64- 7nilianMuxeniHNof.es. [ Vol. Ill- 



Mas. Fronte convex;!, rngulose punctata, linea media sub-elevata ; 

 dentibus elytrormn validis. Femina Fronte plana, tenui>sime jrranulata, 

 foveam profunda!!! in vertice cxhibente, non-nunqifain supra os lateralitet* 

 impressii; dentibus elytrorurn ad tubercula setigera reductis. 

 Hab. : Doubtful. 



This species closely resembles P. chaleographns, but differs in the 

 following points : — ■ 



The Forehead in the female lias three strong- foveas with a central 

 space raised, smooth and dull, whereas in P. caalcographas the fovea 

 is single and is much nearer the mouth, and the lateral foveas do not 

 occur. 



The prothorax is generally similar to that of P. chalcographies, except 

 that it is very slightly narrower anteriorly ; the punctures on the pos- 

 terior half are stronger, closer, and more rugose. 



The interspaces are rilled with excessively fine punctures, only visible 

 under a high power, and much closer than the similar scattered punctures 

 iu P. chalcographies. 



The elytra in the male are testaceous, strongly infuscate along the 

 lateral margin, and for the whole of the apical declivity they are slightly 

 narrower and flatter, the apical depression is shorter and more vertical, 

 and the teeth are situated farther back, and closer to each other, and the 

 anterior pair point directly backward instead of obliquely upwards, and 

 their base is longer. 



In the female the elytra are more testaceous yellow (in spirit speci- 

 mens), sometimes with a distinct dark lateral border; they are slightly 

 flatter and less shining, and the rows of punctures are not so distinct 

 and regular as in P. ckalcographus. Antennae and legs as iu the latter 

 species. 



1 Platydactglns sex-spinosus Motseh. 



This insect was first described from Ceylon by Molschoulsky as 

 Kcco/itopferus sex-spinosus ; Eichhoif then described it independently as 

 Xi/leborus abnon/tis, and subsequently noted its identity with Motschoul- 

 sky's species, pointing out that the latter genus was bad and founded 

 on untenable characters, and ignoring Motschoulsky's specific name. In 

 1 886 he founded a new genus Platgdactt/lns, for P. gracilipes from the 

 Moluccas, and then suggested that his Xyleborux abnormis may belong to 

 this genus This 1 find to be correct. I prefer to retain MotschouU 



1 Noticed in vol. I, p. 61, of this serial as destroying paddy (Oryza saliva) in Lower 

 Karma by boring into the stalks. 



Mr. Blandford writes that the male will probably prove to be smaller in size and some- 

 what different in structure from the female. 



