304 JOURNAL. BOMBAY NATURAL HISTORY SOCIETY, 1892. 



The males of tlie series from Madras were clearly not quite adult. 

 Another differential character for this species, which I did not before 

 notice, is the presence of only two setigerous pores on the upper 

 surface of the base of the immovable dactylus, in the other species 

 of the genus there are typically three of these pores, 



(5) Scorpio swammerdami Simon. 



Buthm afer,Q.¥.OQh., Die. Arachn., iii, pp. 17-18, fig. 175 (not 

 afer of Linn.) 



Heterometnis swammerdami, Simon, Rev. Mag. Zool., 1872, p. 56, 

 pi. vi, fig. 3. 



Panninns aepsr, Thorell, Ann. Soc. Ital. Sci. Nat., six., pp. 199- 

 202 (pp. 125-128 of Extract), 1876. 



Pandinus kochii, Karsch, Mitth. Munch, ent. Ver., 1879, p. 127. 



Scorpio lucidipes, Simon, Bull. Soc. Zool. Fr., x, p. 38 (1885). 



In the Ann. Mag. Nat. Hist., 1890, pp. 237-241,. I have already 

 explained my reasons for giving the above synonymy ; and it is need- 

 less here to repeat what was there sa id with regard to the sexual 

 characters of this species and of the variations it is subject to during 

 growth. 



This is the largest Indian Scorpion, attaining a length of 1 76 milli- 

 metres (about 7 inches). It may be easily recognised by the great 

 length of the tail, this organ in the adult being more than four times 

 the length of the cephalothorax. In all the other Indian species 

 known to me the tail is less, sometimes much less than'four times as 

 long as the cephalothorax. I have seen examples of this species from 

 Ceylon, Madras, Coonoor and Burdwan. 



I have added afer of C. Koch to the synonyms of this species, for 

 this author's figure appears to me to agree far better with swammer- 

 dami than with rcBseli of Simon — the large W. African species to 

 which Simon referred it. C. Koch may have confounded the two 

 species, but his figure at least is that of sivammerdami. 



(6) Scorpio fuMpes C. Koch. 



Scorpio afer, Herbst Ungeflugelt. Ins., iv. Skorpionen, pp. 38-42, 

 pi. i, fig. i. (1800). 



C. Koch, Die Arachniden, iv, p. 45, fig. 278 (1838). 



