REVISION OF TENEBRIONID SUBFAMILY CONIONTIN^ 163 



Form oval, the hind body not inflated, the elytra deeply striate, the 

 sides of the prothorax fimbriate; habits fossorial. Atlantic Ar- 

 gentina. [Type Zophosis ttodosa Germ.] *Nyctelia 



Form ovoidal, the hind body much inflated, the elytra not striate; 

 sides of the prothorax not fimbriate ; habits non-fossorial. South- 

 ern Andes. [Type JV. explanata n. sp.] *Nyctelioma 



The body in Ny delta Latr., is smaller than in Nyctelioina 

 and there can be but little doubt that the habits are fossorial as 

 in Ccelus and other fimbriate species, including certain Praocids. 

 The t3''pe of Nyctelioma (n. gen.) may be described as follows : 



Form convex, deep black, glabrous, rather strongly shining ; head with 

 some scattered coarse punctures laterally, the surface broadly im- 

 pressed along the sides ; prothorax a little more than twice as wide 

 as its median length, densely aureo-fimbriate at apex and base, 

 the sides parallel and almost straight nearly to the middle, then 

 broadly i^ounding, becoming strongly converging and straight 

 anteriorly, the apical sinus transvei'se at the bottom, the angles 

 porrect, acute and well defined ; base strongly, evenly bisinuate, 

 the surface gradually and feebly convex medially, with some 

 sparsely scattered punctures apically and broadly toward the sides, 

 the marginal bead fine, obliterated behind the middle ; scutellum 

 wholly obsolete ; elytra dilated, oval, at the middle nearly a third 

 wider than the prothorax, a little longer than wide, produced at 

 tip, evenly convex, gradually and rather broadly explanate at the 

 sides before the middle, the margin thickened and rugose ; surface 

 smooth, even, with some small and widely scattered granules 

 which become lineate in arrangement suturally and apically ; 

 hypomera with some minute, sparse, setigerous granules, smooth 

 and polished, the prosternum smooth, becoming rugose medially 

 and throughout the process, the latter rounded and thickly though 

 feebly beaded about its entire contour. Length 17.5 mm. ; width 

 II. 3 mm. Argentina (Mendoza) *explanata n. sp. 



The above species is allied to latissima BL, but differs in 

 having no trace of undulation along the sides of the elytra. Of 

 a species called latissima Bl., Mr. Rolle sent me a considerable 

 number of examples which differ among themselves in very 

 confusing manner, showing that the delimitation of species in 

 this genus is fully as difficult as in any part of Coniontis. 



II. 



Dr. Georg Seidlitz (Ber. wiss. Leist. Ent., 1905, p. 162), 

 finds some fault with my recent papers because of the omission 



