CATOLZAMUS.—BITOMA. 457 
CATOLAIMUS, gen. nov. 
Corpus minutum, subtus planum, epipleuris prominulis ; supra sat convexum, squamulis omnium brevissimis 
ornatum. Antenne parve, decem-articulate; clava uniarticulata. Pedes brevissimi, debiles. Sulci 
antennarii perfecti, extrorsum curvati. 
This genus is established for an insect that is amongst the most minute of the yet 
discovered Colydiide. It is most nearly allied to Anewmesa, but differs from it by the 
inflexed epipleuree, which form a sharp prominent margin to the underside of the body. 
The antennary grooves are remarkably perfect. The coxe are all extremely approxi- 
mate; the anterior acetabula are open. ‘The legs are remarkably short; the tibiz 
slender, not armed externally or at the tip. 
1. Catolemus minutus, sp.n. (Tab. XIV. fig. 18.) 
Ovalis, testaceus, capite prothoracisque disco infuscatis; elytris argute nigro-signatis ; superne undique squa- 
mulis brevissimis, suberectis, albidis ornatus. 
Long. 13 millim. 
Hab. Guatemata, Pantaleon (Champion). 
Antenne extremely short. Thorax short, much narrowed in front; anterior angles 
prominent; posterior angles very obtuse; sides explanate, entire. Elytra continuous 
in outline with the thorax, a little broader behind; pale yellow, with a common black 
mark about the scutellum, and an apical dark mark enclosing a yellow spot on each, 
the apical mark extending forwards at the side nearly to the shoulder, and with a 
shorter and broader anterior prolongation near the suture. The sculpture is very 
obscure and consists apparently of fine striation; the extremely regularly-arranged 
scale-like sete are directed backwards on the elytra, forwards on the thorax. 
Only one example of this minute Colydiid was obtained. 
BITOMA. 
Bitoma, Herbst, Kafer, v. p. 26 (1796). 
Ditoma, Mlliger, Mag. vi. p. 820 (1807) ; Erichson, Naturg. Ins. Deutschl. iii. p. 265. 
Synchytodes, Crotch, Check-list Col. of Am. north of Mex. p. 45 (1873). 
This genus includes at present about thirty species, and is apparently almost cosmo- 
politan in distribution. 
One of the species I have provisionally placed in it is totally different in appearance 
from the rest, and will no doubt have to be removed. 
The emendation of Ditoma in place of Bitoma cannot be adopted, as it amounts to 
the substitution of a new name for a prior one. 
BIOL. CENTR.-AMER., Coleopt., Vol. II. Pt. 1, October 1894. 3 N* 
