632 Goleoplerological Notices^ VII. 



raised line at some distance from the side margin, near which line externally 

 there is a short longitudinal groove; inner raised line of ornata extremely 

 feeble and not distinct much beyond the middle; middle parts toward base 

 with two feeble longitudinal depressions; sculpture dense and indistinct. 

 Scutellum small, transversely subquadrate. Elytra fully ^^ longer than wide, 

 3 times as long as the prothorax and nearly }4, wider; sides straight and 

 parallel, the apex semicircular; surface of each with four fine entire ridges, 

 separated by double series of rather coarse close-set punctures, the sutural ele- 

 vation bifurcate toward base. Under surface dark red-brown, with short, 

 coarse and rather sparse reclined hairs, the legs short and paler in color. 

 Length 2.3-2.8 mm. ; width 0.65-0.85 mm. 



Arizona (Yuma). 



Rather abundant in the lower valley of the Colorado River. It 

 is allied closely to ornata, but differs in its narrower form, suffused 

 coloration of the elytra, less distinct ridges of the pronotum and 

 in its much larger eyes. 



The name Bitoma is used on the authority of Dr. Sharp, though 

 according to Seidlitz (Faun. Bait, ii, p. 234), it was applied by 

 Herbst to the Fabrician Lyct.us; if so, Ditoma 111., will be the 

 proper designation of the present genus. 



EUCICO^ES Sharp. 



The species at present in our lists under the name Cicones 

 lineaticollis Horn, differs generically from marginalis in having 

 the upper surface feebly costulate and devoid of erect bristles, 

 and in having a distinctly biarticulate antennal club. The genus 

 has been named Acolobicus by Dr. Sharp, and the Mexican species, 

 obscurus Shp., seems to be extremely closely related to lineaticollis. 



Cicones marginalis is also regarded as generically different from 

 Cicones, and must be known henceforth as Eucicones. 



The material in my cabinet appears to indicate two species, 

 which may be separated on the following general characters: — 



Body more than twice as long as wide, subparallel, the elytra relatively more 

 broadly reflexed at the sides, with the humeri quite broadly rounded. 



niarginali§ Melsh. 



Body not more than twice as long as wide and much more dilated behind, the 

 elytra more narrowly reflexed at the sides, with the humeri much less 

 rounded ; clavate bristles finer lattis n. sp. 



The upper surface of the body in Eucicones is alwaj^s varie- 

 gated with small irregular paler spots. The genus extends far 

 into Mexico, from which region the generic type has been recently 

 described by Dr. Sharp. 



