200 GEORGE H. HORN, M. D. 



Punctures of elytra in fairly regular rows, very little confused near the suture, 

 elytra dull ocbreous, with large piceous spots; front femur of male with a 

 well marked tooth vagaiis. 



Punctures of elytra very confused, with a feeble seriate tendency near the sides ; 

 elytra usually dull ochreous with piceous spots, sometimes the entire surface 

 is fulvous ; male with a feeble denticle on the front femur. deceniiiotsita. 



Punctures of elytra much finer than in the preceding species, and arranged in 

 quite regular series, but slightly confused near the suture ; color usually pale 

 fulvous, but varying through brown to piceous, but not maculate; front 

 femur of male with a small denticle villosula.. 



X. vagaiis Lee. {Tricotheca), Trans. Am. Ent. Soc. 1885, p. 26. 

 Larger than the other species, and resembling in coloration de- 

 eemnoiata. 



Occurs in Texas and southwestern Utah. 



X. cleeeiiiiiotata Say {Pachnephorus), Jouru. Acad, iii, p. 445; edit. Lee. 

 ii, p. 213. 



The general color is dull ochreous with darker legs. The elytra 

 have piceous spots, which are more or less confused, arranged as 

 follows : a spot on each urabone, a second within this, a common 

 elongate sutural spot in front of the middle, on each side of which 

 are three linear spots ; posterior to these latter are three other linear 

 spots. 



Specimens quite frequently occur with the entire surface ochreous 

 without spots. These may be known from villosula by the coarser 

 punctuation of the elytra, very irregularly placed. 



Occurs over a wide extent of the eastern United States and Canada, 

 extending to Texas ; not yet known from Florida. 



X. villosula Mels. (Eumolpus), Proc. Acad, iii, p. 169; Steve7mi Baly, .Tour, 

 of Ent. ii, 1863, p. 151. 



Fulvous, varying through brownish to piceous, but never with 

 evidence of defined spots. Antennae always pale, legs never piceous, 

 usually paler than the general color of the body. Elytra with finer 

 punctures than in decemnotata, which are arranged in very regular 

 rows except near the scutellum. The pubescence seems more per- 

 sistent than in the other two species. 



The name plagiatus Mels. quoted by Lefevre, under Myochrons, is 

 merely a variety of this species with the indeterminate fuscous cloud 

 on the elytra, as stated by Melsheimer. 



Occurs from Canada through the eastern United States to Georgia, 

 Texas and Arizona. 



