118 c Mr. C. J. Gahan 07i neio 



colour, a narrow space bordering the posterior margin being 

 somewhat black. Pronotura (with the exception of a narrow 

 median space extending for a short distance from a little in 

 front of the base) stronglj and thickly punctured, especially 

 towards the sides, where the punctures are crowded together 

 to form a rugose surface ; sides subpai-allel or very slightly 

 diverging for about one third of their length from the base, 

 thence rather strongly converging to the anterior border. 

 Elytra strongly and rather closely punctured ; posterior 

 margin rounded and denticulate, with a slightly larger tooth 

 on each side where it joins the lateral margins. Mesosternum 

 projecting as a strong tubercle which is laterally compressed, 

 and at the tip smooth and keel-like. 



This species may be distinguished from H. minor ^ Bates, 

 which appears to be the most nearly allied form, by the 

 shortness of the female antennee, which extend only a very 

 short distance beyond the hind margin of the pronotum, and 

 by the prominence of the mesosternum, which, instead of 

 fitting evenly into the emargination of the prbsternum, 

 projects somewhat below it. The pronotum also is more 

 angulate at the sides and is more strongly and somewhat less 

 closely punctured on the middle of its surface. 



Gallichroma Batesij sp. n. 



C. cosmicn, Bates, Trans. Ent. Soc. 1872, p. 186. 



Viridi-metallica, supra atro-viridis ; pronoti vitta mediana, elytrorum 

 sutiira et vitta angusta utrinque viridi-nitidis, subglabris ; 

 prothorace utrinque fortiter acuteque tuberculato ; corpore subtus 

 viridi-nitido, vix pubcscente ; antennis pedibusque nigris, femo- 

 ribus anticis intermediisque (basi exceptis) testaeeis. 



Hab. Nicaragua, Chontales {Belt) ; Costa Eica, Guana- 

 caste {H. Pittier). 



This species was determined by Bates to be the C. cosmica 

 of White ; but in the latter species the prothorax has a blunt 

 tubercle on each side, which is feebly developed in comparison 

 with the strong and spine-like tubercle occupying the same 

 position in the present species. In C. cosmica the underside 

 has a distinct, though thin, silvery-grey pubescence, which is 

 easily seen in certain lights, and the lateral vitta of each 

 elytron is reduced to a narrow streak near the base. In 

 C. Batesi the underside of the body is almost impubescent, 

 and the lateral vitta of each elytron extends as a distinct 

 bright band from the shoulder as far as the apex. 



