402 WILLIAM G. DIETZ, M.D. 



AUL.EIJTES gen. nov. 



This geuus is distinguished from Oeliodes by the formation of the 

 ventral segments. Tlie beak is rather stout, feebly curved and cy- 

 lindrical. Eyes moderately convex, rarely (epilobii) more promi- 

 nent, with elevated orbital margin, partly or entirely concealed in 

 repose according to the development of the prothoracic lobes ; pro- 

 thorax evenly convex, lateral tubercles distinct ; scutel distinct in 

 some, not visible in others. Elytra somewhat suddenly wider at the 

 base than the prothorax, striato-punctate ; pectoral canal deeply ex- 

 cavate, sharply limited laterally, extending upon the metasternum, 

 more rarely to the mesosternum only ; middle coxse more widely sepa- 

 rated than the anterior and never very closely approximate to the 

 latter ; second ventral segment shorter than the two following united, 

 the third narrowed at the sides, not or narrowly attaining the lateral 

 margin. Legs generally slender, middle and posterior tibije emar- 

 ginate above the apex ; tarsi variable. 



The species are dark colored insects, thinly clothed with a fine 

 squaniiform pubescence. I have divided them according to the for- 

 mation of the metasternum into two groups, as follows : 



Metasternum distinctly excavate and emarginate, forming the posterior limit of 

 the pectoral sulcus. Elytra evidently roughened (except epilobii). PI. xii, 

 fig. 14 Group I. 



Metasternum not, or very feebly emarginate, not entering into the formations of 

 the pectoral canal. Elytra not asperate. PI. xii, fig. 14« Group II. 



Group I. 



Contains the larger number of species, which, while exhibiting 

 considerable differences in structure, agree in having the metaster- 

 num emarginate and more or less excavate. The elytra are rough- 

 ened in nearly all by tubercles, or small, acute granules. 



The species are distinguished as follows : 



Anterior and middle tibiis not subangulate near the base, eyes not prominent, 

 front not concave. 

 Larger species, claws armed with a long, slender tooth, almost bifid, protho- 

 racic lobes feeble, eyes only partially concealed in repose. 

 Funicle T-jointed. 



Alternate clytral interstices wider and more conspicuously tubcrculate. 

 Larger, prothorax less coarsely i)unctured, anterior tibise curved, slender, 



elytral tubercles small. PI. xii, fig. 15 curvipcs. 



Smaller, j)rothorax coarsely punctured, anterior tibiie straight, elytral 



tubercles large, distinct. PI. xii. 15a as|>er. 



Interspaces equal, or nearly so; i)rothorax coarsely punctured. 



