600 PHYTOPHAGA. 



Of a uniformly dull testaceous colour, the upper surface shining ; the pygidium in 

 the female insect extending beyond the apex of the elytra. Many specimens. 



11. Luperus flavo-femoratus. 



Flavous, the antennae obscure fuscous, the knees, tibiae, and tarsi black, the upper surface pale yellowish-brown, 

 shining ; thorax impunctate ; elytra finely punctured. 



Length 2-2\ lines. 



Head impunctate ; the frontal tubercles distinct ; eyes large ; antennae more than half the length of the body, 

 fulvous, the intermediate joints more or less fuscous, the third joint more than twice the length of the 

 second ; thorax subquadrate, about one half broader than long, the sides narrowed at the base, sjightly 

 rounded in front, the disc impunctate, flavous ; elytra slightly darker than the thorax (of a browner tint) 

 and very shining, very finely and closely punctured ; underside flavous ; the knees and the tibise black, 

 covered with yellow pubescence, the tarsi obscure fuscous or fulvous ; the first joint of the posterior tarsi 

 as long aB the following three joints together ; all the tibiae mucronate ; claws appendiculate. 



Hab. Guatemala, Volcan de Atitlan 2500 to 3500 feet (Champion), 



The present insect, although rather larger and of more robust appearance than is 

 generally the case in Luperus, has all the structural characters of the genus. 



OECETE& 



Head broad; the penultimate joint of the palpi incrassate ; antennae filiform, deformed in the male, the second 

 and third joints short ; thorax transversely subquadrate, the surface deeply depressed ; elytra irregularly 

 punctured, their epipleurae •obsolete below the middle ; the posterior tibiae with a short spine ; the inter- 

 mediate tibiae notched near the apex in the male ; the first joint of the posterior tarsi rather longer than 

 the following three joints united ; claws appendiculate ; the anterior coxal cavities open. 



This new genus, which should be placed near Luperus, is separated from any of the 

 genera composing this section by the broad head and the depressed thorax, and by the 

 elytral epipleurae being obsolete below the middle ; the male insect is further distin- 

 guished by the structure of the antennae, and by the intermediate tibia? being notched 

 near the apex. 



I include in it a single species from Nicaragua and Panama. 



1. Oroetes flavicollis. (Tab. XXXIII. fig. 4, <j .) 



Flavous, the antennae (the basal four joints in the male, the basal two in the female, excepted) black ; elytra 

 finely punctured, irregularly depressed, dark violaceous-blue, the lateral margins anteriorly flavous. 



cJ . Antennae with the third joint transverse, the fourth joint flattened and widened ; thorax with a conical 



tubercle in the middle ; the intermediate tibiae notched at the apex. 

 Length 2 lines. 



J . Head broader than long, impunctate ; the vertex swollen, divided by a central groove ; the clypeus broad 

 and flattened, separated from the sides of the face by a flattened space ; antennae nearly as long as the 

 body, the first joint incrassate, the second joint very short, the third transverse, flattened, its inner apical 

 angle produced into a tooth, the fourth securiform, flattened, the following joints elongate, pubescent; 

 thorax twice as broad as long, the sides narrowed towards the base, the anterior margin slightly produced 

 in the middle, the surface deeply depressed, with a tubercle at the centre of the depression (the tubercle 

 impressed in the middle), the disc impunctate ; scutellum triangular, flavous ; elytra dark metallic viola- 

 ceous, finely punctured, with some shallow irregular depressions, the lateral margin from the base to the 



