392 Mr. R. I. Pocock on South-African Scorpions. 



5. Uroplectes flavoviridis, Peters (Mon. Ak. Wiss. Berlin, 

 1861, p. 516), from Tette. — The position of this species is 

 also one of perplexity. The only other species, so far as I 

 know, that have been accredited with a falciform basal pectinal 

 tooth are U. planimanus and U. lunulifer ; but these certainly 

 differ from flavoviridis in having the lower side of the tail 

 distinctly carinate. 



6. Lepreus pilosus, Thorell (Act. Soc. Ital. xix. p. 118, 

 1876), from Caffraria, the type of the genus Lepreus, without 

 much doubt falls in section 1 of the table, but certainly differs 

 from the forms enumerated there in having the median infe- 

 rior keels obsolete on the first, second, third, and fourth 

 segments of the tail. 



7. Lepreus otjimbinguensis, Karsch (Mittl. Munch, ent. 

 Ver. 1879, p. 125), from Otjimbingue, near Walfisph Bay. — 

 Judging from the description I should say that this species 

 belongs to section 2 of the table ; but it certainly differs from 

 the species there mentioned in having the median part of the 

 terga black and not yellow. 



8. Lepreus lunulifer, Simon (Ann. Soc. Ent. Fr. 1887, 

 p. 375), from Namaqua or Damaraland, is evidently very 

 nearly allied to L. planimanus, Karsch. Kraepelin, indeed, 

 holds the two to be identical. At all events, it is not possible 

 without a comparison of the types to express the differential 

 characters from the description alone. 



9. Tityus tricolor, Simon (Bull. Soc. Ent. Belg. xxvi. 

 p. lix, 1882), from the area lying between Zanzibar and the 

 lake region, almost certainly falls into section 2. From the 

 fact that Simon refers it to Tityus I am inclined to think the 

 dentition of the digits will be found to resemble that of occi- 

 dental's, Sim., to which, as well as to vittatus and Fischeri, 

 the species is evidently nearly allied. 



Supplement. 

 Whilst this paper has been in the printer's hands I have 

 received from Mr. G. A. K. Marshall a couple of species of 

 this genus from Durban. One of these proves to be U. plani- 

 manus of Karsch, identical in almost all respects with the 

 Mashunaland example mentioned above ; but the other appears 

 to be an undescribed form, which I propose to dedicate to its 

 discoverer and diagnose briefly in the following terms : — 



Uroplectes Marshalli, sp. n. 

 Closely related to U. triangulifer, Thor., in all essential 



