lot! Annul* of the SontJi African Museum. 



AMPELISCA PALMATA n. sp. 

 (Plate XXVIII. Figs. 30, 31.) 



Head equal to first three peraeon segments together, nearly trans- 

 versely truncate. Corueal lens distinct, small, the lower near the 

 antero-lateral angle. Side-plate 1 large, nearly concealing base of 

 2nd ariteuua, inferior margin of 1-3 moderately convex, the tooth at 

 postero -inferior angle large. Pleon segment 3-^with postero-inferior 

 angle quadrate, scarcely produced, segment 4 with a losv keel not 

 strongly raised above segment 5, apex subacute, no indent at base. 



Telson with 3 apical and 4 marginal spines in $ (A2760) ; in the 

 other ? ? (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 1st, flagellum much longer than peduncle, ca. 

 26-joiiited. 



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, f 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 gnathopocl, 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 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 spiuulose, 

 posterior apex with several long serrate spines, anterior margin of 6th 

 spinose, apex with long setae, hind margin with 2 spines on distal half. 



