614 PHYTOPHAGA. 



piceous ; antenna? slender, fuscous, longer than the hody ; thorax narrowly transverse, the sides nearly 

 straight, the surface remotely and sparingly punctured, with some almost obsolete fuscous spots, of which, 

 two are placed near the middle, and three, transversely, near the base ; scutellum piceous ; elytra narrowly 

 elongate, more distinctly and closely punctured than the thorax, with two almost obsolete narrow longi- 

 tudinal bands extending from the base to the apex, one placed near the sutural and the other near the 

 lateral margin ; the underside and legs obscure, lighter or darker, testaceous. 



Hah. Panama, Volcan de Chiriqui [Champion). 



In one specimen the elytral bands are scarcely visible. The thorax is narrower and 

 shorter, and its sides straighter than in E. quadri-maculatus. The terminal joints of the 

 antennae in all the specimens are unfortunately broken off, but even the remaining 

 nine joints extend beyond the apex of the elytra. In its general structure E. obscuro- 

 vittatus agrees well with E. quadri-maculatus. 



4. Elyces nigripennis. 



Black ; head and thorax fulvous, impunctate ; elytra black, finely and rather remotely punctured. 



Length \\ line. 



Head with a few fine punctures at the vertex, fulvous ; the frontal tubercles rather strongly swollen ; the 

 clypeus broad and scarcely thickened; the palpi black, their penultimate joint strongly thickened; 

 antennae black, two thirds the length of the body, the third joint twice as long as the second, the fourth 

 joint the longest ; thorax scarcely broader than long, the sides straight, slightly narrowed at the base, 

 the surface rather convex, rather strongly deflexed at the sides, the disc impunctate, fulvous or flavous ; 

 scutellum black, rather broad, and obtusely rounded at the apex ; elytra a little widened posteriorly, the 



shoulders but little prominent, the punctuation not very closely arranged. 



« 



Hah. Guatemala, Las Mercedes, Cerro Zunil, Sabo in Vera Paz [Champion). 



The specimen from Sabo differs from the others in having the palpi and the scutellum 

 fulvous*, and the elytra more finely punctured. E. nigripennis is separated from the 

 other species of the genus by the less transverse thorax and the shorter antennse, but 

 not by any other structural details. 



MASUEIUS. 



Body elongate, subparallel ; head broad ; clypeus well defined ; antennse long, filiform, pubescent, the third 

 joint more than twice the length of the second ; thorax transverse ; elytra irregularly punctured, their 

 epipleurse continued to the apex ; tibiae unarmed ; the first joint of the posterior tarsi as long as the 

 following three joints together ; claws appendiculate ; anterior coxal cavities open. 



In general appearance this genus resembles Elyces ; the antennse are, however, 

 generally shorter and more robust ; the head is differently shaped, and has a distinct 

 clypeus ; and the thorax is more transverse. Masurius also greatly resembles Chthoneis, 

 but cannot be identified therewith on account of the longer third joint and the non- 

 dilated intermediate joints of the antennae ; the thorax is also more transverse than in 

 the typical species of that genus. Masurius does not possess well-defined characters, 

 being somewhat intermediate between Elyces and Chthoneis ; nevertheless it would not 

 *be advantageous to place the species included in it in either of these genera. 



The four species referred to it are all from Central America. 



