6 Hirst, Collection of Arachnida and Chilopoda. 



body and appendages and the fuscous markings being 

 deeper in tint. Fuscous markings of carapace resembling 

 those of U- xantkograuunns in distribution ; dorsal surface 

 of abdomen, however, much more extensively darkened, 

 for there is no pale central stripe, all the middle part of 

 the trunk being occupied by a very broad longitudinal 

 band of deep black, a minute median yellowish speck is 

 present, however, at the posterior end of tergites 4 — 6 ; 

 on each side of the trunk a longitudinal series of yellowish 

 patches is present. Fourth segment of tail (and also the 

 vesicle) a deeper brown than is the case in U. xantho- 

 gramnnis. and the fifth segment quite black. Palp similar 

 in colour to that of U. xanthogramiuus ; femora and tibiae 

 of legs marked with dark lines. 



The following details of structure may also be useful : — 

 Hand, movable finger about twice the length of the hand- 

 back, and with twelve rows of granules. Pcctinal teeth, 

 seventeen in number, the basal one shorter than the others. 



Measurements, in mm. Total length 3 2 '5 ; length 01 

 carapace 375, of tail (vesicle incl.) I9'5, of fourth caudal 

 segment 3*5, its width 275 ; length of fifth c. segment 

 375, its width 2-^5. 



[Length of fourth segment in a female example (type; 

 of U. xaniJiogyavimus 4, its width 26 ; length of the fifth 

 c. segment 425, its width 275]. 



LOC. Rhodesia (Bulawayo ?) ; a single adult female, 

 carrying its young ones, collected b\- Mr. E. C. Chubb. 



Remarks. — The young are much paler in colour than 

 the mother scori)ion, and their abdomen has a pale central 

 stripe as in U. xantliograuinms, etc. ; the fourth segment 

 of the tail is pale, like the anterior segments, only the last 

 segment and the vesicle beinfj fuscous. 



