564 MONOTOMIDZ. 
Subfam. MONOTOMINE. 
MONOTOMA. 
Monotoma, Herbst, Kafer, v. p. 22 (1793). 
About thirty species are known of this genus, which has a wide distribution in both 
the Old and New Worlds. None have hitherto been recorded from our region, where, 
however, three species have been discovered by Mr. Champion. 
1. Monotoma centralis, sp. n. 
Fusca vel testacea, antennis pedibusque rufis ; parum elongata; capite prothoraceque dense, fortius punciatis, 
opacis, hoc subquadrato, basi in medio bifoveolata; elytris seriatim punctatis, setosis, apicem versus haud 
omnino opacis. 
Long. 24-22 millim. 
Hab. Mexico, Cordova (Sallé); GuateMata, near the city, Zapote, Capetillo, Duefias, 
San Geronimo (Champion). 
Extremely similar to the European M. brevicollis, Aubé, but rather broader and 
with the antenne a little larger. Head broad and short, feebly bi-impressed ; densely 
sculptured, opaque. Thorax as broad as long, only very slightly narrowed in front, at 
the base with two distant fovez; very coarsely punctate and clothed with rather long 
sete. Elytra unusually broad in proportion to their length, with the sculpture and 
clothing almost as in JZ. brevicollis, but rather coarser. 
Many specimens from Guatemala, but only one from Mexico. The male has a 
slight flattening of the middle of the last ventral plate. 
M. Oberthiir has sent me an insect allied to W/. centralis, labelled “ M. latridioides, 
Reitter, Colombia.” I cannot find a description of this species, but may mention that 
it differs from MW. centralis by the narrower thorax, coarser punctuation, and the very 
large sete on the elytra. 
2. Monotoma munda, sp. n. 
Testaceo-ferruginea, opaca, brevissime setosa; prothorace anguste subquadrato, minus fortiter punctato, basi 
vix perspicue bifoveolata; elytris seriatim sculpturatis. 
Long. 2 millim. 
Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 
Extremely similar in form to WM. centralis, but readily distinguished by the less 
coarse sculpture, the short setosity, and the different male characters. In that sex the 
terminal segment projects somewhat downwards, and its ventral surface is broadly and 
deeply impressed. The female has only a small obscure impression on the last ventral 
plate. One pair. 
In size and shape this insect almost exactly resembles a small form of M. brevicollis, 
Aubé, that occurs in Britain. 
