BY G. R. WATERHOUSE, ESQ. 295 



angulos depresso : elytns elongato-oimtis, ad apicem 

 rotundatis, i^rofunde imnctato-striatis : antennis pedibusque 

 pallide testaceis : palpis pallide testnceis, apice nigris, 

 gracillimis et elongatis. (Long. corp. I lin.) 

 Hydrasna testacea. Curt. B. E. p. 307. 



This species may readily be distinguished from its pale 

 congeners by the coarse sculpture, and by the form of the 

 thorax, which is scarcely dilated at the sides. 



I have taken this species tolerably plentiful in the ditches in 

 Battersea-fields. Epping: E. Doubleday, Esq. Halifax: 

 A. H. Davis, Esq. 



Sp. 7. Hyd. nigrita. Atra ; capite dense punctnlato, ocnlis 

 prom'mentibus: tJiorace breviore, dense punctato, sulco 

 ulrinqiie longltudinaU versus latera imjyresso : elytris 

 brevibus, ocatis, lavissinie punctato-striatis, siriis sub- 

 conjluentibiis : antennis, ^;cf//6w5 palpisqne rufo-testaeeh. 

 (Long. Corp. | lin.) 



Hydraena nigrita. Midler Germ. Ins. Sj)e. p. 93. 

 pusilla. Stephens. 



The short ovate form and dark colour distinguish this 

 species from all the foregoing. 



I have taken three specimens of this species in the neigh- 

 bourhood of London. 



Sp. 8. Hyd. pygmoea. Piceo-brunnea ; capite nigro, fronte 

 punctato, oculis jyrominentibus ; thorace antice lato, jiostice 

 attenuato, foreis quatuor impressis, duobiisque leinter im- 

 pressis discoidalibus, j)iinctttto ; elytris breribus, ovatis, 

 dense jitmctatis : ijedibiis robustioribiis, piceo-ferriigineis, 

 palpis brevioribus et robustioribus, rnfo-ferrugineis. (Long. 

 Corp. g lin.) 



Distinguished from all the foregoing by the want of regular 

 striae on the elytra : about the size of H. pusilla : the thorax 

 is longer and broader in front, less deeply punctured, but the 

 foveae are more deeply impressed: elytra shorter and not so 

 ample ; legs and palpi thicker. 



The only specimens I have seen of this curious little 

 species, were taken at Hebden-bridge by Mr. Gibson. 



