of the Amazon Valley. 147 
Genus Cosmotoma (Dej.), Blanchard. 
Blanchard, Histoire des Insectes, ii. p. 155 (1845) (description very im- 
perfect). 
Syn. Beltista, Thoms. Classif. des Cérambycides, p. 16 (1860). 
The present group differs from the neighbouring genera by a 
multitude of characters; but the length and shape of the basal 
joint of the antenne, besides many other minor features, leave 
no doubt that its true position is in the Leiopodine group. The 
chief peculiarities reside in the ornamentation of the antenne— 
a feature that reappears here and there throughout the family 
of Longicorns, in groups which have otherwise no resemblance— 
the fourth joint in Cosmotoma having a thick brush of hairs 
attached to its upper surface, and the second and third having 
thin pencils of hairs at their tips, besides being clothed with a 
few long hairs, like the remaining joints. The thorax has a thick 
conical protuberance behind the middle, in the place of the 
lateral spines, and its surface has two large obtuse tubercles. 
The elytra are clothed with long hairs instead of sete, and the 
centro-basal ridges, which are very thick and large, are also 
maculatis. Pedes brunnei, griseo annulati. Maris segmento ventrali 
apicali semicirculariter emarginato, dorsali profunde inciso ; tarsi an- 
tice simplices. Long. 7 lin. ¢. Hab. Rio Janeiro. Coll. Bakewell, 
Bates, &c. 
The two following belong also to this genus :— 
CEdopeza guttigera. Oblonga, convexa, setosa, brunnea, nigro canoque 
maculata. Caput cinereo-brunneum, vertice nigro quadrimaculato. 
Antenne obscure ferruginez, articulis (duobus basalibus exceptis) 
basi griseis. Thorax supra subinzequalis, spinis lateralibus magnis 
acutis; dorso brunneo maculis obscurioribus; lateribus utrin- 
que ante spinam macula nigro velutina cinereo marginata notatis. 
Elytra oblonga, obtuse truncata; dorso leniter carinata, punctata, 
setosa, setis e fasciculis setarum breviorum orientibus ; brunnea, ma- 
culis liturisque nigris varia et guttulis canis (una majore utrinque 
prope apicem) ornata; lateribus medio griseis nigro punctatis. Corpus 
subtus griseum, sericeum. Pedes nigricantes, griseo annulati; arti- 
culo primo tarsorum posticorum elongato. Maris segmento ultimo 
abdominali emarginato. Long. 5 lin. ¢. Hab. Mexico. Coll. 
Pascoe. 
Cidopeza apicalis. Oblonga, parum convexa, setosa, brunnea, sericea, 
atro-purpureo variegata. Caput fuligimosum. Antenne robuste, 
obscure ferruginee. Thorax brunneus, supra vitta latissima dorsali 
atro-purpurea sericea cinereo guttata; spinis lateralibus conicis. 
Elytra oblonga, transverse late sinuato-truncata, breviter fulvo setosa, 
passim punctata, brunnea plaga magna scutellari maculis lateralibus 
basalibus fasciaque pone medium atro-purpureis, apice utrinque macula 
triangulari laterali nigro velutina. Corpus subtus griseo sericeum. 
Pedes obscure ferruginei; articulo primo tarsorum posticorum elon- 
gato. Maris segmento ultimo abdominali sinuato-truncato. Long. 
Dlin. g. Hab. Guatemala. Coll. Pascoe. 
10* 
