THE SPIDERS OF EPPING FOREST. 211 



•distinct variety, cespiticolis, Walck, regarded by some authors as a 

 separate species, which is found commonly in Britain, but I have 

 never seen it in the Forest. 



Philodromus dispar, Walck. A few specimens from near 

 Theydon Bois. 



Philodromus margaritatus, Clk. A single specimen from 

 Chingford. 



The following British species of Philodvomus have not, up to 



the present, been taken in Epping Forest : — P. fallax, Sund. ; 



P. elegans, Bl. ; P. emavginatus, Schr, ; P. comtellatus, Sim ; P. 



clavkii, Bl. ; P. variatus, Bl. ; P. mistus, Bl. ; P. praedatus, Cb ; 



P. lineatipes, Cb. 



Fami7v THOMISIDAE. 

 [Thomisidae, Cambr. List ad J>a/iemTh.o\m<,ma.e.] 

 Cephalo-thorax short and very broad, strongly constricted at the caput, which 

 is truncated in front. Eyes homogeneous, of the diurnal type, arranged usually 

 in two rows which after enclose a crescent-shaped figure. Clypeiis high, more or 

 less vertical. Falces small, often very weak. Legs very unequal in length, those 

 of the first and second pairs being much the largest and strongest. Tarsal claivs 

 two, but almost always without either claw-tuft or scopula. Abdomen short, 

 broadest towards its hinder part, marked upon its upper surface with five 

 impressed spots which form a triangle with its apex in front. Spinners short and 

 compact. 



This family includes all the typical crab-spiders. It is by no 

 means extensively represented in Epping Forest as far as our 

 present knowledge goes. 



TABLE OF THOMISIDAE. 

 I. Curve of posterior row of eyes less strong than that of the 

 the anterior row. Lateral eyes upon a common pro- 

 tuberance . . . . . . . . 2 



Curve of posterior row of eyes equal to, or stronger than 

 that of the anterior row. Lateral eyes upon separate 

 protuberances , . . . . . . . 4 



.2. Quadrangle formed by the central eyes longer than wide Pistius 

 Quadrangle formed by the central eyes not longer than 



wide, usually wider than long . . . . 3 



3. Clypeus inclined, as high as ocular area, vertical. Front of 



caput angularly produced . . . . . . Phoiuisus 



Clypeus lower than ocular area, vertical. Front of caput 



obtuse, not produced . . . . . . Misumeuci 



4. Quadrangle formed by the central eyes longer than wide . . 5 

 Quadrangle formed by the central eyes not longer than 



wide, often wider than long . . . . . . XysticilS 



•5. Posterior row of eyes very strongly curved, the centrals 



