and Species of Longicorn Coleoptera. 31 



Onychocerus albitarsis. 



O. ater, grisescente-brunneoque variegatus ; prothorace lateribus 

 productis, disco trituberculato ; antennis glabris tibiisque an- 

 nulatis, tarsis albidis. 



Brasilia. 



Black, middle of the third antennal joint and base of the fourth, 

 head, prothorax, except the three tubercles, base and posterior 

 half of the elytra, middle of the tibiae, and tarsi, greyish white ; 

 elytra with a double series of large black granulations, the middle 

 and patch posteriorly reddish brown. 



Length 6 lines. 



The antennae have no trace of the hairy fringe which forms so 

 beautiful an appendage to the terminal joints of the other two 

 well-known species : in the one described by Mr. Chabrillac, no 

 mention is made of it. I am indebted for my specimen to Fred. 

 Bond, Esq. 



Dysth.93ta. 



Head rather narrow; eyes broadly emarginate ; labrum large ; 

 mandibles obtuse ; external maxillary lobe elongate ; antennae 

 somewhat approximate, longer than body, setaceous, the third and 

 fourth joints longest, the rest sub equal (second excepted); palpi 

 elongate, the terminal joint obtuse ; prothorax quadrate, irregular, 

 the sides spined ; elytra broadest at the shoulders, decreasing 

 posteriorly ; legs rather long, the tarsi not dilated, the first joint 

 longest. 



With no very salient characters, this genus is quite different in 

 habit from any other with which I am acquainted. Its affinities 

 are doubtful. 



Di/sthceta anomala. (PI. II. fig. 6.) 



D. pubescens, rufo-brunnea, albo-fuscoque variegata ; elytris 

 basi parce, apicem versus, remote punctatis. 



Australia (Moreton Bay). 



Pubescent, light reddish brown, varied with dark brown and a 

 little white, in irregular lines shading into each other ; on the 

 prothorax these lines are longitudinal, two dark ones particularly 

 on each side, and a paler one in the middle ; on the elytra, which 

 are sparingly punctured at the base and becoming even less so 

 towards the apex, there are five series of transverse bands, more 

 or less zig-zag, of which the middle one is formed like the letter 

 W, with the anterior portion of it picked out with white ; legs 

 and under surface with a greyish pubescence ; mesosternum 

 bilbbed posteriorly ; elytra obliquely truncate at the apex. 



Length 7 lines. 



