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XVI. Gontrihutions to an Insect Fauna of the Amazon 
Valley (Coleoptera_, Cerambycidee) . By H. 
W. Bates^ F.Z.S., late Pres. Ent. See. 
[Bead 4th July, 1870.] 
The present memoir is a continuation of a former one on 
the Prionides (Trans. Ent. Soc. 1869, p. 37), and the 
classification, with trifling modifications, is that esta- 
blished by Lacordaire in the eighth and ninth volumes of 
his ‘‘ Genera des Coleop teres. 
Earn. CERAMBYCID.^. 
Section A. Eyes coarsely facetted. 
Sub-fam. (Emim. 
Antennae without spines, anterior coxae with their 
sockets lengthened externally, intermediate sockets 
open. * 
Genus Atenizus. 
Bates, Entom. Monthly Mag. iv. 28 (1867). 
(Charac. emend.) , Corpus parvum, sublineare, depres- 
sum, pubescens. Caput rotundatum, thorace latius, 
genis brevissimis, fronte convexa, vertice tuberculo magno 
instructo ; oculis magnis emarginatis, lobo inferior! ante 
tuberculos antennarum producto, superior! brevi ; palpis 
articulo terminal! conico, maxillaribus (?) elongatis, 
pendentibus. Antennae filiformes, hirsutae, articulo basal! 
apice infra dilatato. Thorax ovatus, depressus, inermis. 
Elytra linearia, apice rotundata. Pedes breves, lineares, 
tarsis posticis elongatis. Coxae anticse et intermediae 
subconicse, contiguse, exsertsc, acetabula antica extus an- 
gulata, intermedia aperta; lam.inse sternales inter coxas 
obsoletae. 
This is one of the genera which M. Lacordaire was 
unable to place in the rigid system of classification 
* That is, the mesothoracic epimera are inserted between the meso- 
and meta- thorax so far as to reach the orbit of the sockets. 
TRANS. ENT. SOC. 1870. — PART HI. (AUGUST.) 
