Ijoiiqicornia of Me.rico and Central America. 250 



Ptericoptus fvscnn, Bates. 



Biologia C. A., Col., vol. v., p. 345. 



Hah. Mexico, Xiicnmanatlan, 7000 ft., and Amula, 

 nOOO ft., in Guerrero {H. H. Smith) ; Cuernavaca in 

 Morelos (Hoge). 



This species was described from a single Mexican 

 specimen, the precise locality of which was not known. 



Ecyrus arcuatus, sp. n. (PI. XII., fig. 2). 



$ . Brunneo cinereoqiie pubescens ; capitis fronte et vertiee 

 oehraceo-albis ; hoc postice leviter bituberculato ; elytris fascia 

 snbmediana transversim fortiterque arciiata, sordicle-alba, et antice 

 linea brevi nigra transversim arcnata ; utrisqiie lineis quatuor 

 breviter penicillatis. Long. 8 — 11 mm. 



Hah. Mexico, Temax in North Yucatan (Gaumer). 



This species resembles E. dasycerus. Say, but is somewhat 

 larger, and may be distinguished by the distinct backwardly-bowed 

 band of dirty white pubescence which crosses the elytra just in 

 front of the middle. In front of this band the elytra have a 

 brownish pubescence like that of the prothorax ; behind it they 

 are more or less cinereous. Midway between the band and the 

 base there is a short transversely ai'cuate black line. The elytra 

 are somewhat coarsely punctured, and each has (including the 

 sutural rows) four series of short backwardly-directed pencils of 

 fulvous brown hairs. The antennae of the female are a little 

 longer than the body, and have a thin fringe of greyish hairs 

 underneath ; on the inner ventral surface of the antennie near the 

 apex of the fourth and along almost the whole length of each of 

 the succeeding joints there are narrow, slightly depressed, longi- 

 tiidinal areas, over which the ordinary coarse pubescence is replaced 

 by exceedingly minute hairs. This character of the antennse, 

 which is met with also in the other two species* of the genus, and 

 is apparently common to botli sexes, recalls a somewhat similar 

 character which is to be found in the Ceroplesides. 



* Ecyrus exiguus, Lee, is (as was pointed out to me some time 

 ago by Dr. Horn) the male of Ecyrus dasycerus, Say. Though 

 the former is stated by TJiomson to be the type of his genus 

 (Ehacercs, the characters given for this genus bv no means apply 

 to it. Leconte's Ecyrus exiguus and Thomson's Qihaccres exiguus 

 are evidently two very distinct sjiecies, and neither seems to me to 

 be identical with the species which I find in the Dejeanian col- 

 lection under the name oi Exocmfrus exiguus, Dej. 



