476 Mr. F. P. Pascoe on some new or little-hnown 



Pedes mediocres ; tihice lineares ] tarsi antici art. tribus basalibus dila- 

 tatis ( c? ?) tertio subbilobo, penultimo parvo : intermedii et postici art. 

 basali paulo elongato, peniiltimo minore, ultimo mediocri. Prosternum 

 postice in cavitate mesosterni receptum. Corpus oblongo-ovatum, 

 convexum. 



I have adopted this genus, which does not appear to have been 

 piibhshed, from one of M. Deyrolle's lists. It differs from the 

 former, inter alia, in the third joint of the anterior tarsus being sub- 

 bilobed, with the small penultimate joint inserted between the lobes. 



Nantes fervidus. 



N. cupreus^ nitidus ; elytris lineato-sulcatis, sulcis fere obsolete punctatis. 



Hab. Mexico. 



Bright reddish copper, shining ; head finely but not closely punc- 

 tured ; lip testaceous, hairy ; prothorax minutely and rather remotely 

 punctured, the margin on each side thickened ; scutellum triangidar ; 

 elytra with nine narrow but deeply sulcated lines on each, the outer- 

 most not extending to the base, the lines marked at regular intervals as 

 if punctured ; body beneath and legs dark greenish copper ; tarsi and 

 antennee ferruginous. Length 4 lines. 



Arcothtmus [Helopinae]. 

 Caput retractum ; clypeus distinctus, antice rotundatus. Oculi transversi, 

 distantes. Palpi maxillares securiformes ; labiales cylindrici. Mentum 

 trans versum, antice bisinuatum, postice valde constrictum. Labium 

 apice emarginatum. Antennce filiformes ; articulo tertio elongato, 

 caeteris longitudine fequalibus, subobconicis, ultimo oblongo-ovato 

 Prothorax transversus, antice rotundatus, pone medium incurvatus 

 angulis posticis acutis, apice late emarginatus, basi truncatus. Elytra 

 prothorace basi latiora, dorso subplanata, lateribus subito declivia et 

 rotundata, epipleurse angustatse. Pedes insequales, graciles ; tibiie cal- 

 caratse ; tarsi postici articulo basali cseteris simul sumptis fere longiore. 

 Prosternum productum. Mesosternum longiusculum, latum, subver- 

 ticale. Processus interfemoralis latus. 



The type of this genus is rather above the ordinary size, and in 

 outline resembles the shorter species of Bla]ps. Like so maiiy other 

 genera in this family, it does not appear, to have any very obvious 

 affinities. 



Arcothymus ccenosus. 

 A. niger, pube scabra fuscescente tectus, infra glaber, nitidus ; elytris ob- 

 solete striatis. 

 Hab. Australia. 



Black, covered with a rough brownish pubescence composed of short 



