102 Mr. K. I. Pocock on 



Legs 4, 1, 2, 3, tlie fourth exceeding tlie first by about lialf 

 the length of its tarsus; protarsal scopulpe a little shorter on 

 all the legs; patella and tibia of first and fourth about equal. 



Measurements in miUimetres. — ^ . Total length 37 ; length 

 of carapace 17, width 14-5 ; length of first leg 62, second 



57, third 53, fourth C>c,-b ; patella and tibia of first 22, of 

 fourth 20; protarsus of fourth 17. 



? . Total length 30; carapace 15 ; first leg 41, second leg 



58, third leg 36, fourth leg 45. 



Loc. Uruguay ; without further history. 



Key to the foregoing species : — 



a. Stridnlating-bristles few in number, large and red 



distally spatididus, F. Cb. 



h. Stridula'ting-briptles numerous and close-set, those 



on the posterior side of the coxa of the palp 



■ forming a Lnrge quadrate area ou its diytal 



third. 



a^, Protarsus of first leg scopulate almost to base ; 



ocular luhercle veiy high moUiconws, Auss. 



h^, Scopula on first prctar?us not nearly extending 



to its base ; ocular tubercle normal. 



or. Protarsus of tirst leg (in male) strongly 



arcuate ; some short stout spines on the 



posterior side of the coxa of the palp 



beneath the stridulating-bristles Gossei, Poc. 



P. Protarsus of first leg (in male) less arcuate ; 

 no spines beneath the stridulating-bristles 

 on the coxa of the palp. 

 a^. Carapace as long as protarsus of fourlh 



leg alficeps, sp. n. 



b'. Carapace longer than protarsus of fourth 



leg. 



a*. Carapace longer than wide ; protarsal 



scopula of first leg covering less than 



half the louver side of the segment ; a 



thick cluster of stridulating-bristles 



• above the suture on the coxa of the 



first leg, , Jkerinffii, Keys. 



b^. Carapace as wide as long; protarsal 

 scopula of first leg covering more than 

 half the lower side of the segment ; 

 only a few bristles above the suture on 

 the coxa of the tirst leg adccon, sp. n. 



Genus Beaciiypelma, Sim., emend. 

 Brachypelma, Simon, Hist. Nat. Araign. i. p. 168 (1892). 



A scopula of plumose hairs upon the anterior side of the 

 trochanter of the first leg and on the inner side of its femur, 

 at least in the females; also upon the posterior side of the 



