142 HETEROMERA. 
in Mr. F. Bates’s collection, the sexes in the P. lebasii group differ considerably in the 
cephalic armature, and that the horns upon the vertex are strongly bifurcate in the 
male, and subtriangular in the female. P. sommeri will form the type of a new genus, 
Cleolaus. 
By separating these species, the third group of Lacordaire (containing the South- 
American P. taurus, Lac., P. goudotii, Lac., and P. cervus, F. Bates, which all have 
enormously developed, erect, curved horns upon the head, a large scutellum, &c.) will 
require a new name; it might be called Molion. | 
P. lebasii is a native of Colombia; we now add an allied species from the State of 
Panama. 
1. Peneta panamensis. (Tab. VII. fig. 3; 3a, antenna.) 
- Elongate ovate, very convex, subparallel, dark reddish brown, shining. Head with some scattered shallow 
rather coarse punctures, the anterior margin very strongly raised and reflexed (ending immediately above 
the eyes, and not extending along their inner margin), the vertex with a stout erect subtriangular longitu- 
dinal elevation on each side (placed some distance behind and just within the eyes), extending obliquely 
inwards in front to the anterior margin ; prothorax transverse, the anterior angles prominent but not 
swollen, the hind angles obtuse and rounded, narrowing a little anteriorly, the sides straight from the 
middle to the base, the surface with scattered rather coarse punctures (which are placed more closely along 
the anterior margin); scutellum small, transverse; elytra very coarsely punctate-striate, the interstices 
convex and almost smooth ; beneath shining, the sides of the metasternum and the ventral surface with 
coarse scattered punctures; prosternum declivous behind, the apex not produced; metasternum deeply 
canaliculate behind; antenne with a stout, loosely articulated 3-jointed club, the last joint ovate ; 
epipleure extending to the apex of the elytra. 
Length 63 millim. (9?) 
Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
One example. 
CLEOLAUS. 
Peneta, sect. (1) B, Lacordaire, Gen. Col. v. p. 819, nota (1859). 
This genus, as understood here, will contain a single species from Mexico. 
1. Cleolaus sommeri. (Tab. VII. fig. 4.) 
Peneta sommeri, Lac. loc. cit. p. 319, nota’. 
Hab. Mexico! (Sal/é), Oaxaca (coll. F. Bates). 
The head in this very short and broadly convex species is similarly formed in both 
sexes, and sunk into the prothorax as far as the eyes, the scutellum almost obsolete, 
the prothorax broadly and deeply transversely excavate anteriorly, and the epipleure 
very broad almost to the apex. 
TELCHIS. 
Mentum trapeziform, strongly deflexed on either side, the anterior angles produced, deeply bisinuate in front ; 
inner and outer lobes of the maxille armed with long coarse sete ; last joint of the maxillary palpi oblong 
