82 PHYTOPHAGA. 



elevation less developed. The punctuation of the elytra is also less elose, and the trans- 

 verse tubercle of the latter is placed further backwards. Allowance being made, in a 

 variable group like the present, for variation and local difference, it would not be advisable 

 to make it another species, unless more specimens confirm the difference between the 

 Brazilian and Mexican forms. 



21. Chlamys stigmula. (Tab. II. fig. 25.) 



Chlamys stigmula, Lacord. Mon. p. 736 \ 



Hob. Mexico 1 . 



The figure represents a Mexican specimen from the collection of Mr. Baly. 



22. Chlamys femigata. (Tab. V. fig. 5.) 



Chlamys ferrugata, Lacord. Mon. p. 762 * ; Dej. Cat. ed. 3, p. 440 2 . 

 Hab. Mexico, Juquila, Cordova, Playa Vicente (Salle). — Beazil 12 . 



This species has as yet only been recorded from Brazil. The Mexican forms before 

 me show but slight variations from the southern ones ; they are a little smaller, and the 

 thorax is slightly longer. This species shows two distinct longitudinal depressions, one 

 near the suture, and divided by a short transverse ridge into two parts, the other near the 

 lateral margin in the middle of the elytra. The interior of these depressions is much 

 more darkly marked than the rest of the surface. In the Mexican specimen the under- 

 side is more or less mottled with black, and the legs are spotted with the same colour. 

 Lacordaire remarks that Chevrolat's type was sent to him as having come from Mexico ; 

 but he regards this statement as erroneous, as Dejean has given Brazil as the true 

 habitat. The specimens in M. Salle's collection prove that Chevrolat's statement was 

 true, and that the species, like several others, has a wide geographical range. The figure 

 represents a specimen from Cordova. 



23. Chlamys gnatho. 



Chlamys gnatho, Lacord. Mon. p. 766 1 . 

 Hab. Mexico, Tabasco 1 . 



Lacordaire's description of this species was made from a single specimen, and founded 

 upon an extraordinary development of the left mandible, as well as upon the different 

 sculpture of the elytra. As regards the first character, I have a specimen before me 

 which I must certainly refer to C. ferrugata, which shows the same great development 

 of its left mandible, while the other character is absent. It is therefore somewhat 

 doubtful whether Lacordaire's species can stand as a good one, more specimens being 

 required to settle the point. 



