REVISION OF TENEBRIONID SUBFAMILY CONIONTIN^E 75 



that they are properly placed in the table from such characters 

 as have been published. 1 



Sphaeriontis n. gen. 



In this genus the epipleuras have a form intermediate between 

 the unusually narrow type of Eusattus dubius and the broader 

 form, with the outer edge deflexed basally, represented by 

 Eusattus convexus and allies, being nearly similar to the devel- 

 opment occurring in productus, though never observable at the 

 sides of the body when viewed dorsally. The fringe of yellow 

 hairs at the apical and basal margins of the prothorax are much 

 more developed than in any other genus, and the sides of the 

 body are more conspicuously ciliate ; the femora, also, bristle 

 with longer fulvous hairs. The genus is isolated principally by 

 the very broadly oval form and great convexity of the body, the 

 more widely separated coxae, even surface of the elytra and the 

 more prolonged outer apical angle of the anterior tibias. The 

 large and very broad scutellum sometimes makes a very shallow 

 sutural notch at the base of the elytra, but, as a rule, is invisible, 

 being covered by the base of the pronotum when the latter is 

 tightly closed upon the elytral base, as usual in the Eusatti. 

 The five known species may be defined as follows : 



Prosternal lobe not margined apically, the upper surface more or less 

 shining, the elytral punctures muricateand never more than micro- 

 setulose 2 



Prosternal lobe margined continuously about its contour; sculpture 

 and vestiture variable. 3 



2 Form broadly rounded, very convex, rather shining in both sexes, 

 deep black; head finely rugose and opaque, with finer isolated 



1 Since this was written I have had an opportunity to study two of the original 

 cotypes of coquilletti, and have received an excellent photograph of the type from 

 the skillful hands of Mr. H. S. Barber, of the National Museum. It appears 

 that the transversality of the bottom of the apical thoracic sinus is by no means 

 so pronounced as might be inferred from the original description and that the 

 species is really closely allied to agnatus, from the same zoological region. It 

 differs in the more swollen reflexed humeri, causing the width of the elytra at 

 that point to be decidedly greater than that of the prothorax, as mentioned in the 

 description ; also in its slightly shorter and broader form, distinctly greater con- 

 vexity when viewed in profile from the rear, rather less feebly costulate and de- 

 cidedly more shining elytra, with the muricate punctures more distinct, and 

 finally in the more decidedly explanate sides of the prothorax. 



