1919.) ■ 47 



cJ . Sixth veutral segment feebly triangularly eniarginate, and the seventh 

 truncate, at the apex. Anal brushes moderately long. 



2- Seventh ventral segment with two dentiform prominences in the 

 centre at the tip. Anal brushes shorter, and composed of finer and fewer hairs, 



Length 5-6 mm. 



Kah. India, W. Almora {R. O. C. : viii.1917 and vi.l918). 



Seven specimens. Smaller and less shining than D. caeruleo- 

 notatus ; the protliorax densely and much more finely punctured ; the 

 elytra sculptured and variegate much as in D. annandalei, the markings 

 less distinct and the puncturing finer than in D. caeruleonotatus ; the 

 tarsi more slender. The three females, if their sex has been rightly 

 identified by me without dissection, have shorter and more slender anal 

 brushes than the males. 



6. — Dianoiis cyanogaster, n. sp. 



Robust, above subopaque, leaden-black, with a faint bluish lustre in 

 certain lights, beneath biilliaut cyaneous, the palpi and antennae black ; 

 densely, very finely punctate, the puncturing of the prothorax a little sparser 

 on the middle of the disc ; clothed (the prothorax included) with fine pubes- 

 cence, which is in great part cinereous, giving a variegate appearance to the 

 raised portions of the elytra. Head moderately broad, the intra-ocular grooves 

 deep ; eyes rather small ; antennae not very long. Prothorax much narrower 

 than the head, about as long as broad, arcuately dilated at the sides anteriorly 

 and constricted before the base ; with a deep oblique groove on each side of 

 the disc behind the middle, bordered posteriorly by a conspicuous ridge — 

 which appears nodose at its inner extremity as seen from above, — and a more 

 or less distinct (rarely obsolete) tine median carina at the base. Elytra large, 

 Bubquadrate, much wider than the head, about as long as broad ; longitudinally 

 depressed along the suture anteriorly and within the humeri, and with one or 

 two other obliquely placed depressions on the apical half, the intervening spaces 

 appearing sinuously swollen. Ventral segments 1-4 with a glabrous impunc- 

 tate space down the middle ; anal brushes long. Legs moderately long, not 

 very slender, the tarsi comparatively stout, joint 4 without lobes. 



cJ. Fifth ventral segment feebly, and the sixth triangularly, emarginate, 

 the fifth depressed in the middle behind. Genital armature (fig. 3) : lateral 

 lobes long^, slender, compressed, slightly sinuate, set with several long haira 

 at the apex within ; median lobe drawn out into a long point. 



Length 7-8 mm. (J$.) 



Hal. India, W. Almora (jET. G. C. : vi.l918). 



Sixteen specimens. Distinguishable amongst the allied Indian 

 forms by its robust build, comparatively short antennae and legs, dull 

 leaden-black, densely, finely punctate upper surface, cinereo- variegate, 

 uneven elytra, brilliant blue, unequally punctured ventral surface, etc. 

 The genital armature is very like that of D. caeruleonotatus. 



