DEREODUS. 123 



sinuate, its margin distinctly raised, the apices very shortly and 

 separately mucrouate, the dorsal outline a little less convex than 

 in D. sjxtrsus ; the punctures comparatively small and numerous, 

 evidently diminishing hehind, the intervals broader than the stria, 

 the posterior callus distinct ; the scales very small, convex and 

 separated, the setos microscopic and recumbent. 



Length, Sk mm. ; breadth, 3 mm. 



A>'i)AMAN Is. (Salle). 



Type S in the Paris Museum. 



This species finds its nearest allies in the African group repre- 

 sented by D. marf/inalis, Boh., which have the same kind of scaling 

 aud minute setae. The scales never overlap, as tliey frequently do 

 in most otlier Indian species, and under a Zeiss binocular (a,, x 2) 

 they appear convex and A\ithout sculpturing ; in denticollis, iwlli- 

 nosus, sjjcirsus and masfos they are much larger, sliglitly convex, 

 and fluted, while in vig'dans they are much more finely striate. 



86. Dereodus vigilans, sp. nov. 



Colour black, with dense brown and grey sealing, the under- 

 parts whitish; the prothorax grey, with a broad bro^n lateral 

 stripe, edged internally by a whitish line ; the elytra grey, or 

 sandy grey, more or less mottled with brown. 



Head plane, sparsely punctate and with a few fine wrinkles, the 

 central furrow deep and ascending the vertex, the margin adjoining 

 the eyes slightly elevated ; eyes almost circular, extremely pro- 

 minent and slightly curved backwards. Rostrum very little longer 

 than its basal width, strongly narrowed from the base to the middle, 

 thence parallel-sided to the apex, the central furrow deep, with a 

 shallow curved impression on each side of it, the ante-ocular im- 

 pression shallow and wrinkled. Antennce more elongate, funicle 

 with joints 3-7 not transverse but about as long as broad. Pro- 

 tliora-v somewhat broader than long ; in the <S the sides are 

 straight aud very slightly narrow"ed from the base to very near 

 the apex, then more sharply narrowed, in the $ the sides are 

 slightly rounded and more narrowed at the apex ; the basal margin 

 truncate, the upper surface with large deep punctiu'es (almost 

 hidden by the scaling), a very shallow ill-defined central furrow 

 and a curved transverse impression behind the middle. Elytra 

 parallel-sided from the shoulders to beyond the middle, broadly 

 rounded behind, the apices not mucronate, the strise deeply punc- 

 tate, the punctures very much reduced in the apical half, the 

 intervals a little broader than the striae, the posterior callus 

 distinct, the setae short and subdepressed. Legs : the middle 

 trochanters with a laminate process. 



Length, J 12-12|, $ 13| mm.; breadth, S 4g-4|, $ 5f mm. 



Madras : Coimbatore and Mysore (Pusa Coll.); Bangalore {J. 

 Cameron — Ind. Mus.). 



Types (S $ in the British Museum. 



