Mr. E. I. Pocock on a new Trap-door Spider, 49 



EXPLANATION OF PLATE IIL B. 



Fiff. 1. Cheloctonm Joncsii, ^. et sp. n. Nat. size. 

 Fig. 2. Jleterocharmus cinctijy.s, g. ct sp. n. X 2. 

 Fig. 2 a. The same. Sternum and genital operculum. 

 Fiff. 2 b. The same. Dentition of dactylus of palp. 



VI. — Description of a new Trap-door Spider from Ceylon. 

 By R. I. Pocock, of the British (Natural History) Museum. 



[Plate III. A.] 



(Ecophloius cinctipes, gen. et sp. n. (PI. III. A.) 



Colour. — Cephalothorax castaneous, variegated with black ; 

 ocular area black ; mandibles castaneous ; sternum, labium, 

 coxie, and femora clear ochraceous, the patella, tibia, and 

 proximal tarsal segment with a fuscous band round the distal 

 extremity ; abdomen fuscous, variegated above and below 

 with testaceous bands and spots. 



Cephalothorax longer than wide, its lateral margins convex, 

 anterior margin straight, truncate, its posterior margin lightly 

 concave. The fovea transverse or perhaps very lightly concave 

 backwards. The area of the upper surface behind the fovea 

 sloped at an angle of 45 degrees, the area in front of it very 

 lightly convex longitudinally. No ocular tubercle ; the area 

 of the eyes much wider than long and following the convexity 

 of the cephalic portion ; the median and the anterior lateral 

 eyes forming a strongly procurved series, the median and 

 posterior lateral forming a recurved series ; the median eyes 

 the largest and the highest, a horizontal line drawn from the 

 base of each would touch but not cut the anterior lateral ; the 

 anterior laterals separated by a space which is about equal to 

 twice the diameter of a median eye, the distance between the 

 anterior and posterior lateral about equal to a diameter of a 

 median eye, and that between the median eyes is a little less 

 than a diameter of each ; the fourth pair of eyes are small, 

 closely in contact with and on the same level as the posterior 

 lateral, and are separated from the median of each side by a 

 space about equal to their own diameter. 



Mandihhs of moderate size, the anterior surface evenly 

 curved from the base to the fang, smooth above, hairy in 

 front, but not armed with teeth, fringed below with long 

 reddish hairs, and armed internally with a row of denticles. 



Ann. & Mag. N. Hist. Ser. 6. Vol. ix. 4 



