238 HETEROMERA. 
not considered by that author, nor by the present writer, to be distinct from Anedus. 
A typical example from David is figured. 
PARATENETUS. 
Paratenetus, Spinola, Essai monogr. sur les Clérites, ii. p. 116 (1844); Motschoulsky, Bull. de 
Moscou, xli. pt. 2, p. 192; Horn, Rev. Ten. of America north of Mexico, p. 373. 
This New-World genus was included by Spinola in the Cleride, and placed near 
Corynetes. Subsequent writers (Erichson, Motschoulsky, Leconte, and Horn) have placed 
it in the Tenebrionide, in the group “ Heterotarsides” ; it is not noticed by Lacordaire. 
Two species only were known to Spinola; Motschoulsky (Joc. cit.) in a synoptical table 
has given brief characters for a number of additional species from North and South 
America, some of which probably will never be identified, and one has been described 
by Leconte from the Northern United States and Canada. The males* of all the 
species known to me have the anterior tibie armed with a sharp tooth in the middle 
beneath (scarcely visible from above) and often the intermediate and posterior tibie 
more or less denticulate or toothed within; in P. villosus there is also a strong blunt 
tooth at the extreme base of the anterior femora beneath. In two species examined 
(P. villosus and P. tibialis) I find the second joint of the labial palpi to be stout and 
ovate, much stouter than the apical joint ; we give a figure of the labium of P. villosus. 
An allied genus, Tithassa, Pasc., is found in Brazil. Paratenetus bears a strong super- 
ficial resemblance to the genus Corticaria. These insects are numerous in Central 
America, whence we now record twelve species. The different species are found 
upon herbage or by beating the withered still-attached leaves of fallen forest trees. 
The following table will assist in the identification of the Central-American species :— 
Club of the antenne exceedingly stout, still stouter in the male, black. 
Species large; the elytra slightly constricted before the 
apex 2... ee ee ew we ww ee we we LtbIalis. 
Species small; the elytra oblong oval (form of Corticaria) . grandicornis. 
Club of the antennz very stout, still stouter in the male, ferruginous . . ruficornis. 
Club of the antennz moderate, similar in both sexes, piceous. 
Elytra comparatively long, confusedly punctured. 
Species of large size. © ©. / ee ew ee ee e Villosus. 
Species smaller. 
The sides of the thorax rather coarsely crenulate . . punctatus. 
The sides of the thorax more finely crenulate. 
Form oblong ovate . . . . . . . « « corticarioides. 
Form obovate . . . . . . . . « + « obovatus. 
Elytra comparatively long, the punctures arranged in irregular rows 
towards the sides. . 2. 2. 2. 1. 2 1 1 © 6 © we ee s) crenulatus. 
® The sexes do not appear to have been identified by previous writers; apparently the female only was 
known to Spinola. 
