4 LONGICORNIA. 
Hab. Costa Rica, Volcan de Irazu (Rogers).—Ecuapor. 
A pair (do ¢ ) taken by Rogers on the Volcano of Irazu, in Costa Rica, agree closely 
with specimens received from Loja, in Ecuador, which I refer to P. modestus, Fries, 
but with much doubt, as the description is not quite satisfactory. 
PITHOCLES. 
Pithocles, Thoms. Syst. Ceramb. p. 292. 
Contains one species only, peculiar to Mexico. The genus is very closely allied 
to the following, differing chiefly in the flattened antennal joints of the male. 
1. Pithocles’ procerus. 
Pithocles procerus, Thoms. Syst. Ceramb. p. 292. 
Hab. Mextco (Sallé). 
DEROBRACHUS. 
Derobrachus, Serv. Ann. Soc. Ent. Fr. 1832, p. 154. 
Braderochus (Buq.), Lacord. Genera des Col. viii. p. 74. 
This genus is well represented in Central America, and may be cited as one of the 
characteristic forms of the region. Two species only are foreign—one (D. brevicollis) 
found in the South-eastern States of North America, and the other (D. agyleus) in 
“Colombia.” 
1. Derobrachus longicornis. (Tab. I. fig. 9.) 
Braderochus longicornis, Bates, Tr. Ent. Soc. 1869, p. 166. 
Hab. Nicaragua, Chontales (Belt). 
2. Derobrachus inzequalis. 
Derobrachus inequalis, Bates, Tr. Ent. Soc. 1869, p. 167, note. 
Hab. GUATEMALA. 
8. Derobrachus asperatus. (Tab. I. fig. 43, fig. 5 ¢.) 
Derobrachus asperatus, Bates, Entom. Monthly Mag. xiv. p. 274 (1878). 
Elongato-oblongus, supra omnino intricato-punctatus, nitidus, niger, elytris maris interdum castaneis; thorace 
utrinque equaliter trispinoso ; elytris nullo modo costatis, apice ad suturam spinosis ; antennis ¢ corpore 
paullulum brevioribus, articulis 1°-3™ asperato-punctatis, 3° supra sulcato, 4°-5™ lateribus, 6°-11™ omnino 
subtiliter acute strigosis ; pedibus asperato-granulatis et punctatis ; corpore subtus levi, pectore lateribus 
punctatis et fulvo-pilosis. 
Long. ¢ 1 poll. 9 lin., ¢ 2 poll. 3 lin. 
Hab. Costa Rica, Volcan de Irazu (Rogers). 
4, Derobrachus apterus. 
@ apterus; elongato-oblongus, nigro-piceus, nitidus, palpis fulvis ; capite grosse scabroso ; thorace minus trans- 
verso, nigro-polito, grosse sed haud crebre scabroso, lateribus utrinque 4-spinosis, 2 anticis conjunctis ; 
