156 BULLETIN G3, UNITED STATES NATIONAL MUSEUM, 



Striolata is found in sonthern Texas and the adjoining regions of 

 Mexico. 



Fusifo7vnis is distributed over an extensive area as follows : Texas, 

 Xew Mexico. Kansas. Colorado, Xebraska, and southern Wyoming. 



Ojxica also has a wide distribu- 



Stjiolflta +w^., 1^^;,^™ K,, j-„ „, „ i„ „„ :„ 



Gorvi 



subnitena | \ >wfanm* Tcxas, Colorado, Kaiisas, Nebraska, 



and southern Dakota. 



GeneaJof/y. — The results of the com- 

 parative measurements indicate quite 



clearlv ui:)on what structural lines that 



divergence has taken place, while the 



relationships of the species among 



„ , - themselves have been sufficientlv indi- 



S\ibgeneric Trunk i i t i i • i • 7 ' ^ 



cated. 1 believe that striolata aiul 



Fig. L'.— Genealogical diagram fi/slfor/til.s liave diverged from a COUl- 



OV THE SUBGENUS PKOMI S. ' 



mon stem much later than cud f/ori/i 

 from the insidaris-sKbidteus: ramus. Knowledge of the Mexican 

 species may entirely change my views, as it only at present concerns 

 the species in the United States. 



Our six species may be separated as follows : 



Species with first joint of tlie anterior tarsi in the male consplcnonsly ])nhes- 

 ceut beneath. 



Surface shining: thorax distinctly widest at the middle, visibly narrowed 



at base: tarsal pubescent tuft conical iiisularis. 



Surface dull; thorax scarcely wider before tlH> base: tarsal tuft truncate 



at tip siihnitcui^. 



Species with first two joints conspicuously spongy iJubesc-ent beneath. 

 Femora (anterior) armed in the males. 



Elytra witli distant series of large dents or punctures pori/i. 



Elytra witli approximate series of rather small and closely i)laced 



l)unctures striohitn. 



Femora niutic in the males. 



Elytra 1 margins rounded, surface glabrous, not ])ubescBnt fiiftifortniK. 



Elytra] margins acute, surface opaque and pubescent opaca. 



ELEODES INSULARIS Linell. 



HleodcK iiiKHlarift Linei.i., I'roc. Ent. Soc. Wash., IW, No. o, ]). ISO (author's 

 extras published March 7, 1S<)0). 



P^longate, subovate. black, smooth, more or less shining and mod- 

 erately convex. 



Head more or less convex, rather finely, more or less evenly, or 

 irregularly punctate, punctures not dense, but slightly so on the 

 epistoma and sides. Antenna^ moderate in thickness, long, reaching 

 beyond the prothoracic base, very feebly compressed and just in the 

 least dilated in the outer three joints, third joint about equal to the 

 next two taken together, fourth slightly longer than the fifth, the 

 latter, sixth and seventh subequal, eighth slightly shorter, nintli 



