Beetles of the family Rutelidss. 265 



male appears to be rather more abundant than the female, 

 and is quite unmistakable from its deep purple hue. 



Two peculiar insects were described by Blanchard under 

 the generic name Adoretosoma and placed after the genus 

 Adoretus, but these appear in the Munich Catalogue in the 

 genus Anomala. These are A. clcgans and A. fulvivcntrc, 

 both Indian species. At least three closely related species 

 have been described from China by M. Fairmaire, who has 

 assigned them to the genus Fhyllopertha under the names 

 of chromatica, tenuelimhata and virgulata. It is possible 

 that others of the new species placed in the same genus 

 by M, Fairmaire may be congeneric, but in the absence of 

 structural characters this cannot be determined from the 

 descriptions, P. tenuelimlata and a closely related new 

 species afford further examples of sexual dimorphism, and 

 it seems likely that all the species mentioned above have 

 been described from representatives of one sex only, but 

 with the exception of these two I have not been able to 

 find both sexes of any of them. 



There can be no doubt as to the advisability of restoring 

 this group to generic rank, and the addition of the sexual 

 characters to those given by Blanchard will render the 

 genus very easily recognisable. 



Adoretosoma, Blanch., Cat, Col. Ent. Paris, 1860, p. 234. 



Ungiiiculis gracilibus et longissimis, pedum anteriorum medior- 

 umque externis fissis, $ anteriorum regulariter curvatis, apice equal- 

 iter divisis ; ^ pedum anteriorum tarsis incrassatis, unguiculo externo 

 quam interne multo longiore, recto, post medium spino minutissimo 

 armato, tibiis anterioribus brevioribus dentibusque minoribus valde 

 approximatis, 



Phyllopertha tenuelimhata, Fairm., referred to above was 

 described in the Ann. Soc. Ent. Franc, for 1889, p. 24; and 

 in the Comptes Rendus, Soc. Ent. Belg., 1891, p. cciii, M. 

 Fairmaire described another new species under the same 

 name. From this our species must be carefully distin- 

 guished. As the first species will become Adoretosoma 

 tenuelimhcitum, the second may perhaps be allowed to 

 retain the name inadvertently given to it. M. Fairmaire's 

 description of the former insect applies to the female only, 

 which is a pale yellow insect with a very narrow green 

 sutural line and a large green spot in the middle of the 

 thorax. The male has the vertex of the head, the disc of 



