108 INSECTA. 
Here the antenne are long, setaceous and simple, or at most 
slightly spinous or furnished with fasciculi of hairs, 
The thorax is always large, very uneven, and hardly wider than it 
is long. 
Dorcacerus, Dej.—CERAmByYx, Oliv. 
The species of this subgenus are distinguished from all the others 
by their large vertical head, which is almost as wide as the thorax 
taken in its greatest transversal diameter; plane and densely pilose 
before. The antenne are very remote. The preesternum is not 
raised into a carina, and terminates simply ina point. The scutel- 
lum is small *. 
Tracnyperes, Dalm.—Cerrameyx, Fab. 
Where the thorax is large, much wider than the head, and the pos- 
terior (and frequently the opposite) extremity of the preesternum is 
raised into a carina; where the scuttellum is elongated, the elytra 
are widest at base, and become narrower as they progress towards 
the extremity ; and where the antenne are not furnished with fasci- 
culi of hairs f. 
LoprHonocerus, Lat. 
Where the head is also narrower than the thorax, and the poste- 
rior extremity of the praesternum is carinated; but this thorax, as 
well as the scuttellum, is proportionally smaller. The elytra are 
widened towards their extremity, or at least do not become narrower; 
the third joint of the antennz, and the three following ones are fur- 
nished with fasciculi of hairs f. 
There, the antennz are shorter than the body, and pectinated or 
serrated. The thorax is transversal and dentated laterally. The 
elytra are widened posteriorly. 
Crenopes, Oliv., Alig. § 
Now the thorax, either almost square or cylindrical, or orbicular 
or nearly globular, is much shorter than the elytra, at least in those 
in which it is extended in width, and the preesternum presents neither 
carina nor pointed prolongation at its posterior extremity. The scu- 
tellum is always small, and the legs are approximated at base. 
A single subgenus, 
Puenicocerus, Lat., 
Is removed from the following ones by the form of the antenne of 
the male, the joints of which, commencing with the third, are pro- 
longed into long and narrow laminz forming a large fascis or fan. 
* Cerambyz barbatus, Oliv.; Dej.; Catal., p. 105. 
 Schoenherr, Synon. Insect., I. 3, p. 364. i 
} Cerambyx barbicornes, Oliv. ;—Trachyderes hirticornis, Schcenh. ;—Cerambye 
hirticornis, Kirby. 
§ Oliv., Col., VI, 59, bis, I, 1; Scheenh., Synon. Insect. I, 3, p. 346;—The 
Ctenodes zonata, minuta, geniculata, Klig, Entom, Bras,, XLII, 1, 2,3. As the only 
knowledge I haye of these Insects is through drawings, I merely place-them here 
from analogy, 
