PENICHRUS.—TRICHOTON. 135 
confounded with the front ; the lateral margins of the front (antennary orbits) swollen, slightly divergent, 
scarcely impinging on the eyes behind; eyes prominent, lateral, coarsely granulated, distant, transverse 
oval, almost entire; labrum prominent, transverse ; prothorax subquadrangular, distinctly margined, 
much narrower than the elytra; scutellum small, narrow; elytra more than twice as long as the pro- 
thorax, convex, the base nearly straight, the humeri rounded, somewhat rounded at the sides, widest 
behind the middle, then narrowed to the apex, regularly crenate-striate, the interstices feebly convex, the 
epipleure narrowing gradually from the base and scarcely reaching the apex; legs much as in Blapstinus, 
smooth ; tarsi clothed with fine silky hairs beneath, the fourth joint of the anterior and intermediate 
pairs small, the anterior pair in the male dilated and clothed with spongy hair beneath ; prosternum 
narrow, deflexed behind ; intercoxal process broad, rounded in front; middle coxal cavities almost closed, 
trochantin scarcely visible; in the male the first and second ventral segments flattened and longitudinally 
excavate, and the last segment slightly flattened, in the middle. Form of Blapstinus. Winged. 
The above characters have been drawn up to receive the undescribed Penichrus nanus, 
Dej., from Colombia and Brazil, and a closely allied species from the State of Panama. 
In spite of the differently-formed head, &c., this genus seems to me to be nearly allied 
to the “ Pedinides” ; in the male the anterior tarsi are distinctly dilated and spongy 
beneath, and the ventral surface is longitudinally excavate in the middle, as in certain 
Blapstinus, to a small species of which Penichrus bears considerable resemblance. 
1. Penichrus blapstinoides. (Tab. VI. fig. 23, ¢.) 
Oblong ovate, convex, reddish brown or black, with a distinct eeneous or brassy tinge, slightly shining, sparingly 
clothed with fine short cinereous pubescence. Head finely and closely punctured; prothorax rather 
broader than long, the sides rounded before the middle and straight and slightly narrowing behind, 
widest before the middle, the apex nearly straight, the base feebly bisinuate and with a shallow oblique 
fovea on each side about the middle, anterior angles obtuse, hind angles rectangular, the disc slightly 
impressed before the base, finely, closely, and equally punctured; elytra much wider than the prothorax, 
regularly crenate-striate from base to apex, the interstices convex, exceedingly finely and closely punc- 
tured ; legs reddish brown, the femora darker. Beneath closely and rather finely punctured. 
Length 4 millim. (¢ 2.) 
Had. Panama, near the city, David (Champion). 
Four examples beaten from the flowers of a large tree. 
Group HOPATRIDES, 
This group is represented in our country by two genera only; exceedingly few 
genera or species of Hopatrides are found in the New World. 
TRICHOTON. 
Tyrichoton, Hope, Coleopt. Manual, iii. p. 111; Lacord. Gen. Col. v. p. 275. 
Epilasium, Blanchard, Hist. Nat. Ins. ii. p. 14; Dej. Cat. 3rd edit. p. 214. 
Two or three species of this genus are known from South America, and one has been 
described from the island of Guam ; Blapstinus sordidus, Lec., from Arizona, is possibly 
referable to it. Two species, both apparently undescribed, are found in Central America. 
