332 SPECIES OF COELUS (coleoptera; tenebrionidae) 



Mentum punctato-scabrous, more or less carinate on the median line; sides 

 straight and divergent; apex broadly and very feebly sinuate, apices of the 

 subtriangular lobes rather narrowly rounded. 



Prosternum before the coxae and process strongly, coarsely punctate, 

 punctures more or less separated, rarely subrugose. Process more or less 

 glabrous and impunctate along the median line and on the central area of the 

 dilated apex. 



Characters common to globosus (solidus) and grossus (saginatus): 



Epistoma very deeply sinuate, base arising gradually and usually arcuately 

 from the frontal suture; frontal plane beginning at suture, or, in other words, 

 suture narrowly and deeply impressed, front feebly convex throughout. 



Mentum relatively larger; surface more or less convex, glabrous centrally 

 toward apex, there impunctate as a rule; deeply impressed laterally along the 

 margin which is strongly beaded; sides less noticeably divergent and evidently 

 arcuate; apex broadly and quite strongly sinuate; apices of the lobes rather 

 broadly rounded, lobes sub-oblong. 



Prosternum before the co.xae and process coarsely punctato-rugose. Process 

 strongly, coarsely, asperately punctate. 



Characters common to ciliatus {longulus and curtulus), debilis 

 and sparsus: 



Epistoma more broadly and less deeply though conspicuously sinuate; 

 sinus trapezoidal in form, the bottom narrowly transverse; base arising 

 abruptly from the frontal suture. 



Front of head flattened between suture, anterior margin of eyes and vertex, 

 more channelled behind the suture. 



Mentum relatively small; sides straight and divergent; apex broadly and 

 feebly sinuate; apices of the lobes rather narrowly rounded; lobes subtriangular; 

 surface asperato-punctate, rarely carinate on median line. 



Prosternum in front of coxae and process asperato-punctate; process smooth 

 and distinctly impunctate on median line and on the central area of the dilated 

 apex. 



Casey has given an interesting description of the kxrvae of 

 Coelus} It is very desirable to have the larvae studied from 

 the view point of species. 



Genitalia of Coelus 



After prolonged and careful study of the genitalia in the 

 series above considered no distinctive specific characters have 

 been observed which would aid in the classification or diagnosis 

 of the species. 



Male genital characters: Edeagopbore elongately flax-seed shaped, moderately 

 depressed and reflexed at apex; color testaceous to dark castaneous according to 

 maturity and degree of chitinization. 



2 Annals N. Y. Acad. Sci., v, ]). 180. 



