Malacoderm Genera Prionocerus and Idgia. 393 
scabroso-punctate. Elytra extremely elongate, depressed 
along the suture, twice as wide as the prothorax at the base, 
gradually narrowed from the somewhat swollen humeri to 
the tip, the apices produced, dehiscent, and rather sharp ; 
densely, very finely, rugulosely punctate, the seriately- 
arranged setigerous impressions clearly traceable. Legs long 
and slender. 
Length (excl. head) 13-134, breadth 31-3} mm. 
Hab. Assam, Nagas (Doherty). 
Described from two females, both abraded and in rather 
decayed condition. The extremely elongate, subacuminate, 
basally widened, viridi-vittate elytra, narrow head and pro- 
thorax, filiform, testaceous antenne, &c., readily distinguish 
this species, which has the general facies of a large (Hdemerid. 
It may have to be removed from Jdgia when the male is 
found. 
34. Ldgia maculiventris, sp. n. 
Elongate, robust, the prothorax and elytra opaque, the 
rest of the surface shining, finely pubescent and sparsely 
nuigro-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 contiguous in ¢, narrowly separated 
in ? ; antennz slender, comparatively short, filiform, joint 
1] a 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 seriately- 
arranged setz very conspicuous. 
¢. Posterior femora incrassate ; posterior tibiz curved, 
compressed and slightly widened at the apex; anterior tarsal 
joints 1-3 with a black comb along their inner edge ; 
terminal dorsal segment rounded at tip. Genital armature 
(Pl. XII. fig. 29): lateral lobes rather narrow, long, widened 
in their basal two-thirds beneath, the distal edge of the dilated 
portion flavo-ciliate ; median lobe very long, sinuate, drawn 
out into a somewhat hooked, upwardly curved, blunt point. 
Length (excl. head) 103-11, breadth 3-3} mm. (3 9.) 
Hab. S. Invta, Nilgin Hills (H. L. Andrewes). 
One male and three females. Separable from large 
examples of J. dimelena by the relatively broader elytra and 
the black tip to the abdomen, the male with incrassate 
posterior femora and curved posterior tibiz, the genital 
armature also different. 
