68 U. S. p. R. R. EXP. AND SURVEYS — ZOOLOGY — 47TH PARALLEL, 



Steilacoom, one siiecimen, Mr. Gibbs. Eesembles in size and form H. punctipennis, Lee, 

 (Report of Capt. Pope's Expedition,) but is distinguished by the blue color and the obsoletely 

 punctured elytra. 



H. cerina, flavo-testacea, nitida, ovalis convexa, thorace parce subtiliter punctulato, convexo, 

 lateribus rotundatis ; elytris subtiliter punctato-striatis, ad latera et apicem laevibus ; ore post- 

 pectoreque paulo infuscatis. Long. '06. 



One specimen, San Jose, California. This species seems to belong to the division named 

 Crepidodera, by Chevrolat, but the thorax has no posterior impression. 



H. aereola, oblonga, cupreo-aenea, nitida, capite angulatim impresso, occipite laevi, thorace 

 subrugoso, grosse confertim punctato, postice transversim sulcato, et striola brevissima utrinque 

 insculpto ; elytris fortiter striato-puuctatis, interstitiis subtilissime punctulatis, antennis pedi- 

 busque ferrugineis. Long. -1 — -13. 



San Francisco; allied closely to H. helxines, but the thorax is more punctured and less convex, 

 and the posterior transverse impression is less deep, and does not extend beyond the short basal 

 striae. 



H. suhcrinUa, oblonga, obscure aenea, capite angulatim impresso, occipite laevi, thorace 

 confertim punctato, jiostice transversim sulcato et fovea parva basali utrinque notato ; elytris 

 cinereo-pubescentibus, fortiter striato-punctatis, interstitiis parce rugosis et punctulatis ; anten- 

 nis pedibusque testaceo-piceis, femoribus posticis obscuris. Long. '05 — "07. 



San Francisco. Allied to H. pitbescens, but narrower and less pubescent ; the thorax is less 

 coarsely and less densely punctured. 



H. lifjafa, elongata, nigra glabra, thorace latitudine breviore, sat punctato, piceo-nebuloso, 

 lateribus late rotundatis, versus latera postice obsolete impresso, elytris sat dense punctatis, 

 stria suturali obsolete impressa, vitta dorsali lata testacea utrinque ornatis, antennis pedibusque 

 piceo-testaceis, femoribus posticis nigris. Long. '15. 



One specimen, San Jose, California. Belongs to the division Systena, of Chevrolat, and is 

 allied to H. elongata Fabr., (fceniata Say,) but the thorax is shorter and more gradually 

 rounded on the sides. 



H. subcenea, elongata, aeneo-nigra glabra, capite parcius, thorace sat dense minus subtiliter 

 punctato, latitudine fere sesqui breviore ; elytris sat dense minus subtiliter punctatis ; antennis 

 pedibusque fusco-testaceis, illis articulo primo, his femoribus obscuris, posticis autem nigris. 

 Long. '15. 



One specimen, San Jose, California. Belongs also to the division Systena, and is similar in 

 appearance t.> E. frontalis, but the thorax is broader and strongly punctured. 



H. albionira, oblongo-elongata, aeneo-nigra, nitida, capite parcius, thorace elytrisque minus 

 subtiliter punctatis ; thorace latitudine breviore antrorsum angustato, antennis pedibusque 

 nigris. Long. -08. 



San Jose and San Diego, California. Of the size of H. striolata, but narrower and less 

 convex. 



H. lepidula, oblonga, aeneo-nigra, nitida, capite parcius, thorace elytrisque minus subtiliter 

 punctatis, thorace latitudine breviore antrorsum angustato ; elytris utrinque vitta dorsali 

 postice paulo flexa, et fere ad apicem extensa pallida ornatis ; antennis pedibusque nigris. 

 Long. '11. 



