Classification of the Coleopterous fainily Endoniychidae. 3 



but its presence is invariably indicated by a small mem- 

 branous lobe placed at the middle of that margin and 

 connected with the scraping edge beneath. 



I have followed in the main the order of genera adopted in 

 the most important work upon the family, the admirable 

 monograph by Gerstaecker. The reversed order of Cziki's 

 catalogue has no discoverable advantage. 



Four genera introduced into this family by Blackburn 

 may be ehminated altogether, two of them belonging to 

 long-established genera of other families, and the others, 

 although correctly referred to the Endoniychidae, being 

 redundant. Of the two former, Dyscerasphorus laticeps 

 Blackb., is the cosmopolitan Coluocera maderae Woll., and 

 Eleothreptus punctidatus Blackb., is a species (the second 

 now loiown from Australia) of the genus Aphanocephalus . 

 C ranter ophorus clavicornis Blackb., is an Encymon exceed- 

 ingly near the common E. immaculatus, but with red femora. 

 Finally Idiophyes is a synonym of the genus Exystna. 



It may be noted here that the Ceylonese " Lycoperdina " 

 glabrata, of Walker, is a species of the Heteromerous genus 

 Leiochrodes. 



Genera Haploscelis and Hybopterus. 



The name Cymones is used in Cziki's catalogue for five 

 Madagascar species which do not include C. sharpi Gorh., 

 the insect to which alone the characters assigned to Cymones 

 apply and which is a synonym of Hybopterus jAagiicolli^ 

 Fairm. Cymones is therefore a superfluous name and the 

 five species should be referred to Haploscelis, a genus of 

 strangely protean form, distinguished by the prosternum 

 being rather wide between the coxae but not produced be- 

 yond them . Haploscelis helopioides Gorh . , seems to have been 

 based upoii two specimens of different species, the female 

 probably belonging to H. scutatus Fairm. Fairmaire says 

 of the latter " femurs anterieurs inermes," e\ddently meaning 

 the tibiae. These are armed as usual in the male. 



There is a peculiar feature in the male of Hybopterus 

 which has not been noticed, viz. a delicate hooked filament 

 at the extremity of the hind tibia on the inner side. This is 

 evidently the homologue of the tuft of hairs found in the 

 same position in Haploscelis atratus Klug, and other species, 

 and indeed may be composed of long hairs in very close 

 contact. 



