204 Mr. R. I. Pocock on 



Family Dinopidse. 

 Genus Dinopis, Macleay. 

 Dinopis cylindricus, sp. n. 



J. — Colour. Carapace and abdomen with a dark olive- 

 green clothing of hair ; abdomen with a broad silver-white 

 band on each side ; carapace also with silver-white marginal 

 band on its thoracic portion and a V-shaped silver mark on 

 the head ; face silvery white ; mandibles with two silver 

 bands ; legs and palpi brown, clothed with greyish- white 

 Lairs ; labium and maxillge with silvery hairs ; sternum dark 

 at the sides, with broad, posteriorly pointed, median silver 

 stripe; lower side of abdomen variegated with silver and 

 brown, 



Carajmce flat, narrowed behind_, very broad at the base of 

 the anterior legs, the width at this spot about two thirds the 

 length of the carapace ; cephalic area narrower in front than 

 behind, produced into a horn covered with white hairs and 

 projecting over tlie upper rim of the posterior median eyes, 

 these eyes not very large, separated by a space which equals 

 their radius, and not occupying the entire width or height of 

 the face ; anterior median eyes about a diameter apart. 



Palpi slender ; femur sinuate ; tarsus globular, consider- 

 ably shorter than tibia. 



Legs long and slender (c/. measurements). 



Abdomen long, slender, parallel-sided, flat above and below, 

 about Ave times as long as wide, its apex projecting and bifid. 



Measurements in millimetres. — Total length 19 ; length of 

 carapace 5, width 3-5; length of abdomen 13, width 2*5; 

 length of palp 8, of first leg 66, of second 50, of third 39, of 

 fourth 40 ; length of anterior femur 18'5, posterior femur 13"5. 



Log. Durban (B. A. Spencer). 



Apparently resembling D. cornigera, Gerstaecker (Von der 

 Decken's ' Reisen ' &c. iii. 2, p. 478, pi. xviii. fig. 5), from 

 Aruscha, in East Africa, in the form of the carapace, but 

 differing at least in its much longer legs and palpi. In 

 cornigera the femur of the first leg is barely twice as long as 

 the carapace (9^ : 5) ; the palpus is much shorter than the 

 carapace, with its tarsus longer than its tibia. 



It more nearly resembles D. bubo, Brito Capello (Mem. 

 Ac. Sci. Lisboa, (3) iv. pt. 1, p. 16, 1867, pi. ii. fig. 3), from 

 the Quilo River, W. Africa, but may be at once recognized 

 by tlie length and narrowness of the abdomen, this region in 

 J), bubo being less than three times as long as wide. 



