260 PHYTOPHAGA. 



margin, and an equally narrow convex and dentate band placed at the posterior half and 

 at some distance from the suture. The insect, of which three specimens have been 

 lately received, much resembles D. eucosma, from which the simply punctate-stnate 

 elytra at once distinguish it, the latter being geminate punctate in the allied species. 



DESMOGRAMMA. 



Desmogramraa, Erichson, Archiv f. Naturg. 1847, i. p. 157. 



In the species constituting the present genus, the prosternum is distinctly raised 

 anteriorly and truncate, which structural character separates the genus at once from all 

 others. About twenty-eight species, all inhabitants of South America, are known ; the 

 genus wants, however, revising, J), redtenbacheri, Stal, for example, belonging to 

 another genus on account of the prosternum being normal and not raised. A single 

 species is known to me from Central America : — 



l. Desmogramma conjugata. 



Desmogramma conjugata, Stal, Diagn. 1859, p. 320 ; Monogr. Chrys. Amer. p. 227 ». 



Hab. Panama (Boucard), Veragua 1 , David (Champion).— Colombia 1 . 



The general colour of this species is not always chestnut-brown as stated by Stal, but 

 varies in often having a decided ameous tint. The specimens obtained by Mr. Champion 

 agree in all respects with those in the collection of Mr. Baly named by Stal. 



ELYTROSPILERA. 



Elytrosphara, Stal, Diagn. 1858, p. 474; Monogr. Chrys. Amer. p. 146. 



In the want of membranous wings and in its general shape, Elytrosplwra 

 approaches very closely the genus Timarcha, as has been also pointed out by Chapuis. 

 The thorax in the former genus is much constricted at the base, and generally much 

 narrower than the elytra, the latter being very convex and much narrowed at the apex. 

 Amongst the described species many have the elytra ornamented by waved transverse 

 metallic golden lines on a dark ground, others resembling in their markings some 

 species of Doryphora. I am acquainted with only five species from Mexico, of which 

 three have not been described previously. 



1. Elytrosphaera quadrimaculata. (Tab. XV. fig. 22.) 



Oblong-ovate, convex, widened behind, black; head and thorax rugose-punctate; elytra subgeminate punctate- 

 stviate, testaceous, the sutural and lateral margins and two triangular large patches, one before, the other 

 behind the middle of each elytron, black. 



Length 5-6 lines. 



Head very closely punctured, rugose punctate near the middle ; antennae extending scarcely beyond tne base or 

 the thorax, the first six joints shining, the rest opaque, slightly longer than broad ; thorax scarcely twice 

 as broad as long, the sides nearly straight, slightly narrowed towards the base, the anterior angles acute 



