798 R. I. POcocK. 



Order Scorpionew. 



Family Buthidae. 



Genus Isometrus, Hempr. and Ehrenb. 



1. Isometrus europaeus, Linn. 



Scoi'pio europaeus, Linn. Syst. Nat. ed. 10, p. 625, 1758 (= maculatus De Geer and most 

 recent authors). 



Locality. Minikoi ; Fainu, N. Mahlosmadulu ; Hulule, Male ; and Havaru Tinadu, Suvadiva. 

 Introduced by human agency from the Oriental Region all over the tropical and subtropical 

 parts of Asia, Africa, and America. 



Order PsEUDOSCORPiONES. 

 Family Cheliferidae. 



Genus Garypus. 



2. Garypus maldivensis sp. n. (PI. LXVI. fig. 1 a — e). 



Colour a tolerably uniform testaceous yellow ; the carapace from the anterior border as 

 far back as the anterior of the two transverse depressions reddish-brown, the posterior 

 portion marked like the first tergal plate, with a broad median greyish-black stripe, and 

 a patch of the same colour on each side ; the succeeding tergal plates marked with four 

 spots, one, frequently broken up, on each side of the middle line and one near the lateral 

 angle : ventral surface uniformly pale except for the presence of a spot on the side of the 

 five posterior sterna ; chelicerae brownish ; chelae with hands and fingers deep reddish-brown, 

 the latter sometimes bluish at base, the remaining segments pale ; legs uniformly pale. 



I7itegument of dorsal and ventral sides covered with fine coriaceous sculpturing which 

 under a i inch objective is resolved into a pattern of minute polygonal areas; the fingers of 

 the chelae finely but decidedly granular, and sharply marked off from the hands in that 

 particular; hairs short, simple, delicate and sparsely distributed, longer and coarser on the 

 extremities of the legs than elsewhere. 



Carapace much longer than wide, its posterior width scarcely greater than the length 

 from the posterior border to the anterior edges of the anterior eye; ante-ocular portion 

 naiTowed and depressed, with rounded frontal lobes and a deep but wide median depression; 

 post-ocular area marked with two transverse depressions, the anterior of the two mesially 

 obsolete, distinct laterally; the posterior, defining the posterior fifth of the carapace, distinct 

 and of almost uniform depth from side to side. 



Chelae long: trochanter with a broad stalk, evenly rounded in front; femur slender, not 

 stalked, gradually incrassate ; tibia shorter than femur by nearly one-fourth the length of 

 the latter, also slender and incrassate, the posterior border lightly convex, the anterior nearly 

 straight; hand with a definite, short, cylindrical stalk, the expanded portion oval, the inner 

 border more strongly convex than the outer, a little shorter than the tibia; fingers long 

 and curved, the movable digit surpassing the length of the underhand by nearly one-third 

 of its own length. 



