192 Coleopterological Notices. 



cent ; anteiinre slightly shorter than the head, pronotum and elytra comhined, 

 Pronotum very slightly less than twice as wide as long, very feebly, transversely 

 convex, not distinctly impressed, with a series of wide-spaced erect setse along 

 the apical margin and thence along the sides to the middle, where they abruptly 

 terminate ; disk extremely sparsely pubescent, the hairs subrecumbent, very 

 minute toward the middle, longer and stiffer toward the sides, and posteriorly 

 to basal fifth, where they abruptly terminate in a transverse line parallel to 

 the base ; surface thence to the base glabrous, except a few minute hairs 

 along the fine paler semi-coriaceous posterior edge, extending anteriorly along 

 the sides to about tlie middle. Elytra polished, depressed ; sides straight, 

 feebly divergent from base to apex, almost exactly similar in form to the 

 pronotum, and almost imperceptibly longer, at base slightly narrower, very 

 sparsely clothed with rather stiff subrecumbent hairs, evenly but not regularly 

 disposed. Abdomen distinctly longer than the anterior parts combined, and 

 distinctly wider than the elytra ; sides arcuate ; ujjper surface almost glabrous, 

 except the wide depressed border which is very finely and indistinctly pubes- 

 cent ; under surface almost completely glabrous in the middle, but very finely 

 pubescent laterally. Length 1.8 mm. 



Colombia (Panama). 



In the male, which appears to be much more abundant than the 

 female, the sixth segment is very broadly rounded behind, the 

 middle of the apical marg-in truncate or excessively feebly incnr- 

 vate ; in the female this segment is broadly and feebly produced in 

 the middle in a v^ide broadly rounded lobe. The elytra also appear 

 to be very slightly shorter in the female. 



In dedicating this species to Mr. J. Beaumont, I wish to acknowl- 

 edge a strong appreciation of the patience and scientific zeal on his 

 part, which have led in so short a time to a decided advance in our 

 knowledge of the interesting and apparently greatly diversified ter- 

 mitophilous fauna of Tropical America. 



PERINTHIJS n. gen. (Aleocharini). 



Body nearly as in Myllaena, densely and very minutely pubescent. 



Head small, str(mgly deflexed, deeply inserted in a rounded apical emargl- 

 nation of the prothorax ; portion behind the antennye much wider than long, 

 not in til* least constricted at base, the latter covered by the pronotum ; sur- 

 face evenly, moderately convex. Eyes large, finely faceted, minutely, rather 

 densely setose, not prominent, rounded, occupying nearly the entire sides of 

 the head and, in repose, partially overlapped by the pronotum. Antenme 

 inserted in small foveae adjacent to the anterior margin of the eye on the 

 abruptly inclined and concave apical portion of the front — epistoma — which is 

 corneous and separated from the front proper by a transverse finely cariniform 

 line, wliich is sinuate behind each fovea, and anteriorly arcuate and more 



