160 PHYTOPHAGA. 



12. Chalcophana mexicana. 



Chalcophana mexicana, Baly 1 , Trans. Ent. Soc. 1881, p. 499 . 

 Hah. Mexico 1 . 



The typical specimen, which I have examined, is a male, and cannot be mistaken for 

 any other, on account of the purplish-blue elytra, which have their outer margins 

 narrowly rufous, but not their apex, as is the case with so many other species ; the 

 punctuation is close and fine, with occasional traces of double lines. Only a single 

 specimen is contained in the collection of Mr. Baly. 



13. Chalcophana godmani. (Tab. VII. fig. 10.) 



Narrowly oblong, fulvous or rufous below; antennae (their three basal joints excepted) and the apex of the 

 tibise and tarsi black ; thorax impunctate ; elytra metallic green, their lateral margin and apex fulvous, 

 strongly punctate-striate. 



$ . Larger; elytra geminate punctate-striate, the sides with four abbreviated costae. 



Var. a. Light fulvous with a greenish gloss. 



Var. b. Elytra with a transverse narrow fulvous band at the middle. 



Length, <$ 2 lines, $ 3-3^ lines. 



c? . Head nearly impunctate, deeply f oveolate between the eyes ; antennae two thirds the length of the body, 

 very slender, black, the three basal joints rufous; thorax transversely convex, the anterior portion 

 deflexed and the angles produced into a short tooth, surface very smooth, entirely impunctate, rufous or 

 fulvous, very shining ; scutellum fulvous ; elytra distinctly narrowed towards the apex, longitudinally 

 grooved within the humeral callus, and with a short transverse depression below the base, strongly and 

 rather regularly punctate-striate, the striae a little more distinctly geminate towards the side, but fainter 

 and more distant towards the apex ; the extreme lateral margin and the apex narrowly fulvous ; lower 

 half of the tibia? and the tarsi black. 



2 . Larger, elytra more finely and very distinctly geminate punctate-striate, each elytron with the following 

 costae — a very short one below the transverse depression, another very distinct one from the humeral 

 callus to a little distance from the apex, running in a rather curved shape, and two others parallel with 

 the second near the lateral margin, and of nearly the same length as the preceding one ; outside this last 

 costa is a double row of punctures, another deeply impressed punctured single line accompanying the 

 lateral margin. 



Hob. Mexico, La Parada (Salle) ; Panama, Volcan de Chiriqui, 2000-3000 feet 

 (Champion). 



The present species may be distinguished from C. hybrida by the entirely impunctate 

 thorax of the male, and the almost simply punctate-striate elytra, the rows of which are 

 more distantly placed and more regular than in the last-named species, which shows more 

 distinct traces of double lines. The female of C. godmani is more difficult to separate 

 from that of C. hybrida ; the punctuation in the former, however, is arranged in close 

 double lines, the costae are more highly raised, and the space between the second and 

 third costa is wider and contains many more punctures : this latter character seems 

 to be more constant than the others, as the specimens show a good deal of variation in 

 regard to the sculpturing of the elytra. Many specimens have been lately received 

 from Chiriqui, from which I have been able to determine the relationship of the sexes. 

 The varieties are either entirely fulvous above, with a slight metallic-green gloss, or a 



