32 BUTHID.E. 



Sternum small, pentagonal, wider than long, about equal in length 

 to the genital operculum. Pectines normal. Mandible with 

 movable and immovable finger armed below with two teeth. 

 Finger of chela furnished along the middle line with numerous not 

 overlapping rows of teeth ; the internal series formed of single 

 larger teeth lying close to the apices of the median rows ; external 

 series of small paired teeth. Tail weakly keeled, 4th and 5th 

 segments punctured below ; no spine beneath aculeus on vesicle. 



Type, C. laneus, Karsch. 



Distribution. Ceylon. One species only known up to the present 

 time. 



Presumably on the strength of its pentagonal sternum — a feature 

 which isolates the genus from the rest of the Buthidse — Karsch 

 referred Charmus to the subfamily Iurini (= Vejovidce), placing it 

 alongside Scorpiops and Ohcerilus. The rest of its organization, 

 however, points unmistakably to its belonging to the Buthidse. 



17. Charmus laneus, Karsch, MT. Munch, cnt. Ver. iii, p. 104, 1879; 

 Kraepelin, Tierr., Seorp. etc. p. 39, 1899 : cinctipes, Pocock, A. M. 

 N. H. (6) ix, p. 47, pi. iiiB, figs. 2, 2 a, 2 b, 1892 (Heterocharmus). 



Colour : upper side of trunk blackish, variegated with yellow 

 markings ; tail blackish ; vesicle ferruginous ; chelae yellowish, 

 brachium marked with a black band, hand blackish ; legs blackish, 

 yellowish at the junction of the segments. Carapace, nearly as 

 long as the 1st and 2nd caudal segments, weakly but closely 

 granular throughout. Terga more coarsely granular than the 

 carapace. Sterna smooth and shining, the last beset posteriorly 

 with coarse granules. Tail with segments 1-3 coarsely and 

 thickly granular below and at the sides, upper surface much more 

 feebly granular, 3rd segment without keels, its margins rounded ; 

 4th and 5th segments without keels, 4th finely granular only in the 

 excavation of the upper side ; 5th granular on the posterior portion 

 of its lower and upper surface; anal border granular beneath, 

 lobate at the sides ; vesicle coarsely punctured ; tail and vesicle 

 thickly hairy beneath. Chela*- weakly granular and carinate ; 

 hand rounded, narrower than brachium, smooth, not crested ; fingers 

 long, the movable nearly twice as long as the underhand. Lei/s 

 with weakly granular femora ; coxa? smooth. Pectines with 14-17 

 teeth. 



Measurements in mm. — Total leugth 30, carapace 2"5, tail 1T5, 

 5th segment 3, underhand 1-2, movable finger 2-5. 



Loc. Ceylon. 



Genus STENOCHIRUS, Karsch. 



Stenochirus, Karsch, Berlin, ent. '/.cits. \\x\ i, p. 300, 1891 ; Kraepelin, 

 Tierr., Scarp, etc. p. 39, 1899. 



Two teeth on lower side of immovable finger of mandible. 

 Carapace with frontal area horizontal, almost smooth, not keeled, 



