TRIBE IV. XEXORCHESTIXI. 4." 



KEY TO GENERA OF XEA'ORCHESTIXI. 



a. Upper surface without punctures. XVIII. XEXORCHESTES. 



art. Thorax pimctured; elytra with irregular double rows of punctures. 



XIX. EUXEXUS 



XVITT. XENORCHESTES Woll., 1854. (Or., "strange"+Orchestes.) 



39 (9236). XENORCHESTES AMERICANUS Motsch., 1873, 251. 



Gibbose, acariform, narrowed in front. Dark brown or black, gla- 

 brous, shining, elytra with submetallic tinge; antennae and legs reddish- 

 brown. Head obtuse, eyes slightly flattened. Thorax in front as wide as 

 head, almost conical, wider behind, simply truncate at base. Elytra at 

 base as wide as thorax, ovate and dilated behind. Length 1.5 mm. 



Mobile, Ala., found on bushes. (Motsch.} Biscayne, Fla. 

 "Florida and Texas." (LcCoute.} 



XTX. EUXEXUS Lee., 1876. (Or., "beautiful" + ''host") 



LeConte states that the only evident differences between this 

 genus and the preceding are the punctured surface and less ovate 

 form of body in Eui-cnus. The species have the general appear- 

 ance of minute Cryptocephalids. Two species are known. 



40 (9237). EUXENUS PUNCTATUS Lee., 1876, 409. 



"Oval, very convex, slightly narrower in front. Brownish-black, gla- 

 brous, shining; sides of elytra piceous, legs and base of antennae testaceous. 

 Head feebly punctulate. Thorax slightly wider at base than long, gradually 

 narrowed from the base forward, apex broadly rounded, base nearly rectili- 

 near; disc deeply but not coarsely punctured. Elytra scarcely wider than 

 base of thorax and punctured similarly, except that the punctures are ar- 

 ranged in irregular double rows, with narrow intervening smooth spaces. 

 Beneath brownish, punctured; ventral segments short, equal. Length 1.2 

 mm." (LeConte.) 



Detroit, Michigan; Canada. District of Columbia, on twigs, 

 rare. (Ullcc.} 



41 (9238). EUXENUS PICEUS Lee., 1878, 434. 



Oval, rather elongate, convex. Dark reddish-brown, shining. Thorax 

 sparsely punctulate. Elytra punctured, the punctures forming indistinct 

 striae towards the sides; two outer striae distinct, the outermost extending 

 from the base for one-third the length, the inner one entire, marginal stria 

 entire. Length 0.6 mm. 



Tampa, Florida, April 11, on dry palmetto leaves. Lake 

 Poinsett, Crescent City and Haw Creek, Fla, on cabbage palmetto. 

 "Differs from /Hiiictdtiifi by the much smaller si/e, less distinctly 

 punctured thorax and by the legs being not testaceous but dark, 

 with onlv the tarsi vellowish." I LcCon/r.) 



