34 Mr. C. J. Gahan on Longicorn Coleoptera. 



Dark brown, nearly black. Head with a fulvous-white 

 pubescence. Prothorax about as long as it is broad in the 

 middle, feebly rounded at the sides, irregularly rugose above, 

 with live pubescent whitish lines, one median and two towards 

 each side. Elytra very strongly and very closely punctured, 

 with whitish pubescent spots somewhat irregularly and thickly 

 spread on the sutural region, arranged in a row at the lateral 

 margin, and forming a few short lines towards the apex. 

 Body underneath with a slight greyish pubescence. Pro- 

 sternal process strongly arched, posteriorly declivous. Meso- 

 sternal process almost horizontal, feebly declivous anteriorly. 

 Antennse surpassing the elytra by about the last joint, with 

 the third and fifth joints subequal, each barely longer than 

 the scape, the fourth shorter, the sixth to tenth gradually 

 increasing, the eleventh about half as long again as the tenth, 

 with the joints from the fifth to the tenth compressed on the 

 inner side and each angulately produced at the apex. 



I have placed this species in Xoanodera, rather to indicate 

 its affinities than because I believe it to strictly belong to that 

 genus. With but a single specimen before me I should not 

 feel justified in creating a new genus in such a group as the 

 present. 



Rhytidodera robusta, sp. n. 



Pube grisea fulvaque sat dense obtecta ; prothorace supra valde 

 irregulariterque rugoso, disco tuberculis duobus aculeatis ; elytris 

 pube subplagiatim disposita, apicibus subrotundatis, sutura 

 spinosis ; antennis ( $ ) dimidium corporis vix excedentibus. 



Long. (?) 34, lat. 9 mm. 



Ilab. Bombay. 



Prothorax strongly and irregularly rugose above, with two 

 of the short ridges, just in front of the middle of the disk, so 

 much raised as to appear like two wedge-shaped tubercles, 

 very slightly constricted at the apex, with an obtuse tubercle 

 on each side close to the anterior border. Elytra with a 

 pubescence partly fulvous, partly grey, somewhat denser in 

 places, with the apices rounded or subtruncate and each with 

 a moderately strong spine at the suture. 



This species most nearly resembles R. Integra, Kolbe, but 

 is much larger, and is distinguished by the structure of the 

 prothorax and the more prominent spine at the sutural apex 

 of the elytra. 



[To bo continued.] 



