70 Mr. G. J. Arrow on 



excessively similar forms characterized by a peculiar difference 

 between the sexes. In the males the pygidium is very finely 

 rugose and quite opaque, while in the females it is shining 

 and punctured. All the species are bronzy and finely and 

 closely punctured above, the elytra a little less densely punc- 

 tured than the pronotum and entirely without striae. The 

 sides of the body are hairy beneath and the pygidium bears 

 scanty hairs. There is no sternal process and the front tibiae 

 are bidentate. 



EucMora aureola, Hope, described from a single male, is a 

 member of this group. Both sexes were found by Doherty 

 at Perak. It is distinguished from all the following species 

 by its very broad and conspicuous elytral membrane ; but all 

 the species of the group are so extremely close in their ex- 

 ternal characters that the examination of the genitalia of the 

 males is necessary for their certain discrimination. 



Anomala silama, sp. n. 



Yiridi-cuprea, prothoracis marginibus lateralibus vage pallidioribus, 

 corpore subtus femoribusque cupreo-flavis, tibiis tarsisque rufo- 

 cupreis ; elongato-ovata, convexa, corpore supra toto crebre 

 punctato, prothoracis angulis anticis acutis, paulo productis, 

 pygidio parcissime ciliato : 



<3 , clypeo toto rugoso, pygidio minutissime rugoso, forcipis lobis 

 dorsalibus brevibus, apice valde inflexis, subtus basi haud approxi- 

 matis : 



$ , clypeo dense punctato, pygidio modice, paulo transverse, punctato. 



Long. 22-23*5 mm. ; lat. max. 11*5-13 mm. 



Hob. N. Borneo : Silam (& B. J. Skertchley) . E. Borneo : 

 Mooijawa (H. D. Jensen). 



The colour is a deep coppery green like that of A. aureola, 

 Hope, but the lower surface and femora are yellowish, with a 

 slight metallic lustre, and the tibiae and tarsi fiery red. The 

 extreme lateral edges of the pronotum are also of a yellowish 

 tinge. The shape is more elongate than that of A. aureola or 

 of the two following species, and the front angles of the 

 thorax are a little produced. The clypeus is rugose in the 

 male and densely but distinctly punctured in the female. 

 The pygidium bears only a few inconspicuous hairs, and is 

 very finely granulated in the male, and punctured, not very 

 coarsely, in the female. 



Anomala posticalis, sp. n. 

 Obscure cuprea, femoribus castaneis, metallico-micantibus-, tibiis 



