430. 

 HYPOPHL^US BICOLOR. 



Order Coleoptera. Fam. Tenebrionidas. 



Type of the Genus, Hypoplilseus castaneus Fab. 



HvpopuL^us Fab., Lat., Fanz., GylL, Curt. — Ips OUv. 



AntenncE inserted in a cavity before the eyes, shorter than the 

 thorax, clavate pilose and 1 l-joitited, basal joint strangulated in 

 the middle, 2nd minute, 3rd oblong, 4th subglobose, the re- 

 mainder larger and cup-shaped but compressed, both sides having 

 a serrated appearance, terminal joint the largest and ovate (6). 

 Labrum exserted, transverse-oval, the margin ciliated (1). 

 Mandibles elongate-trigonate, slightly hooked and pointed, one 

 simple, the other with a partial margin on the outside, a small 

 tooth beneath the apex and a short membranous and ciliated 

 margin below it (2). 



MaxillcB short, terminated by a large lobe, pubescent at the apex, 

 ciliated externally ; internal lobe small and long, dilated and 

 ciliated at the apex. Palpi short rather stout and 4-jointed, 

 basal joint small, 2nd and 3rd subovate, 4tli the largest, some- 

 what securiform, but truncated very obliquely (3). 

 Mentum dilated and rounded before : Palpi arising from the 

 anterior margin, not very remote, rather short and stout, tri- 

 articulate, basal joint a little curved, 2nd obovate, truncated 

 obliquely, 3rd longer, ovate-conic. Lip large and broad, ciliated 

 with a few bristles (4). 

 HeViA rather small : eyes small but prominent and oval. Thorax o6- 

 long convex : scutellum minute. Elytra very long convex and ellip- 

 tical. Wings ample. Legs short : thighs slightly notched beneath 

 near the apex : tibise compressed, gradually narrowed to the base, 

 spurred: tarsi 5-jointed, posterior 4-jointed, all the joints short, ex- 

 cepting the last which is long and clavate : claws simple and hooked 

 (5 afore leg, 5 f hind leg). 



BicoLOR Oliv. 2. No. 18. pi. 2./. 14.— Curt. Guide, Gen. 252. 2. 

 In the Author's and other Cabinets. 



This little group is allied to Tenebrio (^jZ. 331.) on the on 

 hand, and probably to Rhizophagus on the other; but al- 

 though it has the habit of an Ips, it is certainly in no way re- 

 lated to that genus. 



Like those insects, the Hypophlaei live under the bark of 

 trees where they breed ; but in this country they are by no 

 means common. //. bi color was not known to Mr. Marsham 



