124 ARCANA NATURiE. 



at the junction of the Colorado and Gila rivers, California, iinder bark of a species oï Popuhis; very 

 rare. 



This genus is placed by Lacordaire near the Adelostomites, forming a distinct tribe. It is, in fact, 

 a very abnormal form and differs from ail the other gênera of Tenebrionidœ as at présent limited, with 

 one exception, by the anterior cotyloid cavities being confluent. The exception is the genus Cono- 

 notus, Lee, which is allied to Apocrypha, Esch. 



ARtEOSCHIZUS, Lee. 



7. A. cosTiPENNis, rufo-picea, opaca, brevissime flavo-setosa, thorace, capite angustiore elongato, siib- 

 quadrato ; elytris ellipticis thorace duplo latioribus, foveis seriatis cancellatis, interstitiis 2°, 4°, 6° 

 marginalique magis elevatis ; antennis crassis perfoUatis. — Long. 4 mill. — Tab. XIII, fig. 11. 



At the western edge of the Colorado Désert of California, near Vallecitas, under stones. ïhis genus 

 is closely allied to Stenosis, Herbst. (Tagenia, Latr.j, but difîers by the eleventh joint of the antennae 

 being smaller and closely applied to the tenth, by the from of the raentum and by the very narrow 

 eyes on the superior surface of the head. 



CERENOPUS, Lee. 



8. C. CONCOLOR, ater nitidus, capite marginibiis reflexis, transversim tmpresso, vertice subelevato; 

 thorace latitudine longiore, ovato, postice paulo angustato, ad latera parce subtiliter punctato, ante 

 basin vage foveato; elytris pone médium paulo latioribus, foveis seriebus 8 marginalique digestis; tibiis 

 anticis processu externo apicali brevi rotundato. — Long. 19-22 mill. — Tab. XII, fig. 3. 



Leconte, Annals ofthe Lyceum ofNatural History ofNew York, V, 143. Colorado Désert of California ; 

 rare. Cape San Lucas, Lower California, abundant. The maies of this genus hâve the anterior thighs 

 much thickened, the anterior tibise curved and denticulate internally, and the posterior thighs 

 toothed; in this species, the anterior tibise are besides deeply sulcate externally, and the posterior 

 thighs irregularly serrate beneath. 



The genus is confined to Southern California and Arizona, from which one species Ç. bicolor extends 

 into upper Texas. It is placed by Lacordaire in the tribe Scaurides, near Centrioptera, Mann., from 

 which it difiFers by many characters, but more particularly by the small size of the mentum. 



ELEÔDES, Esch. 



9. E. TEXANA, oblonga, nigro-picea, parum nitida, capite punctato; thorace subtiliter parce punctulato, 

 transverso, capite quadruplo latiore, supra parum convexo, lateribus Me depressis et paulo reflexis, 

 subrugosis, maxime rotundatis postice subsinuatis, ad basin truncato, angulis posticis redis, anticis 

 acutis acuminatis ; elytris thorace angustioribus, parallelis marginatis, dorso planis postice declivibus 

 (maris br éviter acuminato-productis , feminœ subacutis), sulcatis, sulcis punctatis, interstitiis parce 

 punctatis. — Long. 41 mill. — Tab. XII, fig. 5 d. 



Leconte, Proceedings ofthe Academy ofNatural Sciences of Philadelphia, 1858, p. 182. Texas ; this 

 belongs to group II, of my arrangement of the species oi Eleodes of the United States (loc. cit.). It is 

 allied to E. suturalis, Lee. (Blaps suturalis, Sayj, but is much larger and comparatively narrower, 

 with the sides of the thorax and elytra still more strongly margined. The spurs of the anterior tibiœ 

 are equal slender and acute in both sexes; the anterior thighs are armed with an acute tooth in the 

 maie and an obtuse one in the female, 



The genus Eleodes now embraces a large number of species of very varicd form. Some of thèse 



