78 Mr. F. O. P. Cambridge on Cteniform Spiders 



Ctenus Reidiji *, sp. n., 2 . 



Hah. Forest, Santarem. 



Type in coll. Brit. Mus. Nat. Hist. London, 1896. 



2 . Length, including mandibles, 40 mm. 



Colour. — Carapace orange-niahoganj, clothed with short 

 golden-brown hairs. Abdomen dull yellow-brown, clothed 

 with golden-brown hairs. Mandibles stout, black, densely 

 clothed with bright- orange hairs in front. Coxce of pedipalp 

 and sternum dark brown, the latter clothed with golden-brown 

 hairs. 



Legs. Coxa, trochanter, femur, and tibia orange-brown; 

 protarsus and tarsus dark brown, entirely clothed with golden- 

 brown pubescence. 



Pedipalp. Femur and patella orange-brown; tibia and 

 tarsus clothed with a broad band of black pubescence on inner 

 side, a thin line of grey pubescence, and another broader 

 band, black, followed on the outer side with a broad band of 

 grey pubescence, aj}pearing on the upperside as two narrow 

 grey lines. 



Structure. — Carapace 16 mm. long, 13*5 broad ; abruptly 

 inclined behind, sh'ghtly raised towards caput. Central 

 groove distinct, segmental stria just discernible. 



Eyes. Laterals situated on a strong tubercle ; diameter of 

 anteriors half that of posteriors, situate one diameter from 

 them. Second row straight by anterior margins ; the four 

 centrals situated in a quadrangle, slightly longer than broad; 

 posterior centrals very slightly larger. 



Mandibles with a shiny tubercle at base on outer side. 

 Fang-groove with 5 teeth on outer margin, 3 on inner 

 margin. 



Legs (1.4) 2.3. Every segment except the first and 

 last spinose. Tibije i. and ii. witli a double series of 5, of iii. 

 and iv. of 3, stout spines beneath. 



Frotarsi \. and ii. with a double series of 3 spines, of iv. 

 with an irregular series beneath. 



Tarsi, protarsi i. and ii., and apex of tibia slightly, tarsi 

 and protarsus iii. and tarsi and apex of protarsus iv. clothed with 

 thick scopula. Femora, tibia, and protarsi iii. and iv. clothed 

 beneath with golden-yellow hairs, i. and ii. with pubescence 

 only. 



Tarsal claws 2, with claw-tuft on each side ; armed on 



* In honour of niv friend Mr. \l. Keidy, wliose intimate acquaintance 

 witli Ikazilian maniieis and customs and compli-te mastery of the lan- 

 guage smoothed the way for us on many occadious during our expedition. 



