THE COMB-CLAWED BARK BEETLES. 1273 



iiariMwcr lluiii ft'iii:il(> .iiid with fdm' basal joints of front tarsi strongly 

 IhIkmI hciKMlli. I'niKilc with tiiriH' basal joints of front tarsi sinipU'. tlu* 

 I'oinili stroiii.'^ly lobcd. Lcii.mli it 10 mm. 



Tliroiiiiliout tlio State; scarce. June 12-Aufjjust 11. Occurs on 

 dry twigs and boneatli bark. 



.,^1. (ifra Say. black, sliiiiiiio-, tarsi pab'r, Icii'jtli 7.") nun., is a inctn- 

 bcr of tlic Allcu'liaiiiaii fauna. 



IT. llvMEXORi'S Mills. 1851. (Gr., "iueui!)rane i margin.") 



Smaller oblong or oval si)ecies, liaving the last .joint of maxillary 

 palpi in the form of a right angled triangle with the apex and outer 

 sides subequal in length ; lobes of the tarsal joints less developed 

 than in Allecula, the front and middle tarsi never having more than 

 two joints lobed and the hind tarsi with but one. Seven species 

 have been recognized from Indiana, Avhile another may occur. 



KEY I'O IM)IAN.\ SPECIES OF UYMENORl'S. 



(/. Thorax sparsely an<l usnally rather Hnely itnnctured ; ni>iicr snrface 

 shining. 

 b. Third antennal joint of male (mhuiI or subeiiual in length to fourth, 

 c. Elytral stri:o obsolete toward the apex. 

 (/. Elytra with a large reddish spot each side at base; length 4.5 mm. 



nUMEK.\l.IS. 



(hi. Elytra uniform in color throughout. 



e. Femora dark brown, tibiie and tarsi paler ; antenuiu one-half 



as long as body ; larger, 7-S mm. 2355. pilosus. 



ee. Femora reddish-yellow, tibia' darl^er; antenujF two-tifths the 



length of body; smaller, 5-0 mm. 235C). nioeu. 



(■('. Elytral stria' distinct to ape.x: ; antennae and legs reddish-bi'owu. 



2"!57. MEI.SIIETMERI. 



hh. Third antennal joint at male distinctly shorter than fourth. 



/. Antenna' fully one-half as long as bod.v. the third joint of male two- 

 thirds the length of fourili; tiioi'ax narrower than base of ely- 

 tra, coarsely punctured. 2358. pebforatis. 

 //. Antemup shorter, abnut two-hfths the length of body, the third 

 joint of male but slightly longer than second; thorax at base 

 equal in width to elytra. 2.35t>. obscubis. 

 (Id. Tliorax densely and i-athcr coarsely iiunctured; uiiju'r surface less shin- 

 ing. 

 (J. Antenna^ stout, third and fourth joints subeiiual; eyes large in male, 

 separated by a distance less tlian one-third their width; piceous- 

 black throughout. 2300. uiscretls. 

 (/(/. Anteinia' slender, third joint distinctly longer than fourth; eyes 

 smaller, always separated by more than half their width; elji:ra 

 piceous or dark reddish-brown, the head and thorax usually darker. 



2301. DENSUS. 



