NORTH OF MEXICO. 



291 



This species has been for a long time considered as the female of coiiforlns, but the 

 very marked difference in the form of thorax, and the very feebly elevated elytral ridges 

 not serrate at the summits, have caused me to place it as distinct. In all the specimens 

 of contortu8 before me, the median costa does not extend so far forward as to touch, the 

 thoracic base, while in regularia this is the case. 



Specimens sent from Texas by G. W. Belfrage, do not differ in size from the preced- 

 ing species. 



TRIBE XV — BRANCIIINI. 



Body oval, apterous. Middle coxa) with distinct trochantin. Antenna) slender, outer 

 joints gradually broader. Mentum moderate, trapezifbrm emarginate in front, inserted on 

 a gular peduncle, which is emarginate and fissured, and not covering the maxilla). Palpi 

 slightly dilated. Intercoxal process of abdomen triangular, rounded at tip. 



BRANCHUS, Lee. 



Branchus, Leo., Class. Col. N. Am. 223. 



B. floridanus, Loo., Now Spec, p. ii. Florida.* 

 .Length .60 inch. 



15. w o o (1 i , Loo., Now Species, p. 11 1, (note) Island of Now Providence. 

 15. obsourus, Horn, Proc. Acad. 180(5, p. 308. Nicaragua. 

 A no ct ns vestitus, Horn, Proc. Acad. 18(5(5, p. iiili). Honduras. 



Aneotus differs from Branchus in the absence of any prolongation of the external apical angle of the anterior 

 tibia), and other characters derived from the antenna) and mentum. 



TRIBE XVI — CONIONTINI. 



Body elongate oval or sub-globose, apterous. Labrum very prominent. Mentum 

 small, trapeziform, emarginate in front, ligula transverse lunate. Gular peduncle very 

 short. Anterior coxse sub-transverse, middle coxa> with distinct trochantin, hind coxre 

 narrowly separated, intcr-coxal process acute. First joint of hind tarsi very long. Our 

 genera are three in number, and may be arranged as follows: 

 Antcnnao short. 



First joint of anterior tarsi prolonged into a spine. coelus. 



Antenna) long. 



Anterior tibia) with, outer angle prolonged. eusattus. 



Anterior tibia) truncate at tip. coniontis. 



The last two genera differ also in their form, Eusattus being broadly oval, Coniontis 

 elongate oval, with sides more or less parallel. 



* In addition to the species above indicated, two other species are known, and also another genus with a single 

 species. 



