114 On some South- American Aviculariidje. 



15 ; palp 26 ; first leg 59, second leg 55, third leg 49, fourth 

 leg 65; patella and tibia of first 21 ; tibia of palp 9. 



Loc. Ecuador : Paraniba ; Pambelar and Carondelet, both 

 at an altitude of 60 feet {Rosenberg). 



Metriopelina trinitatis,'sp. n. 



^ . — Colour. Integument deep blackish brown, clothed with 

 yellowish-brown hair. 



Cara2:)ace a little longer than patella and tibia of third leg, 

 distinctly longer than tibia of fourtli, atid slightly exceeding 

 patella, tibia, and tarsus of palp ; eyes of anterior line slightly 

 procurved, the posterior edge of the laterals beliind the 

 centres of the medians. 



Legs shorter than in M. velox ; patella of first with one 

 internal spine and one external apical, its tibia armed with 

 about 25 spines, placed mostly in the basal half Ijeneath 

 and on the inner side ; protarsus with one proximal spine 

 beneath. Tibia of second with about twelve spines, three of 

 which are on the inner side ; protarsus with three proximal 

 spines beneath ; femur of third slightly thickened. Tarsal 

 scopula of third and fourth divided. 



Palp with two spines on patella, about 23 internal spines 

 on tibia ; tibia with external distal anguliform prominence. 

 Palpal organ piriform, the spine short, pointed, with two 

 strong keels, its convex side forming an even curvature with 

 the curvature o£ the bulb. 



Measurements in millimetres. — Total length 18 ; length of 

 carapace 9, width 7*8 ; length of palpus 12-5, of first leg 31, 

 second 29, third 27, fourth 36'5 ; patella + tibia of first and 

 of fourtli and protarsus of fourth 11. 



Loc. Trinidad [Walter Lnce). 



M. auronifens, Keyserling (Brasilianische Spinnen, p. 16, 

 1891, sub Lrtchona) is represented by specimens in the 

 British Museum from Rio Grande do Sul. The species 

 described by Keyserling {loc. cit.) as Trechona pantherina 

 appears to me to be the female of auronitenSy in spite of a less 

 procurvature of the anterior line of eyes. 



j\L tetricum, Simon (Ann. Soc. Ent. Fr. 1889, p. 212), is 

 represented in the Museum by examples from Caraccas 

 {Dr. Lrnst), and by examples ticketed West Africa, which 

 served me as the types of the species upon which the genus 

 Miuachistopus was based. 



M. familiare, Simon {torn. cit. p. 211), from Caraccas is 

 distinguishable from M. tetricum and M. velox by possessing 

 onlv two or three internal apical spines on the tibia of the 



