186 SCORPIONS AND ALLIED ANNTLATRD SPIDERS OF THE ANGLO-EO YPTIAN SUDAN 



one at Mongalla, near the southern limit of tlie Sudan. I found it rather conuiion at 

 Gondokoro, under the decayed logs of the Southern Doni-Palm (Tlyphene coriarea). The 

 Swedish Expedition found it at Khartoum aiul Kaka (White Nile). It has been recorded 

 also from the Lado (Pai:e.n), Abyssinia and Eritrea. 



The coloration of this species shows a greater tendency to brown than is present in 

 any other Bnthu!: of the Sudan, but it is always more or less yellowish-browu, with blackish 

 keels. The largest specimen I have collected measures 67 mm. of total length ; it is a 

 female, and the largest male is distinctly smaller. The sexes are distinguished externally 

 by several characters, as shown by Birula. The movable finger is never twice as long as 

 hind hand. 



i. Genus: Paralnitlins, Pocock (Fig. 26) 

 Genus: Immovable linger of the mandible with two teeth at the lower margin; cephalothorax 



Parahithui without granular keels; abdomen with a single indistinct median dorsal keel. Oblique 

 granular rows of maxillary fingers with paired external and single internal lateral granules. 

 Basal median lamella of the combs broadly dilated in the female. 

 A single species is known from the Sudan. 



Parabuthiis hnnteri, Pocock 

 Pocock, Joiini. Liiiii. .S'»c., XXV. 1H9.'). p. 309 



Parabnthui Distinguished by having the posterior two caudal segments and the poison vesicle 



hiinUH deep greenish-black to greenish-brown, even in the young. Tail much more slender than 



in the allied P. liosoma, Hemprich and Ehrenberg, from Arabia, which has the end of 

 tail and the vesicle reddish-brown. 



Found at Dooroor and Suakin. Mr. S. Hirst regards this species as a mere sub-species 

 of the Arabian P. liosiuiia, and records a large male specimen from Omdunnan. Reaches 

 100 mm. in total length. 



3. Genus: X(iiiohi(tliiis,^ Pocock 



Genus: Innuovable maiulibular finger, toothless below; no granular keels on the cephalo- 



■^ """'"•""" thorax ; abdomen with median keel and feeble lateral keels. Oblique granular rows 

 of maxillary fingers missing in basal third ; five rows of oblique rows, every one of 

 which is continued at its base as a short transverse row of three conical teeth. 



Xaiiohiifhii.'' aiKhrfoiii, Pocock 

 Pooock, Juiini. Llmi. So,:, XXV. 1895, p. 314 

 .\'anoin,iiu,i Body (truncus) infumated above, posterior and lateral margins of dorsal segments 



'""'''■'""" ferruginous. Limbs and tail pale yellow, base and end of tail somewhat infumated. 



Small species, as already indicated by its generic name' ; measuring only up to 28 mm. 

 It has been found hitherto only at Dooroor, near Suakin, by the late Dr. John Anderson. 



Genus: Paiid/nits, Thorell [Srorpin, Pocock) (Figs. 24, B: 27) 

 The species of this genus are easily distinguislied from all Sudanese Bntliiihv, as already 

 [j)agc 182) explained, by the five-sided sternum (Fig. 27) and the very broad hands of the 

 maxillary palps; they are further distinguished from all other of the Srorpimiidn', to 

 which they belong, by the following characters : No prominence whatever under the sting of 

 the poison-vesicle; upper surface of hand round, without keel; lower surface of the first 

 four caudal segments with two median keels; three eyes on each side of the front 



■ Tliu dwarf lul/uci.—A.'B. 



