262 Mr. (j. J. Arrow on Se.vual Dimorphism in 



females of these insects) mentioned by the describer 

 confirm my view. 



The comparison of this species with Redtenbacher's 

 Fo2nllia sulcata is unfortunate, as that insect is a true 

 Fopillia, whereas the present one, as indicated by the naked 

 pygidium and the claws of the middle feet divided in both 

 sexes, has not any affinity with that genus. It belongs to 

 the group of Anomalas represented by A. iris, Candeze, 

 and is intermediate between that species and A. lateralis, 

 Hope. It is also interesting as a link between the Asiatic 

 and American Anomalas, showing an evident relationship 

 both in structure and appearance, as well as in the fact of 

 dimorphism, with the Mexican insects just described. 



This insect has been made by Dr. Kraatz the type of a 

 new genus, under the name oi Ischnoimpillia cxarata, upon 

 the strength of characters which differentiate it from the 

 genus Fopillia, but in no way distinguish it from Anomala. 

 Fopillia rtigicollis, Newm., also referred to Ischnopopillia 

 by Kraatz, is the insect, Anomala lateralis, lio'pe, mentioned 

 above. 



The name cxarata is pre-occupied in the genus Anomala, 

 and this species must accordingly be called A. cinnaharina. 

 This name has been more recently given by M. Fairmaire 

 to another insect which must therefore be re-named. I 

 propose to call it Anomala fairmairci. 



In 1891 M. Fairmaire announced i\\dX Anomala rufozonula 

 and A. rufopartita, which had been described on two dif- 

 ferent occasions by himself, were the male and female of the 

 same species. The British Museum contains a long series 

 of this insect, showing an almost uninterrupted gradation 

 from the form rufozonula, in which the insect is wholly 

 black with the exception of an orange band across the 

 elytra, to one in which the elytra and prothorax are AvhoUy 

 orange except a very narrow black sutural line and patch 

 in the centre of the thorax, rufopartita being intermediate 

 between these forms. Both sexes appear equally variable, 

 the dark rufozonula being represented in the national 

 collection by females as well as males, whilst the extreme 

 light form referred to, and one of the intermediate varieties 

 connecting it with rufopartita (considered by M. Fair- 

 maire to be the female) are males. The only colour dif- 

 ference exhibited by all our specimens is in the abdomen, 

 which in all the males is entirely black, whilst in none of 

 the females has the orange quite disappeared, but even 



