various Central American Coleoptera. 153 
Tylistus, Leconte, Class. Col. N. Am., p. 203 (1861). 
Enneatoma, Mulsant et Rey, Térédiles, p. 367 (1861). 
This genus, as restricted by Fall, includes various forms 
related to Dorcatoma in which the intercoxal portion of the 
prosternum is simply truncate behind and the long horn- 
like processes are altogether wanting, and the eyes are very 
deeply excised. In the type of Caenocara, C. bovistae, the 
eyes are so deeply notched as to be nearly divided into two, 
but in one of the new species now added, C. flohri, the 
notch extends only half-way across them. In all these 
forms the elytra have an additional sublateral callosity 
at about the middle, thus appearing constricted below the 
swollen humeri. The antennae are 9-jointed, and the 
elytra have a short subhumeral and two deep submarginal 
striae. Three species only are known to me from Central 
America, one of which, C. bovistae, has not previously been 
recorded from the New World;! Fall enumerates twelve 
from the United States, based mainly upon the form of the 
palpi, antennae, or eyes, in the male sex. The Central 
American forms may be tabulated thus :— 
Eyes almost divided into two : body black. 
Thorax and elytra densely punctate . . *bovistae, Hofim. 
Thorax and elytra more sparsely punctate quercus, n. sp. 
Eyes notched to about the middle; thorax 
and elytra densely punctate: body 
castaneous above . . . . . . . flohri,n. sp. 
*Caenocara quercus, 0. sp. 
Dorcatoma contracta, Gorh., Biol. Centr.-Am., Coleopt. iii, 2 
p. 209 (part.). ; 
Priotoma contracta, Gorh., loc cit. p. 351 (part.). 
g. Suborbicular, very shining, black, the antennae ferruginous, 
with the basal joint infuscate, the legs piceous or rufo-piceous, the 
tarsi and anterior femora ferruginous; somewhat thickly clothed 
above and beneath with long cinereous hairs. Head closely, the 
rest of the upper surface more sparsely, finely punctate; eyes 
rather small, the antennal groove extending nearly across them ; 
antennae 9-jointed, the dentiform first joint of the club greatly 
produced inwards, the two succeeding joints broad, elongate; elytra 
1 Dorcatoma dresdensis, Herbst (= pallicornis, Lec.), is recorded 
by Fall as rather common in the United States. 
