1880.] PHYTOPHAGOUS COLEOPTKRA, 173 



first sight recognized by the white frontal patch of the head, which 

 is peculiar to all the species at present known. Von Harold has 

 pointed out recently the other distinguishing characters, as the 

 elongate metatarsus, the little-developed encarpse, and the not 

 tooth-like produced anterior angles of the thorax. 



14. HoMOPH(ETA AFFINIS, Sp. nOV. 



Elongate, subparaUel. Black beneath ; above yellowish white, more 

 or less intermixed with rufous j a spot before and another below 

 the middle dark brown. 



Length 4-4 1 lines. 



Had. Capetillo, Duenas, Guatemala. 



As this species resembles in most respects H. militaris, it will be 

 sufficient to point out the differences only. 



The antennse in the present species are more robust, the joints 

 less elongate and filiform ; the thorax has the anterior angles greatly 

 thickened, and the sides are much more distinctly margined than in 

 H. militaris ; the elytra are more convex in the latter species as well 

 as dilated, while in the present insect they are more parallel. The 

 spots on the same parts are also differently placed and of different 

 shape, the basal spot of H. militaris having its place in H. affinis be- 

 fore the middle and nearer the suture, at the same time being obliquely 

 shaped and, as well as the posterior one, of a brown instead of a 

 black colour. The rufous colour is more visible near the base and 

 lateral margins, not extending so much near the suture as in mili- 

 taris. In other respects there is no difference between the two 

 insects. 



Collections of Godman and Salvin and Jacoby. 



1.5. HoMOPHCETA BiT^NiATUs, sp. hov. (Plate XVIII. fig. 3.) 



Elongate, parallel. Flavous ; breast, legs, and antennse black ; 

 above shining purplish or bluish black ; thorax and two transverse 

 bands on the elytra yellowish white. 



Length 3| lines. 



Hab. Cayenne, Bolivia. 



Head black, with the usual light frontal patch and the clypeus of 

 the same colour, sparingly punctate near the eyes ; labrum and palpi 

 flavous, the former with a few long white hairs ; antennse as long as 

 half the body, with the third joint the longest ; basal joint flavous 

 beneath. Thorax three times as broad as long ; sides nearly straight 

 at the base, rounded towards the apex ; lateral margins greatly 

 thickened at the anterior angles, the latter produced to nearly the 

 extent of the eyes ; anterior and posterior margins straight ; surface 

 impunctate. Scutellum black. Elytra parallel, not visibly punc- 

 tured, of a splendid dark purplish or bluish colour, with a very 

 regularly-shaped transverse band in the middle, and another nar- 

 rower one, slightly curved, near the apex, light flavous. Breast and 

 legs (base of the latter being sometimes flavous) black ; abdomen 

 flavous. 



Collection of Jacoby, 



