Malacoderm Genera Prionocerus and IJgia. ;553 



scabroso-pimctate. Elytra extremely elongate, depressed 

 aloiii; the suture, twice as wide as the prothorax at the base, 

 gradually narrowed irom the somewhat swollen humeri to 

 the tip, the apices produced, dehiscent, and rather sharp ; 

 densely, very finely, rugulosely punctate, the seriately- 

 arraiified setigcrous impressions clearly traceable. Legs long 

 and slender. 



Length (excl. head) L3-13J, breadth 33^-3^ mm. 



Hub. Assam, Nagas {Doherty). 



Described from two females, both abraded and in rather 

 decayed condition. The extremely elongate, subacuminate, 

 basally widened, viridi-vittatc elytra, nairow head and pro- 

 tliorax, filiform, testaceous antennae, &e., readily distinguish 

 this s[)eeies, \\ hieh has the general facies of a large Gjdeinerid. 

 It may have to be removed frotu Idyiu when the male is 

 fouud. 



31. Idgia maculiventris, sp. n. 



Elongate, robust, the prothorax and elytra opaque, the 

 rest of the surface shining, finely pubescent and sparsely 

 liigro-setose ; luteous, the head (the sides of the labrum 

 excepted), a rather large patch at the tip of the elytra, and 

 the apex of the abdomen, black or bluish black. Head 

 small, the labrum transverse, trapezoidal, concave ; eyes 

 very large and almost coatiguous in <$ , narrowly separated 

 in ? ; antennse slender, coniparatively short, filiform, joint 

 11a little longer than 10. Prothorax slightly wider than 

 the head, about as long as broad, rugulose. Elytra very 

 long, twice as broad as the prothorax, subparallel, narrow at 

 the tip ; densely, rugulosely punctate, the erect seriatelv- 

 arranged setae very conspicuous. 



(^ . Posterior femora iucrassate ; posterior tibiae curved, 

 compressed and slightly widened at the apex ; anterior tarsal 

 joints 1-3 with a black comb along their inner edge ; 

 tern)inal dorsal segment rounded at tip. Genital armature 

 (PI. XII. fig. 29) : lateral lobes rather narrow, long, widened 

 in their basal two-thirds beneath, the distal edge of the dilated 

 portion tlavo-ciliate ; median lobe very long, sinuate, drawn 

 out into a somewhat hooked, upwardly curved, blunt jjoint. 



Length (excl. head) lOi-11, breadth 3-3^> mm. ( ^ ? .) 



Hab. S. India, Nilgiri Hills (H. L. Audreires). 



One male and three females. Separable from large 

 examples of/, diinelama by the relatively broader elytra and 

 the black tip to the abdomen, the Uiale with incrassate 

 posterior femora and curved posterior tibiie, the genital 

 armature also different. 



