4St On A(jiiniic Curniroroiis Coleoi>tevn or DijliscidiB. 



The male has the front and middle tarsi rather strongly dilated, and the 

 front tibire excised at the base inwardly : the only female individual I have seen is 

 dull and opaque, but distinctly punctured, its front tibia; are not excised. Though 

 very closely allied to Hydroporus coUaris, the species is quite distinct. 



. North America, (United States). -10:^ 



Gi:on' S. 



G40. Hydroporus terminalis, n. sp. — < )s-alis, angustulus, minus convexus, sine 

 pubescentia, subnitidus, abdomiue pectoreque nigris, supra fusco-testaceus, pedibus 

 sordide rutis, antennis fuscis basi testaceo ; prothorace valde transverse, inconspicue 

 punctato ; elytris crebre subtiliter punctatis, punctis versus apicem magis conspicuis; 

 coxis posteriori bus sat evidenter punctatis. Long. 3, lat. 1^ m.ni. 



The front tarsi in the male are rather broader tlian in the female. This species 

 is extremely similar to Hydroporus vilis, Lee, but is a little narrower, the antennre 

 are darker in colour, the punctuation is ruther more conspicuous, and all the tarsi 

 are smaller. 



North America, (California). 404. 



641. Hydroporus vilis, Lee, M.C — Ovalis, minus convexus, sine pjubescentia, 

 subnitidus, abdomine pectoreque nigris, s'i[)ra fusco-testaceus, antennis pedibusque 

 rufis; prothorace obsolete punctato; elytris minus crebre subtiliter punctatis; coxi.s 

 posterioribus obsolete punctatis. Long. :3, lat. Is m.m. 



I am scarcely able to distinguish the sexes of this species. 



Nortli America, (California, Utah)- 40r>. 



642. Hydroijorus latebrosus, Lee, M.C. — Ovalis, minus convexus, latiusculus, 

 sine pubescentia, subnitidus, abdomine pectoreque nigris, supra fusco-testaceus, 

 antennis pedibusque sordide rufis ; elytris .sparsim subtilius punctatis ; prosterni 

 processu angusto ; coxis posterioribus obsolete punctatis; abdomine .segmonto 

 ultimo fere impunctato. Long. Hi, lat. 2 m.m. 



The two individuals before mo arc I tiiiidv male and female, though extremely 

 similar to one nnotlier. Tlie species is extremely close to H. vilis, but is larger and 

 relatively very much broader. A specimen has been determined for me by Lccontc, 

 otherwise I should not have recognized the name from description. 



North America, (C.ilifornia). 4(16. 



643. Hydi'oporus hardyi, n sp. — Ovalis, minus convexus, latiusculus, sine pubes- 

 centia, subnitidus, abdomine pectoreque nigri.s, antennis pedibu.squc rufis ; elytris 



