52 Mr. C. J. Gahan on new Species of Longicornia 



This variety bears the manuscript name Ploccederus niger, 

 Chevr. 



Pacliydissus similis, n. sp. 



Hab. India and Ceylon. 



This species is formed for the reception of individuals 

 having so close a resemblance to P. indutus, Newm., that it 

 would be impossible to distinguish them by merely examining 

 them from above. On looking at the underside of the head 

 a transverse groove is seen to cross it from cheek to cheek ; 

 in P. similis this groove is either perfectly straight, or, if at 

 all curved, has the curvature directed slightly forwards ; in 

 P. indutus the groove is somewhat deeper and is strongly 

 enough bowed backwards. I can find no other character of 

 any value for distinguishing the two species, and should not 

 have attributed so much importance to the character of the 

 intergenal groove had I found both forms occurring indis- 

 criminately in specimens from the same locality. But 

 having picked out all the specimens, seventeen in number, 

 with a straight intergenal groove, I found that they were with- 

 out exception either from India or Ceylon ; those specimens, 

 on the other hand, with a backwardly bowed groove were 

 from some one of the following localities : — Philippine Islands, 

 Siam, Sumatra, Java, Borneo, or other island of the Malay 

 Archipelago. One specimen was ticketed Ceylon and one 

 Hong Kong. 



Xoanodera regularis, n. sp. 



Nigro-fusca ; flavo-cineroo-pubeseens ; prothorace supra subnudo ; 

 disco longitudinaliter et regulariter costato ; elytris pube flavo- 

 cinerea dense obtectis, singulisque plaga laterali nuda, nigro-fusca, 

 valde punctata. 



Long. 21, lat. 6 mm. 



Hab. N. India and Burmah. 



Head with a somewhat sparse tawny pubescence. Pro- 

 thorax rather sparsely pubescent above, thickly enough pubes- 

 cent at the sides ; the disk with four or more straight and 

 well-marked longitudinal ridges. Scutellum and elytra with 

 a close yellowish-grey pubescence ; with a dark brown, 

 strongly and reticulately punctured, nude space at the side of 

 each elytron between the base and the middle, and with a 

 small nude spot less strongly punctured on each side of the 

 scutellum. The apices of the elytra obliquely truncate, with 

 the angles shortly dentate. Legs and underside of the body 



