66 Mr. Charles J. Gahan's Revision of 



middle of the disc between the anterior and posterior transverse 

 grooves ; this elevation strongly and rather thickly punctured, the 

 lateral parts of the pronotum being less thickly punctured. Elytra 

 sparsely, but rather strongly, punctured for about two-thirds of their 

 length from the base. Scape of the antennae with two or three short 

 oblique ridges near the apex, the one nearest the apex being the 

 longest, and somewhat resembling the limiting carina of the open 

 cicatrice met with in the Mesodnx. 



Bah. Malacca. Type (?) in coll. Obertlmr. 



Chreonom a pcdlidiventris. 



Astathes pallidiventris, Thorns., Syst. Ceramb., p. 559. 

 Astathes tegrota, Thorns., 1. c, p. 560. 



Very closely allied to C. discoidalis, Thorns., and similar to it in 

 colour, the only characters serving to distinguish it being the some- 

 what more strongly raised, and less thickly punctured, elevation on 

 the middle of the pronotum, and the greater number — five or six — 

 of the short transverse ridges forming the rasp-like roughness near 

 the apex of the antenna! scape. In the male type the front of the 

 head is furnished with a cariniform tubercle similar to that 

 occurring in C. frontalis, Gahan, but much less strongly developed. 



Bab. Cochin China. Types in coll. Oberthlir. 



The type of pallidiventris is a male, that of i&grota, a 

 female ; and there can be no doubt that both belong to one 

 species. 



Ghreonoma nigriventris. 



Astathes nigriventris, Thorns., Syst. Ceramb., p. 559 (18G5). 

 Chreonoma nigriventris, Pasc, Trans. Ent. Soc. Lond., (3) 

 iii, p. 360 (1867). 



Hal. Malay Peninsula, Singapore (Wallace), Perak 

 (Ridley). 



This species is closely allied to C. discoidalis, Thorns., 

 but differs in having the metathorax and abdomen, black ; 

 and the centro-notai tubercle of the prothorax less closely 

 punctured. In the male, the head has a strongly developed 

 cariniform tubercle on the middle of the front : in the 

 female the front of the head is somewhat gibbous in the 

 middle, but is without a tubercle or carina. 



