CLAMOPHOEA. 339 



straight (not oblique at the sides), the prosternum is less abruptly deflexed posteriorly, 

 and the general size of the insects is much smaller. But these differences are more of 

 degree than of structure, and I prefer to place the species in Clamophora rather than 

 create a new genus for them. 



1. Clamophora nigritarsis. (Tab. XX. fig. 21.) 



cJ . Entirely fulvous ; antennae (the first joint excepted) and tarsi black ; head and thorax impunctate ; elytra 



finely semipunctate-striate. 

 2 • The thorax less transverse, the sides of the elytra costate. 



Length 2 lines. 



Head rather flattened, impunctate, with a short but deep groove immediately above the eyes, the frontal tubercles 

 but slightly raised and continued in front to the clypeus, the carina absent ; labrum and palpi piceous ; 

 antenna? nearly two thirds of the length of the body, black, the first joint fulvous, the third to the apical 

 joint of nearly equal length ; thorax of equal width, the sides strongly rounded and extending beyond the 

 base of the elytra, all the angles obtuse and not produced, the basilar groove deeply impressed but narrow 

 and well bounded at the sides by a longitudinal groove, this latter placed at but a short distance from the 

 scutellum ; nearer the sides another obsolete short depression may be seen when the insect is viewed in 

 certain lights ; the surface of the thorax impunctate ; elytra very slightly convex, elongate, and narrowed 

 near the apex, finely and closely punctured, the punctuation arranged in indistinct rows, the interstices 

 very obsoletely raised in longitudinal costae near the sides ; tibiae piceous ; tarsi black, the anterior ones 

 dilated in the male. 



Hah. Panama, Volcan de Chiriqui, Pefia Blanca 3000 to 4000 feet (Champion). 



In the female, of which two specimens are before me, the thorax is much less 

 transverse than in the male, and the elytral interstices are more or less longitudinally 

 costate (in one specimen at the sides only). One male and two female specimens were 

 obtained. 



2. Clamophora salvini. 



Oblong ovate, below black; above bluish black; head and thorax impunctate; elytra finely and closely 

 punctured, tbe punctures arranged here and there in irregular double rows. 



Length 1J line. 



Head with a deep transverse groove extending to the eyes, the space behind this groove bounded at the middle 

 by another obsolete depression, the frontal tubercles broad and of somewhat rounded shape; the carina 

 also broadly trigonate, the clypeus divided in the middle by a strongly raised ridge, and the sides distinctly 

 excavated; labrum and palpi piceous; antennae more than half the length of the body, of the same pro- 

 portionate construction as in the preceding species, the two basal joints sometimes fulvous ; thorax of the 

 same shape as O. nigritarsis, but rather less transverse proportionately, the surf ace impunctate, the basilar 

 sulcation deeply impressed and bounded by an equally well-marked longitudinal lateral groove; elytra with 

 very obsoletely raised interstices near the sides, finely punctured, the punctures more or less arranged in 

 double rows. 



Hab. Guatemala, near the city 5000 feet (Salvin) 



This species, of which three specimens were obtained by Mr. Salvin, is easily known 

 by the peculiar formation of the clypeus, and the extra fine groove surrounding a small 

 space behind the frontal tubercles. 



2x2 



