302 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, 1892. 



Society ( 1891)^ I have pointed out the resemblances and the differences 

 between these two species — the two being- unquestionably very closely 

 related. I have, moreover, given a figure of the male of tricarinatua 

 taken from a specimen in the British Museum that was sent from 

 Madras. Mr. Gates had not seen this species ; otherwise no doubt 

 he would have recognised how nearly allied to it his sho2il(mdi is. 

 Again, in the paper above referred to I have mentioned the occurrence 

 of shoplandi at Calcutta. The specimen of it, however, that the 

 museum possesses from this locality differs slightly, though not to my 

 mind specifically, from one of Mr. Gates' typical examples. It will be 

 of great interest, therefore, to discover the variations to which the 

 species is liable, and to what extent specimens from other localities 

 bridge over the interval between it and tricar inatus. 



This new form, as already stated, is related to both tricarinatus and 

 shoplandi, but it may be recognised at once by the shortness of the 

 spurs on the tibiee of the posterior pairs of legs — the spurs being 

 remarkably long in the other two. From tricarinafus it may be 

 further separated by the entire absence of lateral tergal keels and 

 by its much longer dactyli, &c. In both these particulars, too, it 

 differs from the Burmese example of s/wplandi, but not from the 

 above-mentioned Calcutta specimen in which the dactyli are longer, 

 (though not so long as in scaher) and there are no traces of lateral 

 tergal keels. It is, however, much more granular than both these 

 individuals, has only 8 keels on the 3rd caudal segment and from 

 17 to 18 pectinal teeth, whereas in shoplandi there are 22 pectinal 

 teeth and 10 keels on the third caudal segment. 



The most notable points of resemblance and of difference between 

 the three may be more clearly shown as follows : — 



A. The 2nd caudal segment with 10 keels ; the last abdominal 

 sternite with 4 keels. 



a The spurs on the posterior tibiae very long, considerably longer 

 than the hairs that surround them ; dactyli shorter, the movable 

 not more, usually much less, than twice the length of the 

 hand-back; tail much thicker, pectinal teeth 21-25 (usually 

 22-23). 

 a Tergites with distinct lateral keels composed of three or 

 four granules ; 3rd caudal segment with 8 keels, with, at most, 



