148 Annals of the South African Museum. 



and Malmesbury specimens of capcnsis. I therefore prefer now to 

 reduce fnscipcs to the rank of a sub-species or local race of 0. 

 capcnsis. 



The specimens in the South African Museum may then be grouped 

 as follows : 



A. Principal Form: 0. capcnsis (Herbst). 



Scorpio capemis, Herbst., Naturg. d. Ungefl. Ins., iv., p. 62, pi. v., 

 fig. 2, 1800. I have not seen this work. 



Opisthophthalmus pilosus, C. L. Koch, Die Arach., iv., p. 91, fig. 

 309, 1838, adult 3 ; Kraepelin ad partem, Revis. d. Skorp., ii., 

 p. 100, 1894, ad. $ , non ? . 



0. maxillosus, C. L. Koch, ibid., p. 93, fig. 310, young. 



0. latro, Thorell, Atti. Soc. ital., xix., p. 225, 1877, $ . 



0. capensis, Thor., ibid., p. 227, $ and 5 ; Kraepelin, loc. cit., 

 p. 97, $ and juv. $ ; Pocock, Ann. Mag. N. H. (6) xvii.,p. 234; non 

 C. L. Koch, loc. cit., p. 89, fig. 308. 



Characters. Legs unicoloured, ochraceous (becoming reddish 

 yellow in old spirit specimens). Terminal tooth of superior caudal 

 crests enlarged and often spiniform in segments 2-4 ; spiracles with 

 parallel edges, or somewhat wider in the middle than at the ends ; 

 number of pectinal teeth 10-13 in the ? , 12-15 in the $ ; outer 

 lobe of tarsus of fourth leg with 3-4 spines. 



Distribution. South- Western corner of Cape Colony (Cape, 

 Stellenbosch and Malmesbury Divisions). 



(a) 10 ad. 5 and 12 ad. $ from round about Caps Town. They 

 live in deep burrows, and under stones, and are often extremely 

 common on the hillsides (Signal Hill, Table Mountain, Camps Bay, 

 Wynberg Hill) ; also in level sandy plains (Constantia area). No. 

 of pect. teeth in 5 10-13, in $ 12-15 ; length of carapace in 5 

 lOi- 13f mm., in $ 9^-12f mm. ; external lobe of tarsus of fourth leg 

 with 4 spines, rarely with only 3 (in 9 per cent, of cases) ; this tarsus 

 occasionally (in 7 per cent, of cases) provided with an external inferior 

 spine in addition to the 4 on the terminal lobe ; penultimate segment 

 of the abdominal sterna, with a few weak mesial granules in the ? , 

 but coarsely granular in the adult J . Ground-colour of palps and 

 carapace ochraceous, the cauda ochraceous in the $ , darker in 

 the $ . Spiracles very narrow with parallel edges, rarely somewhat 

 wider in the middle than at the ends. 



(b) 2 ad. 5 from Simonstown, Cape Peninsula (F. Purcell) : No. 

 of pect. teeth 10-11 ; length of carapace llf mm. ; external lobe of 

 fourth tarsus with 3-4 spines ; spiracles narrow with parallel edges ; 

 coloration and sterna as in the Cape Town specimens. 



