. A.) 



Body nearly parallel-sided, but tapering posteriorly, smooth. Head 

 with prominent antero -lateral angles, the margin between them 

 deeply excavate. 



Eyes large, prominent. 



Side-plates completely fused with their segments ; inferior margin 

 of 2nd and 3rd segments strongly angular, of 4th-7th segments 

 straight. 



Pleon of two segments, the terminal one slightly narrower than 

 the first, sides slightly convex and converging distally, apex ernar- 

 ginate, lateral angles acute. 



First antenna stout, 2nd and 3rd joints not very much more 

 slender than 1st, 4th joint a little longer than 2nd and 3rd combined, 

 narrowing distally and fringed with about 9 tufts of setae, with 

 a longer terminal seta. 



Second antenna, ultimate joint of peduncle rather shorter than the 

 two preceding joints combined, flagellum 17-jointed, peduncle with 

 long scattered setae. 



Epistome not broader distally than upper lip, which is rather 

 asymmetrically bilobed at the apex and fringed with long setae. 



Lower lip as in S. hirtipes, inner margin strongly fringed. 



