from the Lower Amazons &c. 11 



margins. Patella and tibia i. longer 

 than patella and tibia iv. Size larger, 

 27 mm. Vulva with a pair of oval, con- 

 vex, obliquely convergent tubercles on 



anterior portion C. medius, Keys. 



b. Second row of eyes procurved (straight 

 line touching anterior margins of centrals 

 passing through or above centres of late- 

 rals). Patella and tibia i. equal to patella 

 and tibia iv. Size smaller, 20 — 12 mm. 



1. Carapace equal in length to patella and 



tibia iii. (Vulva without oval tu- 

 bercles in front, with pair of widely 

 separate oval-elongate furrows on each 

 side in front.) C. sinuatipes, sp. n. 



2. Carapace longer tban patella and tibia iii. 



* Size larger, 20'o mm. Patella and 



tibia i. slightly longer than patella 

 and tibia iv. (13'7 — 12'3 mm.) .... C griseus, Keys. 

 ** Size smaller, 12"3 mm. Patella and 

 tibia i. equal to patella and tibia iv. 



(6'7 — 6'8 mm.) C. minusculus, Keys, 



B. Ocular quadrangle as broad as long or 

 broader than long, distinctly narrower in 

 front. Anterior eyes of quadrangle dis- 

 tinctly smaller. 



a. Patella and tibia i. longer than patella and 



tibia iv. (9"9 — 7'o mm.). 



* Size smaller, 15'3 mm. Legs i. 



scarcely shorter than legs iv. (26 — 



26'5 mm.) C. variegatus, Bertk. 



** Size larger, 17 mm. Legs i. dis- 

 tinctly shorter than legs iv. (25 — 

 27'8 mm.) C. obscunis, Keys. 



b. Patella and tibia i. equal to (or almost) 



patella and tibia iv. (p. t. i. 8'7 — p. t. iv. 

 8*2, vehemens ; p. t. i. o"l — p. t. iv. 5'4, 

 breiipes), slightly longer, slightly 

 shorter, the rest equal. 



1 . Second row of eyes procurved, straight 



line touching anterior margins of cen- 

 trals passing through centre of laterals. C. similis, sp. n. 



2. Second row of eyes straight by anterior 



margins. 



* Clypeus narrower, equal to one dia- 



meter of anterior central eyes. 

 aa. Size larger, lo-6 — 17 mm. 



Separable by form of vulva .... C. ornutus, Keys. 



6'. veJiemens, Keys. 

 66. Size smaller, 11—11-4 mm. 



Separable by form of vulva .... C. brecipes, Keys. 



C. adustus, Keys. 

 C. minor, sp. n. 

 ** Clypeus broader, equal to two dia- 

 meters of anterior central eyes .... C. alhofasciatus, sp. n. 



