498 MR. 11. I. POCOCK ON' THE AUACUMDS COLLECTEU [June21, 



The Arachnida, which came into my hands for determination and 

 form the siibject-ujatter of the present communication, proved upon 

 examination to be of very considerable interest ; for not only was 

 there a large percentage of new forms ajuon<ist them, but the 

 series contained as well examples of several species, whicli, though 

 already described by continental authors, were not at the time 

 represented in the National Collection. 



Of the Scorpions none were new to science ; but of the species 

 known as Pseudobuthus dentatas there were no specimens in the 

 Museum at the time ; and of the little Hat black species named 

 JomacTius politus, of which a large series of adults and young of both 

 sexes were obtained, we only possessed a solitary example (the type), 

 sent some years previously from Mombasa by Mr. Wilson. The 

 rest of the Scorpions, though not in any way novelties, form 

 valuable additions to our series. 



So far as " species novce " are concerned, the Solpugas (Solifugae) 

 contrast very forcibly with the Scorpions, since out of the six species 

 sent home, one only appears to have been already named. The 

 rest are representatives of well-known African genera. 



Of the Spiders nearly all the Theraphosidae appear to be repre- 

 sentatives of new species, the most interesting being the specimen of 

 the new genus EucratosceJus and the series of examples including 

 the previously unkno\\n male of Piseiwr liohneli. Most of the 

 Argiopidse are well-known foi'ms of wide distribution in tropical 

 Africa ; but specimens of the protectively coloured and fantastically 

 shaped genera FuUi/s and Ccerostris seem to be referable to species 

 wl.ich have hitherto escaped the vigilance of collectors in that part 

 of the world. The capture of a male of the species of Ccerostris is 

 a feat upon which Mr. Betton is to be especially congratulated. 



Order SCOEPIONES (Scorpions). 

 Family Scokpionid^. 

 Genus Scorpio Linn. 

 ? Scorpio bellicosus L. Koch. 



'? Scorpio bellicosus, L. Koch, Aegyptische und Abyssinische 

 Arachniden, p. 1, pi. i. fig. 1 (1875). 



Loc. Ndi (Weiss Eoad Camp). 



A single female example collected by Mr. Betton resembles the 

 females obtained in Somaliland by Dr. Donaldson Smith, which I 

 have identified as Scorpio bellicosus of L. Koch. The accuracy of 

 the determination, however, must remain a matter of doubt until 

 the male is procured or until the genuine female of bellicosus comes 

 to hand for comparison. 



Scorpio gregorii Pocock. 



Scorjno (jreyorii, Pocock, Ann. Mag. Kat. Hist. (6) xvii. p. 432, 

 pi. xviii. fig. 2. 



Loc. Ndi (Weiss Koad Camp), 



