On Aquatic Carnivorous Coleoptera or Dytiscide. 563 
very near the outside of the wing-case quite close to the irregular punctures near 
the epipleural margin, this I have called “submarginal stria”; it is of variable 
length, sometimes very short. 
- _ { and without any entire strie, . . . . ap . Group 1. Nos. 805 to 827. 
& | but with either three, four, or five true strize on each wing-case, ees Nos. 828 to 836. 
A | with six striz on each wing-case, . . : 5 ape teh No. 837. 
5 e 4 with eight striae on each wing-case, . 5 : ; : ; youn eas Nos. 838, 839. 
a with ten strie on each wing-case, . ° ei 0e Nos. 840 to 845. 
3 | with eleven striz on each wing-case, . 6 . ; : Oras tere Mise No. 846. 
a with twelve striz on each wing-case, . ; ° , : ule No. 847. 
= { with reean Att strize on each wing-case, . + : wits att & No. 848. 
: | with five other striz on each, . 5 ; : ¢ 6 eee OF Nos. 849, 850. 
i = : with six other strive on each, . ‘ : ; : : : » NO, Nos. 851 to 864. 
Z = with seven or eight other striz cn each, . : ; ; ; me. 6) Nos. 865 to 868. 
$ & with nine or ten other strix on each, ‘ ; ‘ F ; yd Nos. 869 to 886. 
5 with eleven other striz on each, : ; 5 . ; ; a dls}, Nos. 887 to 895. 
= | with twelve other striz on each, 6 p Q ; j se LA, No. 896. 
Group lL. (Nos. 805 to 827). 
Elytra without submarginal stria, and without any entire strice. 
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 
cox absolutely contiguous, while in the other species they are separated. No. 827 
J have placed in this section, the male being without striz, but the female has 
seven or eight very fine strie. 
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. 43, lat. 14 m.m. 
This is a very distinct species, resembling Celina australis, Clark (No. 806,) 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, I have 
seen only one individual. 
Himalaya, (Coll. Wehncke). 717, 
TRANS. ROY. DUB. SOC., N.S., VOL, II, 4D 
