On some Symphyla from Algeria, 527 



Avith silvery tips to the slaty hairs • . . /' apparently A'ery 

 like the other members of this group. 



Tail very short ; no account is given regarding the tail- 

 hairs. 



In his remarks on the skull, Jentink mentions '' a denti- 

 culation of the lower incisors^' — a feature very of ten present 

 in this genus, but more markedly so in Sylvisorex. 



Dimensions of the type (taken from spirit-specimen) : — 



Head and body 76 mm. ; tail 40 ; hind foot 15 (c. u.) ; 

 ear 7'5. 



Hub. Robertsport, Liberia. 



Type. Adult female in spirit. 



The short tail readily separates bilttihoferi from the rest 

 of the occidentalis gi'oup. The exact relation Avhich this 

 form bears to the other members of the group is not at all 

 clear. 



[To be continued.] 



XLYI. — On a small Collectiun of Symphyla from Algeria, 

 By Richard S. Bagnall, F.L.S. 



Some little time ago Mr. S. Hirst, of the British Museum, 

 submitted to me, along with other material, a collection of 

 Symphyla made by himself in Algiers, and containing speci- 

 mens of Sciitigerella armata, Hansen, which Mr. Hirst had 

 already identiHed. I am also able to record an example of 

 /S. immaculata taken by Mr. P. A. Buxton of Trinity College, 

 Cambridge. 



Genus Scutigerei.la, Ryder. 



This genus, as restricted in my memoir on the classifi= 

 cation of the order (Journ. Linn. Soc, Zool. xxxiii. 1913, 

 pp. 195-199), contains four species, which may be tabulated 

 as follows : — 



1. Setae on legs more numerous, smaller, and 

 less conspicuous ; a series on inner side of 

 metatarsus of hind leg present. Setae ou 

 cerci rarely more than 0'18 to 0'2 mm. aa 

 long as the depth of cercus 2. 



Setae on legs fewer, longer, and more con^ 

 spicuous ; the metatarsus of hind leg with 

 only one lougish seta on the inner side at 



