110 OTIORHTNCHID^. 



[Horn. 



and legs densely covered with cinereous and brown scales irregularly inter- 

 mixed. Length .16 inch; 4 mm. 



This species is relatively more robust than the preceding. It appears to 

 constitute a form intermediate between the genus Periorges and Coleocerus. 

 It is certainly not the female of dispar as suspected by Dr. LeConte. 



Occurs in Texas. 



ARAOANTHUS Sch. 



Aracanthus Schonh. Gen. Cure, v, 1, p. 821. 



Rostrum scarcely longer than the head, stout, parallel, finely canaliculate 

 above, tip feebly emarginate. Scrobes linear moderately arcuate, passing 

 immediately in front of the eyes beneath the head, and turning sliglitly for- 

 ward. Eyes transversely oval, pointed beneath. Submentum with a short 

 broad peduncle, not emarginate. Antennae moderate, scape gradually cla- 

 vate, attaining the middle of the eye; funicle 7-jointed, 1-3 longer, the first 

 longer than the second, 3-7 gradually shorter, slightly flattened; club oval. 

 Tliorftx slightly wider than long, ocular lobes prominent. Scutellum very 

 small, triangular. Elj'tra oval, very little broader than the thorax at base, 

 humeri rectangular. Mesosternum oblique, metasternum short. Intercoxal 

 process oval at tip. Abdomen normal. Anterior and middle tibiae feebly 

 mucronate, articular surfaces of hind tibiae terminal, not cavernous. Claws 

 free. 



This genus is closely allied to Eudiagogus, and differs in having the 

 thorax nearly as wide at base as the elytra; the scutellum very small, and 

 the peduncle of the submentum not emarginate. The genus was named, but 

 not characterized by Say. 



A. pallidus Say, Cure. p. 9; Compl. works, 1, p. 268; Schonh. loc. cit. 



Form oval, surface densely scaly. Head and rostrum not longer than the 

 thorax, canaliculate, moderately, densely, punctured, and moderately cov- 

 ered with scales of a cupreous lustre. Thorax slightly wider than long, 

 base arcuate, sides in front arcuate, posteriorly sub-sinuate, disc convex, 

 with coarse, rather closely placed punctures, surface densely scaly, scales 

 fuscous, sides and median line paler. Elytra oval, scarcely striate and 

 with rows of moderately large punctures not closely placed, surface densely 

 covered with cinereous scales, finely variegated with fuscous, and with 

 short, erect, whitish hairs. Body beneath and legs very sparsely scaly. 

 Length .12 inch; 3 mm. 



Many of the scales covering the surface have a slight cupreous lustre, es- 

 pecially those near the sides. 



Occurs in Texas and Missouri. 



EUDIAGOGUS Sch. 



Eudiagogus Schonh. Gen. Cure, vi, 1, p. 307. 



Rostrum as long as the head, stout, slightly narrower in front, alse very 

 feebly prominent, tip slightly notched, genae entire. Gu.la quadrangularly 

 emarginate, submentum pedunculate, and deeply emarginate, mentum 

 small, retracted. Eyes oval, pointed beneath. Scrobes narrow, well-de- 



