CHALCOPHANA. 157 



From C. cincta the present species may be known by the shape of the fulvous band 

 of the elytra, which extends not only in a transverse, but also in a longitudinal direction 

 along the posterior part of the suture ; the male seems to have the thorax much more 

 closely punctured, the elytra deeply and rather irregularly punctate-striate, while in 

 the female these parts are more distinctly punctate-striate and the interstices sub- 

 costate ; the usual triangular dilatation of the anterior tarsi in the male is also present 

 here; and one specimen belonging to the latter sex from Mexico, which is before me, 

 shows the following differences : the eyes are more prominent and larger, the antennse 

 rather shorter and much more robust ; and the thorax is more closely punctured : but 

 as I have only this one specimen to compare, I am not able to decide upon its specific 

 value. In all the Guatemalan specimens, which are females, the fulvous colour occupies 

 a much greater space of the elytra at the apex, reducing the green portion to a 

 more or less oblong or rounded spot ; while in one specimen, which, by its sculpturing, 

 evidently belongs to the present species, the transverse band is entirely absent, the 

 margins and apex only being fulvous. 



5. Chalcophana mutabilis. (Tab. VI. figg. 22, 23, 24.) 



Chalcophana mutabilis, Harold, Coleopt. Hefte, xii. 1874, p. 75 \ 



Hab. Mexico, La Parada, Oaxaca (Salle); Guatemala, Zapote, Las Mercedes, 

 El Zumbador, Panima, Tamahu, San Geronimo (Champion); Nicakagua, Chontales 

 (Janson, Belt) ; Costa Rica 1 , Volcan de Irazu, Cache (Rogers). 



This is a most variable species in regard to colour, being either entirely fulvous or 

 dark blue, with the apex and margin of the elytra fulvous, while others have two 

 larger or smaller blue spots on each elytron. The species may, however, be known by 

 the sculpturing of the elytra, which consists of double rows of fine punctures, the female 

 having three distinct lateral costee at the sides and a deep transverse depression below 

 the base : these costa> are absent in the male ; but a deep oblique longitudinal depression 

 in front of the shoulders indicates the position of the principal costa. The constant 

 characters in both male and female seem to be the almost or totally impunctate head 

 and thorax, the first three rufous joints of the antennse, and the colour of the tibiae, 

 which are either entirely black or rufous at their bases only. I have before me from 

 Chiriqui one specimen which exactly resembles C. cincta in coloration, except that the 

 fulvous elytral band is very narrow and straight ; but the characters pointed out above 

 are all present here, and prove it to belong to the present species ; specimens with 

 metallic-green elytra have also been received from the latter locality. 



6 Chalcophana wagneri. 



Chalcophana wagneri, Harold, Coleopt. Hefte, 1874, p. 72 2 . 

 Hab. Guatemala 1 ; Nicaeagua, Chontales (Janson, Belt). 



