318 Mr. E,. I. Pocock on new Genera 



compares it, entirely forgetting apparently the possibility of 

 the existence of Lecomtei. As a matter of fact, the characters 

 that are given to distinguish 12-dentatus from 7-dentatus',[.e. 

 africannSy are precisely those which one would pick out as 

 distinguishing Lecomtei from africanus. So that it is only 

 reasonable to suppose that 12-dentatus is a synonym of 

 Lecovitei, and such I shall consider it to be until evidence to 

 the contrary is forthcoming. 



Oj>isthocentrus Lecomtei (Lucas). 



Ischnurus Lecomtei, Lucas in Thomson's Arch. Ent. ii. p. 428 (1858). 

 Ojnsthacanthus duodecim-dentatus, Karsch, Berl. ent. Zeits. xxx. p. 79 

 (1886). 



This species, which like africanus is a West-African form, 

 is unknown to me. Nevertheless there can, I think, be little 

 doubt that the synonymy given above is correct (cf . suj^rh sub 

 0. africanus). 



This species differs from the preceding, africanus, as well as 

 from the following validus, in having 10-12 pectinal teeth 

 and a smooth carapace ; possibly also in other characters 

 which will be pointed out when specimens fall into competent 

 hands for examination. 



Ojjistliocentrus validus (Thor.). 



Opisthacanthus validus, Thor. Act. Soc. Ital. p. 243 (1877). 

 Opisthacanthus capensis, id. ibid. 



Hormurus diremjytus, Karsch, Mitth. Munch, ent. Ver. 1879, p. 129. 

 Hormurus asiaticvs, Keyserling, Die Arachn. Austral., Scorpiones, p. 24, 

 pi. iii. tig. 1 (1885), 



This species is evidently not uncommon in South Africa. 

 Thorell's validus and Karsch's diremptus were from CafFraria, 

 and the former author's var. capensis from the Cape of Good 

 Hope. The British Museum has examples from S. Africa 

 [Drs. Smith and Quain), Port Elizabeth {Messrs. Leslie and 

 Drec/e), King Williamstown {Mr. Trevelyan) , East London 

 and JSatal {Mr. Howlett and Prof Lanhester), as well as two 

 others which are without history. One of these latter, a 

 young form, agrees exactly with Karsch's description of 

 H. diremjytus. As for Keyserling's LI. asiaticus, there can 

 be no doubt that it is the same species, though the vague 

 locality. East Indies, is in all probability erroneous. 



This species varies a good deal in the colouring of its 

 legs, the compression and denticular armature of its poison- 

 vesicle, &c., and it is possible that it may ultimately be 

 capable of being split up into several local forms. 



