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347. 

 OOMORPHUS CONCOLOR. 



Order Coleoptera. Fam. Byrrhidae Lat., Lea. 



Type of the Genus, Byrrhus concolor Sturm. 



OoMORPHUS Curtis. — Simplocaria Curt., Steph. — Phalacrus Steph. 

 AntewKc inserted before the eyes, remote, not longer than the 

 thorax, subclavate, pilose, 11 -jointed, basal joint the largest, 

 subovate, narrowed at the base, 2nd ferruginous, subconic notched 

 internally at the base, 4 following slender and oblong, the re- 

 mainder forming an elongated club, the 7th joint obtrigonate, 

 8th scarcely larger than the 6th 3 9th and 10th obtrigonate, 11th 

 ovate (6). 



Labrum subquadrate, the angles rounded, producing a few bris- 

 tles and 2 small tubercles beneath in front (1). 

 Mandibles subtrigonate, bifid at the apex, but not notched or 

 membranous on the inside (2). 



Maxilla: bilobed, internal lobe broad and rigid, thin on the in- 

 side, external lobe extending beyond the other, with a thin margin 

 on the inside and a few bristles at the apex. Palpi short, ro- 

 bust, pilose and 4-jointed, basal joint minute, 2nd broad, cup- 

 shaped, 3rd transverse, 4th ovate with a vesicle at the apex (3). 

 Mentmn, anterior portion subquadrate : Lip suborbicular and 

 transparent. Palpi robust, triarticulate, attached to large con- 

 tiguous scapes, basal joint minute, 2nd large somewhat obtri- 

 gonate, 3rd conical with a vesicle at the apex (4). 

 Head received into the thorax, short and obtuse: eyes rather reniform, 

 coarsely granulated. Thorax convex, subtrigonate, truncated before, 

 rounded behind, the angles rather acuminated. Scutellum extremely 

 minute. Elytra convex and ovate, the sides a little narrowed beyond 

 the middle. Wings imperfect. Legs alike short and robust. Tibiae 

 compressed, dilated, and partially clothed with long hairs : tarsi broad 

 very pubescent beneath, 5-jointed, ]st and 2nd joints obtrigonate, 3rd 

 bilobed, 4th minute, 5th elongate oval: claws minute (5 afore leg). 



Concolor Sturm's Deut.Faun.2. 109. tab. 35 A. — Curtis's Guide, 

 Gen. 298. 1. — maritimus Steph. 



Black, slightly aeneous, smooth and very glossy, sparingly but 

 rather coarsely punctured, excepting the head which has a long 

 fovea in front. Antennae with the 2nd joint ochreous. Elytra 

 with 8 rows of punctures on each, the sutural one not extend- 

 ing half way, and gradually approaching the suture, as well as 

 the 2nd, Tibiae slightly clothed with subochreous pubescence. 



In the Author's and other Cabinets. 



I LATELY observed that the Byrrhus concolor was so essentially 

 different to the Simplocaria^, that it would be impossible to 



