427 
of the Amazon Valley. 
flexuosaj maculisque tribus basalibus interdum partim 
confluentibus, nigris ; antennis articulis Imo et 3-5 nigris, 
dense hirsutis, apice rufis glabris, 6-11 flavis. 
Long. 12-16 lin. ^ $ . 
Hah. — Amazons , general, but not common. Flying 
heavily along pathways in the forest. 
The description of Linnaeus applies to the Amazons 
insect, which belongs to the darker Guiana form. The 
figure of Olivier (No. 67, pi. vii. f. 48) seems rather to 
apply to the distinct South Brazilian form (L. Latreillei, 
White) . 
Genus Ceeagenia. 
Serville, Ann. Soc. Ent. Fr. 1834, p. 32 ; Lacord. Gen. 
ix. 158. 
1. Ceragenia hicornis. 
Ceramhyx hicornis^ Fabr. Syst. El. ii. 274. 
Cerambix striatusj Oliv. Ent. No. 67, pi. v. f. 31. 
Fulva, tomento sericeo-aureo vestita ; antennis articulis 
2-6 apice et 7-11 totis fuscis; thorace tuberculis duobus 
disci compressis, linea mediana, tuberculisque lateralibus 
nigris; elytris apice breviter truncatis, supra vitta mar- 
ginali, altera discoidali, et maculis duabus interioribus, 
nigris. 
Long. 8-9 lin. $ $ . 
Hah. — Amazons, general ; at sweet sap on trunks of 
trees, common. Olivier confounded this species with G. 
{Tradiyderes) striatus ; his description, however (No. 67, 
p. 27) applies exclusively to the Trachyderes . 
2. Ceragenia spinipennis, n. sp. 
C. hicorni simillima, minor, difiert solum colore paulo 
pallidiori et elytris apice utrinque longe unispinosis. 
Long. 7 lin. S $ . 
The form, sculpture, and markings are the same as in 
C. hicornis, bub the colour is decidedly paler, and the 
silky pubescence is paler golden. The apex of the elytra 
is briefly truncate, with the exterior angle prolonged 
into a rather long acute spine, which does not exist in 
any of the numerous specimens I have examined of G. 
hicornis. 
Hah. — Ega. 
