438 PHYTOPHAGA. 



the legs are either black or fulvous ; in the type, as well as in all the other specimens 

 before me, there is a longitudinal costa, well marked, placed at the sides, commencing 

 from the shoulder and extending to below the middle, of which Clark says nothing. 



5. Allochroma hogei. 



Fulvous ; intermediate joints of the antennae black, the sixth joint long and thickened ; thorax scarcely punc- 

 tured ; elytra fulvous, a spot at the base and a longitudinal band from the middle to the apex of each 

 black. 



2 • Antennae simple ; elytra longitudinally costate. 



Length 2-2\ lines. 



Eab. Mexico, Cerro de Plumas, Jalapa {Edge), Cordova (Salle, Edge). 



It will only be necessary to point out the differences between A. hogei and A. festivum, 

 which at first sight seem identical : in the male of A. hogei the sixth joint of the antenna? 

 is greatly thickened and elongate (as is the case with other species described and included 

 in the present genus), the thorax has only a few very fine punctures, and is more trans- 

 versely shaped, and the elytra are more closely and finely punctured ; the female of 

 A. hogei differs from that of A. festivum in the closely and distinctly costate interstices 

 of the elytra, resembling in that respect A. godmani, which may possibly be only a 

 unicolorous variety of the present species, since specimens of both were obtained at the 

 same locality (Cordova). 



6. Allochroma balyi. (Tab. XXV. fig. 5.) 



Allochroma balyi, Clark, Cat. Halticidse, p. 187 \ 



Eab. Mexico [coll. Bali/), Cerro de Plumas (Edge), Juquila (Salle). — 1 South 

 Ameeica 1 . 



This is a handsome species with black elytra, the latter being marked with two large 

 yellow spots ; the head, thorax, and the underside, as well as the posterior legs, are 

 rufous, the anterior legs less piceous. There are several errors in the description given 

 by Clark of this species ; in the diagnosis the posterior femora are given as flavous, in 

 the description following they are called black ; neither is right, the colour is fulvous or 

 rufous. Clark gives as the locality, " South America " ; the only specimen contained in 

 Mr. Baly's collection, from which the description was drawn, bears the label " Mexico," 

 which is no doubt the right locality, as proved by the specimens obtained by Herr 

 Hoge and M. Salle. 



7. Allochroma bimaculatum. (Tab. xxv. fig. 6.) 



Allochroma bimaculata, Jacoby, P. Z. S. 1879, p. 784 \ 

 Eab. Nicaragua x ; Panama, Bugaba (Champion). 



The specimen obtained by Mr. Champion is a female, and differs from a specimen of 

 the other sex, contained in my collection, in the much shorter posterior femora, the 



