f^ 



135. 

 BYRRHUS DENNII. 



Order Coleoptera. Fam. Bynhidae Lat..^ Leach. 

 Type of the Genus Bj^rrhus Pilula Linn. 

 BvKRHUS Linn., Fab., Oliv., Panz., Sturm. — Cistela Geoff'., Marsh. — 

 Dermestes DeGeer. 



Antenna straight, not so long as the thorax, inserted before the 

 eyes, near the base of the mandibles, compressed, perfoliate- 

 clavate, 1 1 -jointed, basal joint large, 2nd small globose, 3rd long 

 slender, 4th shorter, 5th turbinate, 6th globose, 4 following 

 transverse-ovate, last large ovate (fig. G). 



Labrum transverse-ovate, pilose, slightly produced in front (1). 

 Mandibles small, trigonate, one bifid, the other subtrifid at the 

 apex, with a large tooth on the interior side, beneath which is a 

 deep notch and membranous appendage (2). 

 Maxilla coriaceous above, thickly ciliated, internal lobe narrow, 

 nearly as long as the external one. Palpi a little longer than 

 the maxillae, 4-jointed, basal joint minute, 2nd and 3rd of nearly 

 equal size, 4th larger (3). 



Mentum transverse, horny, slightly emarginate and ciliated. Lip 

 membranous dilated at the base, anterior part thick, fleshy, cor- 

 date, ciliated. Palpi arising from the upper surface of the lip 

 near the centre of each lobe, small, 3 -jointed, basal joint minute, 

 2nd clavate, 3rd subovate (4). 

 Head small, sunk in the thorax. Eyes small lateral. Thorax narrowed 

 before, posterior angles acute. Scutellum small. Elytra very convex 

 completely covering the abdomen. Wings 2 formed for Jiight. Legs 

 received into cavities in the abdomen. Tibiae compressed, spurred, 

 slightly serrated on the external edge, having a groove to receive the 

 Tarsi which are 5 -jointed, basal and terminal joints the longest, in- 

 termediate very short (5, afore leg). 



Dennii Kirby's MSS. 



Black clothed with subaureous pubescence. Thorax with 2 large 

 round spots before and 2 angulated ones near the middle black. 

 Elytra with a black sinuated fascia across the middle not extend- 

 ing to the exterior margin, each having 4 black longitudinal 

 stripes ; margin blackish. Antennae and legs castaneous, in- 

 clining to black. Beneath dull black. 



In the Cabinet of Mr. Kirby. 



