COTTIEEA. 127 



2 • Elytra subgeminately punctate-striate, the interstices longitudinally costate. 



Yar. a. Above metallic green. 



Yar. 6. Antennae and legs black. 



Length 2 lines. 



Head distinctly and rather closely punctured ; anterior margin of the epistome straight ; labrum fulvous ; eyes 

 very large, convex ; antennae two thirds the length of the body, fulvous, the two terminal joints piceous ; 

 thorax transversely convex, its sides much and regularly rounded and narrowly margined, surface very 

 closely and rather finely punctured, a little more distinctly at the sides ; scutellum oblong, impunctate ; 

 elytra closely and regularly punctate-striate, the punctures much more strongly impressed than those of 

 the thorax ; the suture accompanied at its last half by an impressed line ; legs and tarsi entirely fulvous ; 

 anterior first tarsal joint moderately dilated in the male. 

 $ . The interstices between each two rows of punctures raised into very distinct longitudinal costae ; the ante- 

 rior tarsal joint elongate. 



Hab. Mexico, Panistlahuca, Cuernavaca, Istapan (SallS), Oaxaca, Juquila (Boucard, 



coll. Salle). 



Although in this species one of the characters peculiar to the genus in which I have 

 included it, the curved anterior tibia?, is absent, and the prosternum also of slightly 

 different shape, I feel scarcely justified in erecting another genus for its reception. 

 The differences do not seem of great importance ; and in other respects the insect agrees 



with the type. 



It seems to be a very variable species : in some specimens the thorax is copper- 

 coloured, in others blue ; the same may be said of the elytra ; while the general shape 

 seems equally variable, some specimens being more elongate than others : yet there do 

 not seem to me to be sufficiently important characters to separate them. 



2. Coytiera rugipennis. (Tab. VIII. fig. 16.) 



Narrowly oblong, greenish black below ; antennae and legs fulvous ; above bright metallic green or blue ; thorax 

 finely punctured ; elytra geminately punctate-striate, the interstices rugose and longitudinally costate at 

 the sides. 



Length If line. * ... 



Head rugose punctate ; epistome limited in front by two smooth elevated spaces ; labrum fulvous, its anterior 

 margin deeply concave ; antenme half the length of the body, filiform, fulvous, the four apical joints 

 piceous ; thorax transversely convex, sides rounded and entire, finely marginate, surface very closely and 

 finely punctured, a little more strongly at the sides ; elytra strongly geminate- punctate-striate, the inter- 

 stices everywhere transversely rugose, with about four longitudinal costae near the sides ; prosternum 

 broad, widened greatly at the base, the latter truncate ; legs fulvous. _ 



Ha b. Mexico, Tepanistlahuca (Salle), Jalapa {Edge). ; 



This small and very distinct species ought perhaps to be .placed in a genus of its own ; 

 but I find most of the characters peculiar to Coytiera present, the only difference 

 being the almost simple and straight tibiae and its small size. The rugosities of the 

 elytra can be noticed with the uaked eye. All the specimens from Jalapa, of which 

 one is figured here, are metallic blue ; and a single female has the elytra much more 

 rugose and longitudinally costate than the male. 



