288 Mr. H. W. Bates on the Longicorn Coleoptera 
XXXII.— Contributions to an Insect Fauna of the Amazons Valley. 
Couuoprera: Lonercornes. By H. W. Barus, Esq. 
[Continued from p. 201.] 
Group Pogonocherine. 
Genus PRyMNos!Is, nov. gen. 
Body elongate, plane above, and clothed with short, fine, erect 
hairs. Head small, depressed on the crown between the anten- 
niferous tubercles, prolonged some distance below the eyes, and 
contracted at the occiput behind the eyes. Antenne filiform, 
nearly twice the length of the body, and clothed throughout 
with fine, stiff hairs, longest on the underside of the joints; the 
basal jomt elongate, nearly as long as the third, the third a very 
little longer than the fourth, and the rest very slightly diminish- 
ing in length. Thorax oblong, and armed on each side with a 
stout, porrect and acute spine. lytra plane above, shoulders 
armed with a short spine, tapering thence to the apex, which is 
truncated, with the external angles prolonged each into a spine. 
Legs moderately elongated, thighs slightly clavate, tarsal joints 
triangular, claws divergent. Mesosternum narrowed and ele- 
vated behind ; sockets of anterior coxee widely angular externally. 
Prymnosis bicuspis, n. sp. 
P. elongata, postice attenuata, supra plana, punctata, fusco-castanea, 
vertice, thorace et scutello linea dorsali flava; elytris apice trun- 
catis, angulis externis spinosis divaricatis, supra sublineatim pune- 
tatis, cinereo confluenter maculatis ; pedibus rufo-testaceis. Long. 
4 lin. 
Head very coarsely punctured, black, depressed between the 
antenniferous tubercles ; occiput constricted and marked with a 
yellow central vitta, which is continuous over the thorax to the 
scutellum. Antenne nearly twice the length of the body, 
clothed sparingly throughout with fine, stiff hairs; reddish. 
Thorax oblong, armed on each side with a stout spine, surface 
very coarsely punctured, dark castaneous, with a yellow central 
line. Scutellum yellow. Elytra narrowed in a straight line 
from base to apex; shoulders armed with a small spine; apex 
truncated, external angles produced each into a long slightly 
diverging spine; surface punctured partly in lines, dark casta- 
neous, sprinkled with grey confluent spots, which leave an 
oblique belt about the middle spotless. Body beneath shining, 
thinly pubescent ; thoracic segments coarsely punctured, black ; 
abdomen reddish, faintly punctured. Legs testaceous red, 
clothed with fine hairs. 
Santarem and Nga, 
