264 li. S. GORHAM 



from Garin Gheba is only 10 millim. and the temale from Bhamò 

 is l^ mm. The colour is also very variable. Grotch's />. Wliilei 

 is a unique male, of a pale ferruginous colour, with black legs 

 and antennae. It in no way differs from male examples I have 

 seen from Assam. Lewis' D. bucculenta are pitchy with a dark 

 aeneous tint. Our examples are all ferruginous, the two smaller 

 ones have black legs, while the two larger ones have them 

 concolorous with the body. That from Garin Gheba has black 

 tips to the elytra ; and I have seen other variations. I may 

 here remark that the asperation of the internal side of the 

 front (and sometimes of the middle) femora, is a ready way of 

 distinguishing the male sex, as the sexual organs are not always 

 observable, and this character holds good in other genera as in 

 CaUilaiiguria, where the thorai^es are not so differentiated. 



The sexual characters of this genus are very curious. INIr. 

 G. Lewis has noticed some of them under his description of 

 D. bucculenta, but he has mistaken the sexes. The male has the 

 thorax longer than wide, contracted before and behind; the 

 head with the cheeks not much widened and synnnetrical ; the 

 legs are longer than in tlie female, and their front tarsi do not 

 have the joints much dilated ; in addition I observe that the 

 femora of the front legs in the male are roughened, have two 

 almost carinate lines of small spines, which coalesce behind. 

 The examples which have the left-cheek asymmetrically widened , 

 the shorter sub(|uadrate thorax, and very strongly dilated front 

 tarsi, are the females. 



I have examined the genitalia; and these examjiles have also 

 smooth front femora, and shorter legs as might have been an- 

 ticipated. 



Fowler appears to have also mistaken the sexes, but still 

 preferred the female for the type of his species, which is liow- 

 ever identical , as I believe, with other e.xamples I have seen 

 from Assam, and with those here recorded from Burma. 



