256 Mr. C. J. Gahan's additious to the 



spined ; each with three very distinct costse, of which the inner- 

 most is much shorter than the other two. Legs of moderate 

 length, somewhat compressed ; the femora sHghtly dilated above 

 the middle. Prosternal process slightly arched. Metathoracic 

 epistevna narrowly truncate behind. Abdomen rather broadly 

 subtruncate at the apex ; each of the first three segments with a 

 large and sharply limited tomentose depression in the middle. 



This genus will be best placed in the group Mono- 

 desmince, of which it possesses all the essential cha- 

 racters. It may be easily distinguished from the other 

 genera belonging to this group by the structure of the 

 male antennae. The median tomentose depressions on 

 the first three abdominal segments of the male form a 

 character unique, so far as I at present know, among 

 the Prionidfc. 



Lasiofjaster costipcnnis, sp. n. 

 Nigro-fuscus sparse pubescens ; capite antennisque dense scabro- 

 soque punctatis ; prothorace dense minus valde punctate ; elytris 

 (sutnra margineque et costis tribus utrinque, fuscis, exceptis) 

 albido-testaceis, nitidis, sat dense punctatis, inter costas sub- 

 planatis vel longitudinaliter depressis. Long. 23, lat. 7.5 mm. 



Hah. British Honduras, Corosal {obtained from 

 Mrs. C. V. Wickham). 



The inner costa of each elytron begins at its basal margin, and 

 does not extend for more than about one-third of its length ; the 

 median costa arises in the basal depression above the shoulder, 

 takes a course backwards, at first directed slightly towards the 

 suture, and then almost parallel to the suture for the remainder of 

 its length, and ends at a short distance before the apex ; the outer 

 costa commences below and a little behind the shoulder, and ends, 

 like the median costa, at a short distance from the apex. 



DeHathis pulchra, Thorns. 

 Two additional examples, one from Trapiche grande, 

 Vera Paz {Conradt), the other from Escuintla, Guate- 

 mala {Conradt), agree with the Guatemalan specimen 

 placed in this species by Bates, in having a bluish grey 

 tomentum in the place occupied by the black and 

 ghibrous elytral vittfe of the ordinary form. In the 

 specimen from Escuintla the two yellowish tawny bands 

 of each elytron have widened out and coalesced along 

 the posterior half. 



