452 PROCEEDINGS OF THE NATIONAL. MUSEUM vol. loi 



4. Each elytron with a well-defined black velvety spot, which occupies a more 



or less depressed area 5 



Elytra without well-defined velvet}' spots; sometimes with colors that change 

 when viewed from different angles 8 



5. Dorsally slaty blue; head, antennae, and legs yellowish; each elytron with an 



elliptical basal velvety black spot; suture apparently without teeth (teeth 



visible only on open elytra) (Mexico) pavonina (Lacordaire) 



Dorsally grayish, not or very little shining and darker than in preceding 

 species 6 



6. Discal area of elytra with deep fovealike punctures; each elytron with an 



anterior elliptical velvety area; underside and legs (except tarsi, which are 



yellow), black (southern Brazil) achardi Monr6s 



Discal punctures of elytra not deeper than elsewhere; deeper punctures 

 appear only in velvety spots 7 



7. Elytral suture with small teeth; legs black, tarsi yellowish (Brazil). 



sericans (Lacordaire) 

 Elytral suture without teeth; legs yellowish brown exsula Monr6s 



8. Underside, head, and legs ferrugineous; thorax slaty gray, opaque; basal half 



of elytra blackish, apical half bluish and shining (Panama) (no specimens 



seen) godmani ( Jacoby) 



Ventrally and dorsally of same color ; legs and head sometimes yellowish 9 



9. Suture toothed. Head slaty gray like rest of body; antennae and legs 



orange-yellow. Each elytron near suture and in middle of its length with 



a short and feeble sliining transverse ridge (Brazil) nicki Monr6s 



Suture without teeth 10 



10. Head unicolorous, cupreous greenish, like rest of body; antennae and tarsi 



yellowish brown (Brazil, Mexico?) hydropica (Lacordaire) 



Head bicolorous ; ventral half yeUow ; rest of body obscure 11 



11. Legs entirely yellow; rest of body unicolor slaty bluish, moderately shining 



(Mexico) amoena (Lacordaire) 



Only the tarsi orange-yellow. Rest of body leaden gray with moderate 

 violaceous sheen at sides. Elytra without shining transverse ridge (Costa 

 Rica) freyi, new species 



MEUTTOCHLAMYS FREYI, new species 



Figure 85, b 



Very similar to M. nicki Monros, 1948, from which it may be dis- 

 tinguished by having tibiae and femora of the same color as the rest 

 of the body, by having the ventral half of the head dark brown, and 

 by having different elytral sculpture, 



Pronotum.- — Of semicircular form when seen from above, with its 

 basal margin prolonged in a long posterior lobe, the top of which is 

 not incised; regularly convex and without a central area that is 

 distinctly separated from the laterals; seen from the side, the notal 

 profile regularly arched; pronotal surface finely shagreened and with 

 a few small circular superficial punctures, denser in the posterior lobe. 



Scutellum. — Rectangular, its angles rounded, plain, and finely 

 shagreened. 



Elytra. — Apparent margins scarcely narrowed toward the apex, 

 where they are broadly rounded; suture without teeth; the whole sur- 

 face shagreened and with elongated punctures; scarcely developed 



