468 Rev. H. Clark on some Species 



Penthelispa obscnra. 



P. fusca, opaca; prothorace obsolete biimpresso, angulis posticis sub- 

 acutis ; elytris fortiter striatis, interstitiis punctatis, lateribiis subrotiin- 

 datis. 



JIab. Melbourne. 



Dark brown, opake ; head and protliorax coarsely and closely punc- 

 tured, the latter scarcely longer than broad, the base a little narrower, 

 the sides nearly straight, with the posterior angles subacute, the 

 longitudinal impressions on the disk almost obsolete ; scutellum trans- 

 \erse ; elytra slightly rounded at the sides, broadly striated, the strioe 

 with irregular shallow depressions, and each of the interstices furnished 

 with a row of punctures ; body beneath pitchy, coarsely punctured ; 

 antemiBS and legs didl ferruginous. Length 2 lines. 



Well distinguished from the last by its opake surface, subacute 

 posterior angles of the prothorax, the punctured lines between the 

 striae of the elytra, &c. 



XXXIV. — Descriptions of Species of the Genus Hydroporus, Clairv., 

 new to the European or British Catalogues. By the E,ev. Hamlet 

 Clakk. 



I SHOULD be very glad if any British entomologists, into whose 

 hands this paper may faU, would allow me to inspect any doubtful 

 species of this genus that may come under their observation. I 

 have no doubt that several species known on the Continent, as yet 

 unknown in Great Britain, may yet be detected in our pools and 

 streams : the latter habitat I would especially commend as Hkely to 

 supply interesting or new species ; two of the species described here 

 were taken in streams. Ac/abus brunneus, one of our rarest British 

 water-beetles, has just been taken by Dr. Power and Turner in 

 a stream in the New Forest ; Haliplus Jluviatilis is taken in streams 

 (in the Seine, Ebone, &c.) ; H. opatrinus I have taken on the Con- 

 tinent, in streams ; H. ferrugineus, another of our rarest species, was 

 taken by Stephens in a stream at Kimpton. In a paper in the 

 * Zoologist,' 1855, p. 4846, 1 pointed out the Continental species that 

 we might expect to find in Great Britain ; a few of these have since 

 been discovered. 



The following paper contains notices of three species of this genus 

 apparently hitherto undescribed, — two of them, H. dereUctus and 

 H. celatus, taken in Great Britain; tlie third, H. Amlalusite, in 

 Spain. 



