518 RHYNCHOPHORA. 
The mesosternum is depressed between the coxe. The type has been communicated 
by Dr. Heller. 
9. Chalcodermus collaris. 
Chalcodermus collaris, Horn, Proc. Am. Phil. Soc. xiii. p. 467 (1873) °. 
Hab. Norra America, New Jersey, Texas !.—MeExico, Vera Cruz (Sal/é). 
The three specimens from Vera Cruz referred to this species are inseparable from 
an insect from New Jersey sent me by Mr. Wickham under the name of C. collaris, 
Horn, the type of which was from Texas. Dr. Horn, however, in his brief descrip- 
tion, says nothing about the obliquely truncated, subangular humeri of the elytra. 
Compared with the very closely allied C. dentiferus, Faust, it has the prothorax rather 
less coarsely longitudinally strigose, and the elytra rufescent, with the humeri less 
acutely dilated and the coarse seriate punctures placed closer together. The meso- 
sternum is depressed between the coxe. 
8. Chalcodermus nigrozneus, sp. n. 
Suboval, slightly shining, nigro-sneous, the legs with a cupreous lustre ; clothed with scattered, small, hair- 
like, whitish scales. Head rugulosely punctate, the eyes well separated ; rostrum curved, moderately 
stout, about as long as the head and prothorax, seriate-punctate in its basal two-thirds, sparsely punctate 
at the tip, the antenne inserted before the middle. Prothorax transverse, rounded at the sides, abruptly 
narrowed and constricted in front and slightly narrowed behind, the base strongly bisinuate, the hind 
angles rather obtuse; coarsely, closely punctate, the punctures here and there confluent and on the 
anterior part of the disc separated by longitudinal rug, the disc with an almost obsolete median carina 
in front. Elytra much wider than the prothorax, gradually narrowing from the dentiform, laterally 
projecting humeri; coarsely seriate-punctate, the interstices flat and very minutely punctate (closely 
rugulose in one specimen). Mesosternum depressed between the cox. Legs stout; femora rugosely | 
punctate, unidentate; tibise punctato-sulcate, each subangularly dilated at or before the middle within 
and serrulate thence to the apex. 
Length 4-42, breadth (excl. tooth) 2,,-23 millim. (d.) 
Hab. Mexico, Teapa (H. H. Smith); Guatemata, San Gerénimo (Champion). 
Two specimens. This is a form of C. dentiferus with the prothorax closely punctate, 
and the longitudinal ruge not so coarse and mainly confined to the anterior part of 
the disc. In the example from Guatemala the elytral interstices are closely rugulose 
throughout. Ina series of C. dentiferus from Yucatan there is nothing intermediate. 
4, Chalcodermus cupreipes, sp. n. 
Very like C. nigroeneus, but cupreo-eneous in colour, the antenne ferruginous; the prothorax with the 
sides parallel at the base and rounded and a little dilated at the middle, the hind angles rectangular, the 
sculpture somewhat similar, except that the ruge between the punctures are oblique, instead of longi- 
tudinal; the elytra, legs, &c., as in C, nigrowneus and C. dentiferus. 
Length 43, breadth (excl. tooth) 23 millim. ( 9.) 
Hab. Mexico, Tapachula in Chiapas, Pacific slope (Hége). 
One specimen. Perhaps an extreme form of C. dentiferus ? 
