1921.] 



203 



antennae, the epistoma, palpi, tarsi, femora (except at the tip), lower edge of 

 the elytra, and the ventral surface in part, testaceous, the anterior margin of 

 the protliorax ruFescent ; head and prothorax densely, finely, the elytra 

 extremely niiiuitely, punctate. Head rather small, the epistoma prominent; 

 antennae comparatively slender, slightly tapering- outwards, joint 3 elongate, 

 4-11 gradually becoming shorter, 11 small, oval; maxillary palpi moderately 

 long, joint 2 elongate, 4 oval, stout, nearly twice as long as 3. Prothorax 

 short, rapidly narrowing from the base, bisinuatf< at the base and apex, the 

 anterior angles prominent. Elytra moderately long, obliquely depressed on 

 the disc below the base, and with faintly impressed longitudinal grooves on the 

 disc. Beneath opaque, finely shngreened, sericeo-pubescent; intermediate 

 coxae separated by about twice the width of the rather broad prosternal process, 

 the mesosternmn sulcate down the middle for its reception; ventral segment 5 

 deeply eniarginate, fci hidden, 7 fully exposed. Legs very elongate ; femora 



Fsephemis tenuipes, c?. 



broad and compressed ; tibiae slender and slightly curved; tarsi very slender, 

 the claw-joint curved and 1 nger than the others united, the claws elongated. 



Length o-oj, breadth 2^-3 mm. 



Sab. W. and Central Almora Division of Kumaon (S. G. C. : 

 viii.1917 and ix.l920). 



Two males. Very like the X. American P. lecontei, numerous 

 specimens o£ which have been sent me by Mr. H. S. Barber ; differing 

 from that insect in its rather more elongate shape, the prominent 

 anterior angles of the prothorax, the more slender antennae and palpi, 

 the greatly elongated, slender tibiae and tarsi, and the more widely 

 separated anterior and intermediate coxae. The larva of a Psephenus, 

 presumably of this species, has been found in the Himalayan streams by 

 both Dr. Imms and my son ; it is at present undescribed. 



