DORCATOMA. 209 
emarginate; the tenth is longer and less wide, the eleventh fusiform. The elytra are 
very finely and closely punctured, and with very fine strigee or scratches, with some 
finely impressed strize; these can of course only be seen where the elytra are denuded, 
which is the case in the specimen from Cerro Zunil. Three submarginal strize, how- 
ever, are easily observed. The pubescence is shining and horny; it is especially dense 
on the front and sides of the prothorax. 
A specimen from San Gerdnimo is figured. 
Section B. Antenne ten-jointed. 
2. Dorcatoma quadrimaculata. (Tab. X. fig. 17.) 
Piceo-nigra, nitida, antennis pedibusque picescentibus ; elytris striato-punctatis, singulis maculis duabus, haud 
bene determinatis, rufo-testaceis. Long. 2 millim. 
Hab. Guatemaa, Las Mercedes ( Champion) ; Panama, David (Champion). 
Short, oblong, very convex, almost hemispherical. Head quite sunk in the prothorax, 
pitchy. Thorax very finely punctured, and with sparse, very short grey pubescence ; 
base and sides more thickly punctured, the former rather bowed in the middle, the 
latter forming indistinct hind angles. Elytra shining, with distinct rows of separate 
punctures, which are deeper below the shoulders, the callus nearly smooth. Two deep 
submarginal striz, distinct at the apex, passing into punctured series at the base. The 
pubescence is very sparse, and only distinct at the apex, where it is subsetose. Of this 
very distinct species only three specimens have yet occurred. ‘The antenne are 
apparently ten-jointed, the five intermediate being very short, the two subapical ones 
dentate, transversely triangular, subequal. 
Section C. Antenne eight-jointed. 
3. Dorcatoma contracta. 
Breviter orbicularis, nigra, nitida, parce breviter pilosa ; elytris parce punctulatis, striis duabus submarginalibus 
profunde impressis; antennis ferrugineis ; pedibus piceis, femoribus dilutioribus. Long. 1-2 millim. 
Hab. Guatremata, Calderas, Capetillo, Aceituno 9 % (Champion). 
This is a very short and broad insect, with a prominent humerus, two well-marked 
strice close to the margin, which are entire, and a short one near the shoulder above 
them. The antenne have the first joint of the club, ¢.e. the sixth, very strongly and 
dentately produced internally, so that the width is greater than the length; the two 
terminal ones are subequal and not angulate. The example from Aceituno has the 
base and three terminal joints of the antenne pitchy, and the sixth or first club-joint 
scarcely produced. It may probably be the female. 
BIOL. CENTR.-AMER., Coleopt., Vol. III. Pt. 2, July 1883. 2K 
