306 Mr. H. W. Bates on Crranihi/rnhv 



Genus Cycnidolon. 

 Thomson, Syst. €eramb, p. 217; Lacord, Gen. viii. 333. 



The third and sometimes the fourth antonnal joints in 

 the cT are greatly thickened, fusiform or oval, and 

 carinate in both sexes ; femora abruptly clavate, and the 

 hind pair bidentate at the apex; tibia) carinate. 



1. Cycnidolon Batesianum. 



Ihidion Batesianum, White, Cat. Longic. Brit. Mus. 

 p. 230, pi. vi. f. 6. 



Cylindricum, nigro-fuscum; elytris dimidio apicali 

 cinereo-pubescenti, antice fascia tenui testaceo-alba mar- 

 ginato, dimidio basali nitido, macula triangulari laterali 

 ante medium, apice longe unispinosis; antennis pallido 

 rufo-testaceis, articulo 3io a basi gradatim incrassato, 4to 

 ovato {$)', pedibus testaceo-rufis. 



Long. 3j lin. ^ . 



I do not find a female example of this species among 

 my series. 



Hah. — River Tapajos and Ega. 



2. Cycnidolon hinodosum, n. sp. 



C. Batcsiano valde affine; differt ((^) articulo 3io 

 antennarum basi pedunculate abrupte clavato, 4to etiam 

 clavato sed pedunculo breviori ; elytrorum fascia obliqua 

 albo-testacea a parte cincrea bene distante. 



Long. 2f lin, cJ. 



Ilah. — Ega. 



3. Cycnidolon approximatum . 



Ihidion approximatum, White, Cat. Longic. Brit. Mus. 

 p. 231. 



A C. Batesiano differt articulo 4to antennarum haud 

 inflate, lineari, macula fasciaque elytrorum apud latera 

 approximatis, a plaga postica cinerea distautibus. 

 ? . Articulis 3-4 antennarum linearibus. 



