136 Annals of the South African Museum. 
AMPELISCA PALMATA DN. Sp. 
(Plate XXVIII. Figs. 30, 31.) 
Head equal to first three peraeon segments together, nearly trans- 
versely truncate. Corneal lens distinct, small, the lower near the 
antero-lateral angle. Side-plate 1 large, nearly concealing base of 
2nd antenna, inferior margin of 1-3 moderately convex, the tooth at 
postero-inferior angle large. Pleon segment 8;with postero-inferior 
angle quadrate, scarcely produced, segment 4 with a low keel not 
strongly raised above segment 5, apex subacute, no indent at base. 
Telson with 3 apical and 4 marginal spines in 2? (A2760); in the 
other 2 2 (A2747) the marginal spines are extremely reduced or even 
absent ; in the ¢ only the apical spines present. 
First antenna extending well beyond peduncle of 2nd antenna, its 
peduncle reaching end of penultimate joint of peduncle of 2nd antenna, 
2nd joint longer than Ist, flagellum much longer than peduncle, ca. 
26-jointed. 
Second antenna reaching to end of 2nd pleon segment, ultimate and 
penultimate joints equal, flagellum longer than peduncle, ca. 34- 
jointed. 
Mandible, 2nd joint of palp oval, 2 or 3 times as long as broad, 3rd 
joint slender, 5 length of 2nd. 
Maxilliped, outer plate with 10 narrow-lanceolate spine-teeth on 
inner margin, 3rd joint of palp broadly oval, but not extended beyond 
insertion of 4th. 
First gnathopod, 6th joint a little longer and broader than 5th, 
palm well defined, a little oblique, shorter than hind margin, with 
setae and several large spines decreasing in size towards hinge, finger 
matching palm, inner margin spinose. 
Second gnathopod, 5th joint 3 length of 6th, both narrow linear. 
First and second peraeopods, 4th joint not apically produced, 7th 
longer than 5th and 6th together. 
Third peraeopod, front margin of 2nd joint irregularly setose and 
spinose, posterior apex of 5th with 1 spine nearly as long as, and 
1 half as long as 6th, both spines apically serrate, anterior apex with 
2 setae (1 very long), posterior margin of 6th with 5 spines, anterior 
margin with 5 spinules on proximal half, the distal half with setae 
becoming longer towards the apex, which is prominently produced 
beyond the insertion of the 7th. 
Fourth peraeopod, anterior margin of 5th joint irregularly spinulose, 
posterior apex with several long serrate spines, anterior margin of 6th 
spinose, apex with long setae, hind margin with 2 spines on distal half. 
