20 F. P. SMITH ON THE SPIDERS OF THE SUB-FAMILY ERIGONINAE. 



species from the London district which will give some idea of 

 what the collector may expect to find. Throughout nature we 

 know that habit and structure are more or less interdependent, 

 and it is consequently only reasonable to suppose that there are 

 many points in the life-histories of these curious creatures which, 

 when patiently worked out, will furnish us with an almost end- 

 less series of pleasant surprises. Although there are many little 

 difficulties to be overcome in the study of the microscopic spiders, 

 both in the matter of identification and also in the observance 

 of habits, I think it is only fair to admit that there are few 

 subjects more replete with possibilities which could be placed at 

 the disposal of the student of microscopical nature. 



Explanation of Plate 1. 



Cephalo-thoraces of male Erigoninae, legs and palpi truncated. 



Entelecara acuminata (Wid.), profile. 

 Dicyphus comuttis (Bl.), profile. 

 Comicularia cuspidata (Bl.), profile. 

 Diplocephalas fuscipes (BL), profile. 

 Pocadicnemis pumilus (BL), profile. 

 Wideria antica (Wid.), profile. 

 Walckenaera acuminata (BL), profile. 



„ ,, (BL), viewed from the front. 



Magnifications approximately 45 diameters. 



Journ. Quekett Microscopical Club, Ser. 2, Vol. IX., No. 54, April 1904. 



