of the Amazon Valley. 147 



Genus Cosmotoma (Dej.), Blanchard. 



Blmchard, Histoire des Insectes, ii. p. 155 (1845) (description very im- 

 perfect). 



Syn. Beltista, Thorns. Classif. des Cerambycides, 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 antennae, 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 antennae — 

 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 

 laterat spines, and its surface has two large obtuse tubercles. 

 The elytra are clothed with long hairs instead of setae, 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 Un- <? • Hab, Rio Janeiro. Coll. Bakewell, 

 Bates, &c. 



The two following belong also to this genus : — 



(Edopeza guttigera. Oblonga, convexa, setosa, brunnea, nigro canoque 

 maculata. Caput cinereo-brunneum, vertice nigro quadrima<?ulato. 

 Antennae obscure ferrugineae, articulis (duobus basaUbus exceptis) 

 basi griseis. Thorax supra subinsequalis, spinis laterahbus 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 hn. <? . Hab. Mexico. Coll. 

 Pascoe. 

 (Edopeza apicalis. Oblonga, parum convexa, setosa, brunnea, sericea, 

 atro-purpureo variegata. Caput fuliginosum. Antennae robustae, 

 obscure ferrugineae. 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 lateral! nigro velutina. Corjius subtus griseo sericeum. 

 Pedes obscure ferruginei ; articulo primo tarsorum posticorum elon- 

 gato. Maris segmento ultimo abdominali sinuato-truncato. Long. 

 5 lin. <J . Hab. Guatemala. Coll. Pascoe. 



10* 



