12 



GEO. H. HORN, M. D. 



D. flavicoruis Guerin. — Form cyliudrical, moderately robust, attenuate 

 at posterior third only, dark brown, opaque, moderately densely clothed with 

 yellowish cinereous pubescence ; antennae yellowish in color, 

 scarcely passing the hind angles of the thorax ; head densely 

 roughly punctured, front rather flat, a distinct rounded de- 

 pression between the bases of the antennae ; clypeus very 

 little narrower at base, the anterior border truncate at mid- 

 dle ; thorax broader than long, sides nearly straight, very 

 little narrower in front, slightly arcuate at the anterior an- 

 gles, disc moderately convex, with a slightly marked line at 

 the middle of the base and on each side a short oblique im- 

 pressed line, surface rather densely rugose ; elytra narrower 

 at apical third, without traces of striae, but with feeble traces 

 of oblique impressions, surface densely rugose, but more 

 finely than the thorax ; prothorax beneath densely rugose, 

 the metasternum and abdomeu less coarsely rugose ; last ventral segment com- 

 pressed on each side terminating in an obtuse point. Length .32 - .48 inch ; 

 8-12 mm. 



The only specimen I have ever seen of this species is in the cabinet 

 of Dr. LeConte, obtained by him from some European collection. 

 It seems to be excessively close to bombycina found in Columbia, S. A., 

 and this in conjunction with the fact that forty-two years have elapsed 

 since its description without others having been found, makes me 

 look upon the species as rather doubtful. 



Occurs at Savannah (Bonvouloir). 



STETHOX Lee. 



Form cylindrical, rather robust, slightly narrower behind ; antennae very little 

 longer than the head and thorax, compressed, diflFering in the two species in the 

 proportions of the joints; head convex, deeply inserted; clypeus very little nar- 

 rowed at base, much broader than the distance to the eyes, apical margin trun- 

 cate, or feebly emarginate ; prothorax wider than long; elytra parallel, narrowed 

 at apical fourth ; prosternum rather short in front of the coxae, the sutures 

 deeply impressed, distinctly arcuate (pectorosus), or very feebly arcuate (errans), 

 propleural triangle nearly equilateral, the antennal grooves marginal, deep, nar- 

 row, closed behind and with parallel sides ; metasternal episterna very narrow, 

 parallel; a slight longitudinal impression beginning at the outer side of the 

 coxae ; hind coxal plates broad and dilated internally ; legs moderate, tarsi fili- 

 form, the first joint as long or longer than the next four, fourth joint simple ; 

 claws simple ; last ventral segment more or less prolonged at apex. 



With the typical species (pectorosus) above there would be no 

 difficulty in easily distinguishing the genus from almost every other 

 in the Eucnemine series by the strongly arcuate prosternal sutures, 

 but the second species shows a strong tendency to revert to the form 

 usual in the series. Excluding the prosternal sutures from considera- 



