440 PHYTOPHAGA, 



shorter than the corresponding joints in the male; the elytra very strongly costate throughout; the 

 antennae shorter. 



Hab. Mexico, Cordova, Orizaba (Salle), Cerro de Plumas (Hoge). 



The dilated and elongate sixth joint of the antennas in the male will assist in the 

 recognition of A. godmani; the species seems to be subject to a good deal of variation 

 in colour, and I must refer the variety to the same insect, as I cannot see any structural 

 characters of distinction ; the specimens from Cerro de Plumas are smaller, entirely 

 fulvous, and have the elytral interstices very strongly costate. 



11. Allochroma coccineum. (Tab. XXV. fig. 14.) 



Allochroma coccineum, Clark, Cat. Halticidse, p. 184 \ 



Hab. Guatemala, Panima, Teleman (Champion). — Brazil *. 



The differences between the Guatemalan insects and the type, which I have before 

 me, are too slight to consider them as specific ; the sixth joint of the antennas in the 

 male insect shows the same thickening as that of A. godmani. Clark says nothing about 

 this in his description. The colour of the antennas and that of the legs is variable : in 

 the specimens from Teleman, the first six joints of the antennas and the legs are fulvous 

 like the entire insect ; in the specimen from Panima the antennas and the legs are 

 piceous ; in this last-named individual the elytra are finely punctured, and the interstices 

 flat, in the others the latter are distinctly convex, and the punctuation is deeper ; I 

 believe, however, that these differences may be taken for local variations. 



12. Allochroma mexicanum. (Tab. XXV. fig. 8.) 



Fulvous, glabrous; antennae (the two last joints excepted) black; thorax nearly impunctate ; elytra with a few 

 fine punctures below the base, and a spot before the middle of each, black. 



Length 3 lines. 



Head impunctate ; the frontal tubercles strongly developed and transversely shaped, bounded behind by a deep 

 transverse groove ; antennae not extending further than the base of the elytra, the second and fourth joints 

 short and of equal length, the third longer and more slender, the intermediate joints widened, the two 

 terminal ones fulvous ; thorax subquadrate, one half broader than long, the sides perfectly straight, the 

 surface almost impunctate, near the base on each side is a small shallow fovea ; elytra with a distinct 

 depression before the middle, finely punctured within this depression only, the rest of the surface 

 impunctate, costate from the prominent shoulders to the first third of their length, and with a transverse 

 black spot placed within the depressed portion ; underside and legs entirely fulvous. 



Hab. Mexico, Jalapa (Hoge). 



Similar in coloration to A. bimaculatum, but at once distinguished by the almost 

 entirely impunctate upper surface, and the colour of the antennas and legs. 



13. Allochroma biplagiatum. (Tab. xxv. fig. 16.) 



Black, glabrous ; the lower part of the face, the antenna?, the sides of the thorax, and the legs (the base of 

 the posterior femora excepted), testaceous ; thorax finely punctured ; elytra black, finely punctate-striate, 

 a round spot at the middle of each, obscure testaceous. 



Length 1| line. 



