the Seijchelles Idands and Aldalra. 171 



of the mandibles black, subopaque, the head shining, thickly 

 clothed witli rather coarse pallid pubescence* Head mode- 

 rately produced in froiit, the epistoma rather long, coarsely, 

 closely punctate ; eyes large ; mandibles each bifid at the 

 tip ; antenna; not reaching the a])ex of the elytra, joints 3 

 and 4 subequal in length, 11 feebly constricted at the middle. 

 Prothorax considerably longer than broad, subcordate, 

 narrow, densely, coarsely, subconfluently punctate, broadly 

 depressed and subfoveate on each side of the disc anteriorly. 

 Elytra long, nearly twice as wide as the prothorax, somewhat 

 convex, closel}'^, finely, scabroso-|)unctate, each with two 

 distinct costse on the disc and another near the outer margin, 

 all three extending from the base to near the ajjcx. 



cJ . Sixth (hidden) ventral segment divided into two 

 narrow, curved, concave, forcipiform lobes, the corresponding 

 dorsal segment similarly shaped ; sedea^us long, ratlu-r 

 stout, gradually widened towards the ti[), the latter rounded, 

 lateral lobes very long, slender, and feebly carved. 



Leng h 8-12 mm. ((??.) 



Loc. Aldabra (1908-9, I\>/er). Seychelles : Round 

 Island (Mus. Brit.). 



Found in abundance at Ahhibra, in several parts of the 

 atoll. In the British Museum there are also two females 

 and a male of the same species from Kound Island. Very 

 few males are contained in the long series before me ; three, 

 however (including the one from Round I.) have been 

 identified, and their genital armature examined. The bilid 

 mandibles, the densely, rather coarsely punctured, dull, sub- 

 l)ifoveate, narrow prothorax, and the finely punctate, more 

 distinctly costate elytra, readily separate A. aldubruna from 

 Oxac'is [Ananca) grisescens, Fairm. A. (Sefisinia) andreivsi. 

 Arrow, from Christmas Island, under which two species 

 were confused by the author, has the terminal joint of the 

 antennae almost divided into two, the head much smoother, 

 the prothorax non-foveate, and the elytra sharply bicostate 

 on the disc, with the rest of their surface very finely, closely 

 punctate. 



9. Ananca scahripenyiiSj^]). n. 

 (Text-tig. 2, (J genital armature.) 



Sessinia andreivsi^ Al■^o^Y, MonogT. Christmas Isl. p. 107 (1900) 



( $ , nee cS )• 



Elongate, testaceous or obscure testaceous, the eyes and 

 the tips of the mandibles black, suhopaque, the head and 

 prothorax shining, finely pubescent. Head moderately 



