DEROBRACHUS.—CALLIPOGON. 5 
elytris passim crebre subvermiculatim rugosis, apice muticis apud suturam dehiscentibus ; corpore subtus 
pedibusque levigatis ; metasterno abbreviato, pedibusque 4 posticis paullo approximatis. 
Long. 2 poll. 2lin. 9. 
Hab. Guatumata (Boucard). 
A species remarkable for the abbreviation of the metasternum and the consequent 
approximation of the middle and hind legs—a character which, taken together with 
the apterous condition of the females, reveals an affinity with Psalidognathus. In all 
essential points, however, the species agrees with Derobrachus. The male is at present 
unknown. 
MACRODONTIA. 
Macrodontia, Serv. Ann. Soc. Ent. Fr. 1832, p. 139. 
Six species of this genus have been described from South America, one of which, 
the well-known UV. cervicornis, has a wide range, from Rio Janeiro to the Upper Ama- 
zons, the others being local. The following is the only one hitherto known to occur 
beyond the Isthmus of Panama. 
1. Macrodontia dejeani. (Tab. I. fig. 6, ¢.) 
Macrodontia dejeantt, Gory, Ann. Soc. Ent. Fr. 1839, p. 127, t. 9. 
Hab. Nicaragua, Chontales (Belt).—CoLomsra. 
The figure is from a Chontales specimen. 
CALLIPOGON. 
Callipogon, Serv. Ann. Soc. Ent. Fr. 1832, p. 140. 
A genus of narrow range, extending from the tierra caliente of Mexico to Colombia, 
Three species only are known. 
1. Callipogon barbatum. 
Prionus barbatus, Fabr. Sp. Ins. i. p. 208; Oliv. Ent. iv. 66, p. 15, t. 10. f. 40. 
Hab. Nicaraeua, Chontales (Belt, Janson). 
The figure of Olivier, representing a male, and drawn from Fabrieius's type specimen, 
justifies us in considering the original description to refer to the Central-American 
form, and not to the Mexican, to which it has been since applied, the two forms being 
quite distinct enough to be regarded as species. ‘This is evident on comparing males 
of equal development, the Mexican species having mandibles twice the length of those 
of the Nicaraguan species, and antenne also relatively much longer. In Nicaragua the — 
following interesting variety occurs, apparently frequently, and in company with the type. 
Var. ornatum. (Tab. I. fig. 8.) 
A typo differt elytris utrinque macula rotundata medio-basali et vitta lata postice attenuata cano-pubes- 
centibus. 
