64- Indian MuH'iun Notes. [ Vol. III. 



lias. Fronte convexn, rngulose punctata, Hnea media suL-elevata ; 

 dentibus elytronim validis. Femina. Fronte plana, tenuissime i»Tanulata, 

 foveam profundarn in vertice exhibente, non-nunqiiarn supra os lateraliter 

 impressa; dentibus elytrorum ad tubercula setig-era reductis. 

 Hab. : Douhtful. 



Tliis species closely resembles P. chalcographus, but differs in tlie 

 following points : — 



The forehead in the female has three strong fovese with a central 

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

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

 occur. 



The prothorax is generally similar to that of F. chalcographus^ except 

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

 terior half are stronger, closer, and more rugose. 



The interspaces are filled with excessively fine punctures, only visible 

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

 in P. chalcographus. 



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

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

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

 and the teeth ai'e 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. chalcographus. Antennse and legs as in the latter 

 species. 



^ Tlatydaciylns sex-spinosus Motsch, 



This insect was first described from Cej'lon by Motschoulsky as 

 Eccoptopterus sex-spinosus ; lilichhoff then described it independently as 

 Xyleborus abjwrmis, and subsequently noted its identity with Motsclioul- 

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

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

 1886 he founded a new genus PlaiydactyUis^ for P. gracilipes from the 

 Moluccas, and then suggested that his Xyleborus 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 sativa) in Lower 

 Buriiia by boring into the stalks. 



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

 what different iu structure from the female. 



