CHLAMYS. 81 



17. Chlamys pilatei. (Tab. V. fig. 8.) 



Ovate, narrowed posteriorly ; bronze-coloured ; antennae fulvous ; thorax punctate and strigose, with an acute 

 elevation, the latter deeply channelled posteriorly, blackish ; elytra reticulate from base to below the middle, 

 this portion velvety black, rest of the surface finely strigose. 



Length 1£ line. 



Head closely but rather finely punctate; antennae short, transverse from the sixth joint, fulvous ; thorax with 

 an acute and rather high elevation, the top of which is shaped into two points by the deep channel which 

 divides it, and which extends in a less deep groove nearly to the anterior margin ; the sides in front of this 

 groove are again more or less deeply longitudinally impressed ; when seen in certain lights the whole of 

 the raised portion appears of a velvety black, finely punctate and reticulate, while the sides are very finely 

 strigose and covered with irregular foveas and punctures ; scutellum very finely strigose ; elytra 

 bronze-coloured or greenish like the thorax, with the anterior portion, from the base to below the 

 middle, of a velvety black when viewed in certain lights, this portion reticulate, with two short oblique 

 ridges, one from the middle of the base, the other from the shoulder, and both joined together at 

 the middle of the disk ; the black part of the elytra further limited behind by a short oblique ridge near 

 the apex, the portion in front of the latter with two more or less distinct tubercles, finely strigose and 

 foveolate; pygidium with a distinct central raised line and another more indistinct one at each side, 

 deeply punctate throughout as well as the underside, the punctures of the latter resembling small 

 foveas. 



Hab. Mexico. 



The black-shaded thorax, want of the tubercles behind the elytral ridge, together with 

 the smaller size, distinguish this species from C. mcestifiea, Lac. ; while from C. mem- 

 nonia it may be separated by the closely reticulated disk of the elytra and the much less 

 distinct and more posteriorly placed oblique ridge of the elytra, which in G. memnonia 

 is joined by another, while here the second ridge is absent. 



18. Chlamys mexicana. 



Chlamys mexicana, Lacord. Mon. p. 745 1 ; Dej. Cat. ed. 3, p. 439. 

 Hob. Mexico 1 . 



19. Chlamys crassa. 



Chlamys crassa, Lacord. Monogr. p. 748. 

 Hab. Mexico, Tabasco. 



20. Chlamys luteola. (Tab. V. fig. 13.) 



Chlamys luteola, Germar, Ins. Spec. nov. p. 554 ; Klug, Ent. Monogr. p. 151, t. 10. fig. 8 ; Lacord. 



Mon. p. 752. 

 Chlamys signata, Koll. Monogr. Chlam. p. 44, t. 2. fig. 47 * ; Dejean, Cat. ed. 3, p. 439. 



Hab. Mexico, Orizaba (Salle). — Beazil, Eio de Janeiro \ 



Although the specimen from M. Salle's collection, which is figured here, differs some- 

 what from the Brazilian form (the latter country being as yet the only recorded habitat 

 of the species), the differences are not sufficient, in my opinion, to justify the separation 

 of the species. The thorax in the Mexican form is shorter, broader, and the posterior 



biol. cent.-amee., Coleopt., Vol. VI. Pt. 1, February 1881. m 



