287 



OF SOME 



NEW GENERA AND SPECIES OF PHYTOPHAGOQS COLEOPTERA 



FROM MADAGASCAR 

 by llartîii Jacoby. 



In this paper I give the descriptions of a number of Phytophagous 

 Coleoptera from Madagascar which Mons. Clavareau had the kind- 

 ness to submit to me for examination; thèse species are mostly 

 from Diego Suarez to which I hâve added a few others contained in 

 my collection from Madagascar which I believe to be undescribed. 

 Spécial interest is attached to the Diego Suarez insects on account 

 of a species of undoubted South American origin having also now 

 been discovered at Madagascar, the more so as this species is by no 

 means a common one as far as I am able to judge ; the ocurrence 

 of the insect in thèse two widely remote régions can only be 

 accounted for on the theory of having been introduced into the 

 island by some means or other. 



GRYPTOGEPHALUS ARGENTEOHIRSUTA n. sp. 



Dark blue, head with a band of silvery hairs anteriorly, thorax 

 rufous, impunctate, the base compressed and lobate, scutellum 

 black, elytra strongly punctate-striate, dark blue. 



Length 7 mill. 



Broad and robust, the head dark blue, finely punctured, the space 

 between the eyes occupied by a transverse band of silvery hairs, 

 eyes very large, occupying the entire sides of the head, deeply 

 notched, rather closely approached at the top, clypeus somewhat 

 raised, concave at its anterior margin, labrum black, margined 

 with flavous, antennse slender, black, the third and fourth joint 

 equal; thorax scarcely twice as broad as long, strongly narrowed 

 anteriorly, the sides straight, the posterior margin oblique, the 

 base in front ofthe scutellum compressed into a blunt and elongate 

 tubercle, the surface entirely impunctate, rufous, shining, scutellum 

 subcylindricum, its apex truncate, black; elytra dark blue, 

 strongly lobed below the shoulders, the latter very prominent, the 

 dise strongly punctate-striate, the interstices impunctate; below 

 and the legs dark blue, prosternum with a long toothhke projection 

 at the middle; pygidium blue, sparingly punctured and pubescent. 



Hah. Madagascar. 



ANNALES DE LA SOC. ENTOM. DE BELGIQUE, T. XLV, 30 X 1901 24 



