Si 



a 

 B 





On Aquatic Carnivorous Colcoptera or Dytiscidce. 



very near the outside of the wing-case quite close to the irregular 

 the epipleural margin, this I have called "submarginal stria"; 

 length, sometimes very short. 



and without any entire strise, . ..•••' 



but with either t'lree, four, or five true striae on each wing-case, 



with six striaj on each wing-case, 



"S \ with eight striw on each wing-case, . 



witli ten strife on each wing-case, 



with eleven stride on each wing-case, . 



witli twelve strise on each wing-case, . 



with two other stiia; on each wing-case, 



with five other strise on each, . . 



with six other stria; on each, 



with seven or eight other stria; on each, . 



with nine or ten other stri;e on each, 



with eleven other strise on each, 



with twelve other stria; on each, 



563 



punctures near 

 it is of variable 



To 



3 



a 



Group 1. (Nus. 805 to 827). 



Elytra without submai-giual stria, and without any entire striae. 



This group is a composite one, containing many different forms some of which 

 will probably prove to be different genera. No. 806 appears to have the middle 

 00X86 absolutely contiguous, while in the other species they are separated. No. 827 

 I have placed in this section, the male being without stripe, but the female has 

 seven or eight very fine stri«. 



805. Copelatus filiformis, n. sp. — (<^) Elongatus, angustus, parallelus, subnitidus, 

 testaceus, prothorace elytrisque infuscatis, limbo elytrorumque basi testaceis ; 

 antennis elongatis tenuibus ; elytris striis duabus interruptis, obsoletis, lineolisque 

 subtilibus, sparsis, ornatis. Long. 41, lat. if m.m. 



This is a very distinct species, resembling Celina australis, Clark (No. 803,) but 

 with the male front and middle tarsi strongly dilated, and but little compressed. 

 The very fine scratches on the elytra have a slightly oblique direction. \ have 

 seen only one individual. 



Himalaya, (Coll. Wehncke). 717. 



TRANS. BOr. DCB. SOC, N.S., VOL. II. 



4 D 



