of the Group Cerambjcinas. 21 



protliorace lateraliter ia medio obtxisc angulato, dorso omnino 

 fortiter irrcgulariterque rugoso ; elytris pube sericeo-aurata non- 

 nihil miitabile obtectis, apicibus rotundatis, inermibus ; processu 

 prosterni postice verticaH, acetabulis anticis extus angulatis ; 

 aiitennis ( J' ) corpore multo longioribus, articulis tertio quartoque 

 valde iucrassatis, tertio quam primo paullo longiore et crassiore, 

 primo et quarto subaequalibus, quinto minus fortiter incrassato, 

 teitio subtequali. 

 Long. 56, lat. 17 mm. 



Hab. N. India, Allaliabad (/. G. Bowring, Esq.). 



The single specimen (in the Museum collection) of this 

 distinct and magnificent species is in a rather damaged con- 

 dition. There are but ten complete joints to the antennas, 

 and these together surpass the body by about a third part. 

 The fine silky golden -yellow pubescence gives rather feeble 

 moire reflexions on the elytra. Owing to the shortness and 

 great thickness of the third and fourth joints of the antennae 

 1 was at first inclined to place the species in PacJit/dt'ssus ■ 

 but the size and remaining characters seem to fit it better for 

 Neocej-amhyx. As in the true PachycUssus^ we see that even 

 amongst evidently nearly related species of the same genus 

 the third joint may vary considerably in length and thickness. 

 It must be admitted tliat Neocerambyx — taking N, parisj 

 Wied,, as the type — cannot by any hard-and-fast characters 

 be differentiated from Fachydissus. The eyes offer no dis- 

 tinguishing character, and the anterior cotyloid cavities may 

 in some species of FacJtydissus, and even in some specimens 

 of the same species, e. g. F. incipennis, be angulate externally, 

 while in others they are completely closed. It was unfortu- 

 nate that Lacordaire should have taken the characters of the 

 eyes and of the anterior coxal cavities as the basis of his sub- 

 division of this group. 



Imhriusl niandihularis, sp. n. 



Fuscus, griseo-cinereo-pubescens ; mandibulis Ion gis, valde curvatis ; 

 oculis supra approximatis, subtus late distantibus ; capite pone 

 oculos gradatim angustato ; prothorace latitudine paullo longiore, 

 iitrinque leviter rotundato, supra transvcrsim irrcgulariterque 

 plicato ; elytris minute cont'ertimque punctulatis, ciuereo-pubes- 

 centibus, singulis liueis tribus vel quatuor glabris, obsolete 

 elcvatis, apicibus conjunctim et subacuminate rotundatis ; an- 

 tennis ( d ) corpore duplo longioribus, articulis a tertio ad decimum 

 ((juarto multo breviore oxcepto) suba^qualibus, articulo uudecimo 

 longissimo ; antcnnis ( $ ) corpore paullo longioribus. 



Long. {(S) 24, lat. .^j ; long, maudib. 3| mm. 



Hub. Penantc. 



