Mr. J.8. Baly on the Kumolpide. 219 
own, there is in both sexes a considerable and equal protrusion of the 
last or nearly two last abdominal segments beyond the apex of the 
elytra. 
The only locality that I know of is Victoria. The name which I have 
adopted is that which I have received with it as its traditional name. 
A small example of a deep dull black colour, with the scutellum a 
trifle smaller, and the apical segment of the abdomen tinged with 
rufous, may possibly constitute a distinct species. 
e. Elytrorum apicibus dentatis. 
6. E. oblongus, Boisd. Voy. de l’Astrol. p. 52. 
E. australis, Brullé, Hist. Nat. des Ins. p. 257. 
E. oblongus, Aubé, Spec. Gén. Col. vi. p. 653. 
Long. corp. 7-71 lin., lat. 3 lin. 
A common species in Australia, to be recognized among present 
known species by its extreme apex being angular, not rounded, and 
the sinuations at the apex of the elytra being produced into a distinct 
sharp spur—a modification which closely connects the species with the 
genus Gyrinus. In the collections of the British Museum, Mr. Bake- 
well, Mr. Waterhouse, and the Rev. H. Clark. 
Of the six species which are here characterized, there are but two 
which absolutely and manifestly attain to all the generic characters 
of Enhydrus—E. rivularis and E. latior ; the other four species I 
place in the same group as being on the whole more nearly related 
to it than to the genus Gyrinus, and inasmuch as I have for doing 
so, with reference to two out of the four, the excellent authority of 
M. Aube. 
I possess in my cabinet, and I believe Mr. Bakewell has also, ex- 
amples which are not referable clearly to any of these species. In a 
few years, when the increasing number of entomologists in Australia 
is still further increased, we shall, I have no doubt, add still more to 
the list of this interesting Australian genus. 
XVII.— Descriptions of new Genera and Species of Eumolpide. 
By J. 8S. Baty. 
Bromius Philippinensis. 
B. oblongus, viridi-czeruleus, nitidus, violaceo-micans, supra pilis brevibus 
suberectis fuscis vestitus; thorace subgloboso, subcrebre punctato; ely- 
tris subcrebre punctatis, infra basin leviter transversim impressis; tibiis 
intermediis extus infra medium late emarginatis ; corpore subtus pilis 
