130 PERCY SLADEN TRUST EXPEDITION 



Antennae with 13 — 14 segments, blackish, the apical segments paler; third and 

 fourth short, almost cylindrical and equal in length, the remainder a little longer and 

 stouter, passing from cylindrical to ovate. 



Head globose, smooth, shining black. 



Pronotum about as wide as the head or a trifle narrower, almost square, shining 

 black. 



Elytra rather short, truncate apically, dull black, with a fine greyish pubescence. 



Wings long, of the same colour and texture as the elytra (in the three females examined 

 the wings scarcely protrude ; in the two males they are almost as long as the elytei). 



Legs yellowish ; the femora dusky and rather thick. 



Abdomen parallel-sided in the $, slightly dilated about the middle in the ?, black, 

 shaded with yellowish towards the apex. 



Last dorsal segment $ transverse, shining black, smooth with a median depression, 

 rectangular; in the % gently narrowed. 



Pygidium $ depressed and dilated, nearly as broad as long, gradually narrowed 

 towards the apex, which is emarginate ; in $ the pygidium is very short, scarcely 

 discernible, obtuse and truncate. 



Forceps with the branches in the $ remote at the base and elongate, feebly arcuate, 

 relatively stout and rather depressed in the basal quarter, yellowish in colour, and 

 clothed with many long fine hairs, with a few denticulations on inner margin in the 

 basal quarter ; in the ? less remote, stouter and straighter, the inner margins sharply 

 serrate. 



This species is characterised by the pygidium of the male, which has the form of a 

 broad spear-head, with the point itself emarginate ; in general structure it resembles 

 L. minor and L. pilicornis. 



The description is based on two males and one female. It is dedicated to Mr J. C. F. 

 Fryer. 



Localities. Seychelles. Silhouette : 1 $, Type, 2 %, from high forest, VIII — IX. 

 1908; Mare aux Cochons and forest above, 1 $, IX. 1908. Praslin: Coco-de-Mer Forest in 

 the Vallee de Mai, 1 $, 28—29. XL 1908. 



SPABATTBLE. 



Gen. PLATYLABIA, Dohrn. 



1867. Stett. Ent. Zeit. xxxviii. p. 347. 



10. Platylabia thoracica, Dohrn, 1867, Stett. Ent. Zeit. xxviii. p. 348. 



This is a widely distributed Oriental species, recorded from Burma, Ceylon, and the 

 Malay archipelago. De Bormans records, in his paper in 1895, P. major from the 

 Seychelles ; this only differs from P. thoracica in the non-protruding pygidium. But 

 all the specimens brought back by the Expedition have the very distinct prominent 

 pygidium of P. thoracica. I am inclined to believe that de Bormans made a mistake, 

 and that the specimens from Mahe should be referred to P. thoracica. 



