104 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. %l t 



Sculpturing of the trunk, limbs and tail like that of the Persian 

 species P. crassicauda, the inferior and inferior lateral intercarinal 

 spaces of the tail finely granular. Tail increasing in width to the 

 middle of the third segment, the fourth either a trifle narrower 

 than the third ( 9 ) or equalling it in width ($), the fifth segment 

 never so wide as the second, and in the 9 a little narrower than 

 the first, in the $ equal to the first in width or a trifle wider ; the 

 lateral keels of the fifth as well as of the other segments not so 

 strongly elevated as in P. crassicauda; the first segment a little broader 

 than long, the second a little longer than broad (<£, 9 ) ; the third as 

 broad as long { $), or a little longer than broad (9) ; the length of 

 the second in the 9 just about equalling the width of the third. 



Choice resembling those of P. crassicauda. Pectinal teeth ; 9 * 

 20*25, average about 23 : <£, 28*33, averaging about 30. 



Measurements in millimetres of $ {Type). Total length 76, length 

 of carapace 8, of tail 47, width of first segment a little over 6, of third 7. 



Locality. — Scinde, Haidarabad, and Kotri (Type) (G. M. Ryan); 

 also a large number of examples from Haidarabad, Kashmir Bund* 

 and the Khelat Frontier (A. V. Kemball). 



Differing from the Persian and Mesopotamian P. crassicauda, of which 

 perhaps it will ultimately prove to be a sub-species, in its pale colouring, 

 the typical crassicauda being a black or deep brown species. The colour- 

 ing of P. finitimus at all ages is very like that of the .North Egyptian 

 form P. libycus, except that in young examples of the former the infus- 

 cation of the end of the tail is much fainter, the vesicle being quite pale, 

 the pigment gradually increasing in intensity with age, whereas in P. 

 libycus the pigment in the young is much stronger than in the adult. 



The genus Prionurus, which ranges from Morocco to Egypt in 

 Africa and thence through Arabia and Persia, is new to the Indian 

 fauna. It seems probable that the form here described is the most 

 easterly representative of the genus. 



Genus Buthus, Leach. 



(2.) — BUTHUS ODONTURUS, Sp. H. 



Closely allied to Buthus dorice, Thor., from Teheran in Persia, but 

 differing in the following particulars : — 



The sternal plates of the abdomen and the coxae of the cephalo- 

 thoracic appendages are covered with fine granules ; and there are 



