the Syshematics of Scorpions. SIS 



above, smooth externally, with ten or eleven inferior setal 

 pores ; upperside of hand flat, with inner finger-keel nearly 

 obsolete, the height of its outer side almost lialf its length ; 

 a row of fifteen or sixteen pores on its underside ; fingers 

 armed with a single median row of teeth and a single series 

 of spaced teeth on each side of it, short, the movable con- 

 siderably shorter than the carapace. 



Leffs with six protarsal spines on the first, five on the 

 second and third. 

 Pec final teeth 16. 



Measurements in millimetres. — Total length 46 ; length of 

 carapace 6-3, of tail 27, of first + second caudal segment 7o, 

 of the fifth 6-5 ; width of hand 4-6, height 3-2 ; length of 

 underhand 5 5, of movable finger 5-5. 



Loc. Queensland : Cape York Promontory. 

 Distinguishable from all the species known to me by the 

 simple dentition of digits of the chehe &c. 



Family Buthidse. 

 Genus Buthus, Leach. 

 Buthus maur it aniens, sp. n. 



Colour blackish brown all over, like B. bicolor and mieas, 

 with hand redder and tarsi pale ; a pale stripe on the first, 

 second, and third sterna. 



Allied to B. crassicauda, Olivier, from Persia and Asiatic 

 Turkey, but with the carapace and terga more coarsely 

 granular and with more coarsely granular keels ; the keels 

 on the last abdominal sternum and lower side of first caudal 

 segment smoother. 



Tail keeled and with its intercarinal spaces smooth, as in 

 B. crassicauda, but relatively thicker ; third and fourth 

 segments the widest of the series, the fourth as wide as long, 

 inferior lateral keel of fifth with one large lobate tooth in 

 front of the trilobate terminal lobe, from which it is sepa- 

 rated by a space containing from one to three smaller teeth. 

 In B. crassicauda there are about three subequal large teeth 

 and often no distinct interval between them and the terminal 

 lobe. 



Chelae with the hand incrassate in both sexes, that of the 

 male large, much wider than the brachium, the movable digit 

 only lightly sinuate, the immovable with a deep basal notch 

 and large lobate prominence. 



Pectinal teeth about 28 in both sexes. 



Measurements in millimetres. — ^ . Total length 69 ; length 

 Awi. & Mag. N, Hist. Ser. 7. Vol. x. 28 



