868 MB. R. I. POCOCK ON SCORPIONS, PBDIPALPS, [NoV. 14, 



Thalassius begalis, sp. n. (Plate LVII. fig. 22.) 



Colour. Carapace and abdomen with a pair of broad yellow bands 

 extending from clypeus to spinners, covered elsewhere with 

 yellowish rusty-red hairs ; legs strongly banded ; femora of legs 

 yellowish red, those of 2nd pair sHghtly, of 3rd and 4th pairs 

 distinctly banded with black ; apex of femora, whole of patellae, 

 basal seventh and apical third of tibiae, basal and apical fourth of 

 protarsi and tarsi black ; the i-est of the legs yellowish red. 



Carapace a little less than tibia of 1st leg, excelling its protarsus 

 by about one fourth the tarsus, distinctly shorter than both tibia 

 and protarsus of 4th. Lobes of vulva in contact along the posterior 

 half of the inner edge, separated in the anterior half by a median 

 heart-shaped sclerite, the depression in front of the lobes marked 

 with two posteriorly converging black ridges. 



Measurements in millimetres. — Total length 22 ; length of carapace 

 9, width 8 ; length of 1st leg 36, of 2nd 36, of 3rd 32, of 4th 38 ; 

 protarsus of 1st 8, of 4th 9-8. 



Loc. Benito Biver {G. L. Bates). An adult and an immature 

 female. 



Thalassius insigisis, sp. n. (Plate LVII. figs. 23, 23 a.) 



5 . Colour. Carapace brownish red, covered with brownish hairs 

 speckled with white, with a black edge, within the black edge a 

 white rim which broadens on each side of the head, the face 

 uniformly dark, sides of thoracic portion posteriorly blackish ; 

 mandibles black with yellowish hairs ; abdomen brownish above, 

 speckled with white hairs and with white spots at the sides ; lower 

 side of abdomen, sternum, aud coxae greyish yellow. Legs variegated 

 above ; femora yellow, indistinctly variegated ; patellae yellow, 

 blackish at the base ; tibiae yellow, black at base and apex ; protarsi 

 yellowish, also black at apex aud base ; tarsi yellowish ; the yellowish 

 areas of the legs covered with white hairs, the darker patches with 

 dark hairs. 



Carapace nearly circular, a little longer than wide, the width 

 equal to the length from the posterior border to the anterior pair 

 of eyes ; length slightly less than protarsus of 1st leg, about equal 

 to tibia of 3rd, width sHghtly shorter than tibia of 3rd ; carapace 

 low, higher in the cephalic region than posteriorly, not strongly 

 elevated behind; clypeus scarcely exceeding the ocular quadrangle; 

 ocular quadrangle longer than broad, slightly narrowed in front, 

 the posterior median eyes much larger than the anterior median. 



Legs 4, 2, 1, 3 ; the Ist, 2nd, aud 4th subequal ; patella and 

 tibia of 1st and 2nd about equal and a little longer than those of 

 4th; protarsus of 4th excee ding that of 1st by about one third the 

 length of the tarsus. 



Abdomen broadest in its posterior half, gradually narrowed in 

 front, abruptly narrowed behind. 



Measurements in millimetres.- — Total length 16 ; length of cara- 

 pace 7-7, width 7-2 ; length of 1st leg 34, of 2nd 34-5, of 3rd 31, 

 of 4th 35. 



Loc. Benito Eiver (G. L. Bates). 



