380 PHYTOPHAGA. 



behind their base not raised and scarcely visibly depressed behind, the punctuation distinct, close and 

 L'eglr the interstices slightly wrinkled anteriorly ; legs fulvous, the uppersxde of the anterior and the 

 apices of the posterior femora piceous. 



Hob. Mexico, La Parada (Salle). A single specimen. 



CHRYSOGEAMMA. 



Body oblong- frontal tubercles absent; penultimate joint of the palpi thickened, the terminal joint acute 

 BOy eS antennae filiform, the third joint longer than the second ; thorax *™^jf^^ 

 groove/the posterior margin rounded ; scutellum broad, triangular; elytra oblong, narrowed towards the 

 Sex surface closely and irregularly punctured ; posterior femora strongly mcrassate ; the tibiae feebly 

 luneUeltte ^postorior ones armed wL a short spur; the first joint of the posterior tar. as long as tije 

 trfoUowing'joints united; claws appendiculate ; anterior coxal cavities open; presternum narrowly 

 elongate ; apex of the mesosternum deeply concave-emargmate. 

 The single species for which I propose the present genus has much the appearance 

 of a Disonycha, while its coloration resembles that of a species of Calligrapha of the 

 group Chrysomelinae. It cannot, however, be mistaken for the former genus, on account 

 of the entire absence of a transverse thoracic groove, the more transversely shaped 

 thorax, the posterior margin of which is regularly rounded and not obliquely cut at its 

 posterior angles as is always the case in Disonycha. The deeply emargmate apex of 

 the mesosternum into which the base of the metasternum projects is another distin- 

 guishing character of the present genus, the peculiar coloration of which is of rare 

 occurrence among the Halticinse. 



l Chrysogramma octomaculata. (Tab. XXII. fig. 8.) 



Oblong-ovate, below fulvous; head and thorax greenish-ameous, closely punctured; elytra testaceous, closely 

 punctured, the sutural and lateral margins and eight spots on each elytron (3, 2, 2, 1) metallic green. 



UwerVarto^the head greenish-ameous, finely granulate, and impressed with a few ^p PMcta ; low 

 part fulvous, deeply punctured each side of the clypeus ; antennae about half the length of the body, the 

 four lower joints and the terminal one fulvous, the others black ; thorax three times as broad as long, the 

 sides nearly straight, the anterior angles oblique, the surface finely granulate like the head, rather closely 

 and distinctly punctured, metallic greenish-ameous, the sides narrowly fulvous; scutellum yery broad, 

 impunctate, aeneous ; elytra closely and distinctly punctured, with eight metallic greenish spots placed as 

 follows :-a narrow elongate one within the shoulder to which a smaller spot is generally attached, 

 another near the scutellum, two small round spots near the middle, two larger ones below the latter (tne 

 inner one of which is joined to the sutural band), and a spot at the apex attached to the lateral margin ; 

 the femora are also more or less stained with greenish-aeneous, as well as the mesosternum. 



Hob. Guatemala, Capetillo (Champion). 



The metallic spots of the elytra are in some specimens of a bronze colour. 



b. Anterior coxal cavities closed. 

 ACROCYUM. 



Body oblong-ovate ; frontal tubercles broad and obsolete ; palpi filiform, the terminal joint elongate and 

 pointed ; antenna? filiform, slender, the second joint short, the third and following joints elongate and 



