836 MR. B. I. POCOOK ON SCORPIONS, PBDIPA.LPS, [Nov. 14, 



Genus Cbntrurus (Hempr. & Ehrenb.), Ptjt. 

 Centrubus margaritatus (Gerv.). 



Scorpio marcjaritatus, Grew. Voj de la Bonite, i. p. 281, pL i. 

 figs. 13-17 (1841). 



Centrums gnmbieiisis, Karsch, MT. Miinch. ent. Ver. iii. p, 123 

 (1879). 



Loc. Sierra Leone {Sarg.-Oapt. Clements) ; recorded by Karsch 

 from Gambia. 



Undoubtedly imported from America; perhaps from Jamaica, 

 where the species is common. 



Genus Patstdinus Thor. 



Pandinus imperator (C. Koch). 



Buthus imperator, C. Koch, Die Arachniden, ix. p. 2, fig. 695 

 (1842). 



Pandimis imperator, Kraep. Das Tierr., Scorpiones, p. 122 

 (1899). 



(= roeseli, Simon; africanus, Linn., Thor., Poc, Kraep.) 



Loc. Slave Coast (Alvan Millson) ; Gold Coast ( Col. Sir F. Festing) ; 

 Fanti {Gapt. Marryat) ; Ashanti ( W. H. Adams) ; 80 miles inland 

 of Axim {H. G. Fames) ; Onitsha on the Niger {Sir J. Marshall) ; 

 Asaba, 180 miles up the Niger {Dr. Crosse) ; Jebba and Ilo, on 

 the Upper Niger {Dr. Christy, Gapt. Righy, and Lieut. Ahadie) ; 

 Wegbe, Ho district, Togoland {W. G. Lines) ; Pernando Po 

 {M7^s. Burton and Cap)t. Bi^xh). 



Pandinus imperator (C. Koch), subsp. gambiensis nov. 



? Heterometrus imperator (C. Koch), Simon, Eev. Mag. Zool. 1872, 

 p. 55 ; Becker, Ann. Soc. ent. Belg. xxiv. pp. 137-140 (1880). 



Differing from the more southern form of P. imperator typicus in 

 having the carapace entirely covered with granules, the terga much 

 more closely and thickly granular, and the ornamentation of the 

 upper surface of the hand much more distinctly tubercular, the 

 tubercles remaining for the most part distinct and not running 

 together into a network of ridges. Pectinal teeth 16-18. 



Total length up to about 155 mm. 



Loc. Gambia {Sir A. Moloney, type); also several specimens 

 from Senegal {Heine). 



Pandinus dictator Poc. 



Scorpio dictator, Poc. Ann. Mag. Nat. Hist. (6) ii. p. 251 (1888) ; 

 Kraep. MT. Mus.Hamb. xi. p. 70(1894); id. Das Tierr., Scorpiones, 

 p. 123 (1899). 



Loc. W. Africa (no history) : Fernando Po {Gapt. Birch ; type) ; 

 mouth of the Loango Eiver {H. L. Duggan). 



