BUTHUS. 25 



form of the species, because its name appears to have been derived 

 from the Tamil race of South India, and Fabricius is known to have 

 received specimens of other Arthropods, e.g. Polydesmus stigma 

 and Heteropoda regia, from Tranquebar on the Coromandel coast. 



Subspecies concanensis, nov. 



Darker in colour and smoother than typical form. Upper side 

 of trunk greenish or reddish brown, approaching black, paler at the 

 sides. Legs, chelae, and tail, with the exception of the inferior 

 keels, flavous or reddish yellow. Terya finely granular at sides, 

 anterior marginal ledge smooth throughout ; keels quite smooth, 

 shining, the laterals passing externally into a pair of irregular 

 smooth crests resembling a dried stream of tar ; inferior keels of 

 last abdominal sternum smooth, also of 1st and 2nd and sometimes 

 also of 3rd caudal segment ; all the caudal keels and intercarinal 

 spaces of tail less granular than in typical form. Pectinal teeth 

 29-32 in $ , 30-35 in <S . Length up to 91 mm. $ ; 77 inm. rf . 



Loc. Katnagiri in the South Konkan (Drew). 



Subspecies sindicus. nov. 



Paler yellow than the average B. tumulus typicus, the keels of 

 the abdomen, carapace, and underside of tail blackish ; an indis- 

 tinct dark spot on each side of the terga in front of the lateral 

 keel. Terga much more coarsely granular than in the typical 

 form, the keels distinctly granular, the laterals breaking up an- 

 teriorly in coarse granules, which become lost amongst the general 

 coarse granulation of the dorsal surface. Pectinal teeth more 

 numerous than in the typical form : 31-34 in $ ; 34-39 in c? 

 Length up to 93 mm. $ ; rather smaller in J . 



Loc. Valley of Lower Indus : Kelat frontier in Upper Sind 

 (Kemball); Hyderabad and Kotri(-%cm); Sujawal and Jati in the 

 Karachi district (Kemball). 



Subspecies gujaratensis, nov. 



Eeplacing B. sindicus to the south. Coarsely granular as in that 

 subspecies and in B. gangeticus, darker in colour than the former, 

 the trunk being often nearly black ; tail thinner and less thickly 

 hairy than in B. gangeticus. Pectinal teeth fewer in number than in 

 B. sindicus : 27-33 in $ ; 31-36 in rf . 



Distribution. Karaghora in Katty war (Bull-ley) ; Panch Mahals 

 in Xorth Guzerat ( Wallinger), thence spreading south-eastwards 

 as far as Khandes (Madan). 



Subspecies gangeticus, nov. 



Represented by both dark and light forms ; the former deep 

 reddish brown with black keels ; the hand and brachium of chela 

 and also femora and patellae of legs partially infuscate; paler form 

 coloured like B. tamulus typicus. Terga coarsely and closely 



