1898.] BT mh. c. s. bettox in buitish east aehica. 499 



This species will iu all probability prove to be identical with the 

 form previously described by Dr. Kraepelin as So. paLUdus, from 

 Sumatra. The locality " Sumatra " is almost certaiuly erroneous. 



Dr. Gregory obtained the species at Tzavo, Kinam, &e. 



Genus Iomachus Poc. 



lOMACHUS POLITUS Pocock. 



Iomachus poliiun, Pocock, Ann. Mag. Nat. Hist. (6) xvii. p. 317 

 (1896) ; Kraepelin, Jahrb. Hamb. Wissen. Anstaiten, xiii. p. 138, 

 tigs. 19-22. 



Loc. Maziwa Mitatu, Machuma, Mbuyuni, Voi, and Samburu. 



Though this little flat Scorpion is evidently abundant near 

 Uganda, the species was hitherto repi'esented ia the British 

 Museum by a single youiig specimen, the type, obtained by 

 Mr. Wilson at Mombasa. Prof. Kraepelui has recorded tbe species 

 from Dar as Salam and Bagamoyo. 



Family Bu'xaii) m. 

 Genus Buthus Leach. 



BUTHUS BMINII Pocock. 



Buthus eminii, Pocock, Ann. Mag. Nat. Hist., July 1890, p. 98, 

 pi. i. fig. 2. 



Loc. Voi. 



Also obtained by Dr. Gregory at Ndara and Athi and by Emin 

 Pasha on the shores of Lake Victoria Nyanza. 



Genus Pakabuthus Poc. 

 Paeabuthus pallidus Pocock. 



Parabuthus pallidus, Pocock, Journ. Linn. Soc, Zool. xxv. p. 312. 

 Loc. Machuma in the Taru desert. 



Previously recorded from Mombasa {D. J. Wilson), and Giriama 

 near Fuladoya {J. W. Gregory). 



Genus Pseudobuthus Poc. 



PSEUDOBUTHUS DENTATUS ( Karsch). 



Odonturus dentatus, Karsch, Sitzb. nat. Pr. Berlin, 1879, p. 119. 



Mhojyirurus dentatus, id. Berl. ent. Zeit. xxx. p. 77 (1886). 



Fseudobuthus dentatus, Ki'aepelin, Jahrb. Hamb. Anst. xiii. p. 121 

 (1896). 



Males, females, and young of this species, which is new to the 

 British Museum collection, were taken at Samburu, Machuma, 

 Mbuyuni, and Voi. The adults, measuring about 70 min. in length, 

 are mostly of an earthy-red colour with an indistinct median dorsal 

 line ; but a young example (40 mm.), which has the aspect of a 

 distinct species, is yellower, with the dorsal surface trilineate ; the 

 humerus, brachium, and manus of the chelae, as well as the femora 



