some South- American Aviculariidae. 93 



In addition to the type species, P. nigricohr, Auss., and 

 llie others described above this genus contains those named 

 by Ausserer Lasiodora fortis and ferox, of which only 

 female examples are known (Verh. z.-b. VVien, 1875, pp. 192- 

 194). 



Lasiodora Augusti and L. vespertinum, Simon, from Los 

 Puentes, near Quito, in Ecuador, no doubt also belong to the 

 genus Painphoheteus. The former, according to Simon, differs 

 from P. iiigricolor, Auss., in its smaller size^ in being tinted 

 with reddish violet, and in having a sinuous palpal spine. 

 P. vespertinus is covered with reddish pubescence, and further 

 differs from P. Augusti in having the spine of the palpal 

 organ thicker, lightly dilated and lanceolate, and furnished 

 with a higher and obtuse triangularly elevated median spine. 



Genus Xenesthis, Simon. 



Xenesthis monstrosus, sp, n. 



? . — Colour. Hairy clothing of body and limbs deep olive- 

 black and woolly ; a pair of purplish-red patches on the head, 

 but otherwise without red pubescence. 



Measurements in millimetres, — Total length 74 ; carapace 

 32; first leg 76, second leg 70, third leg 71, fourth leg 89 ; 

 patella and tibia of first 28, of fourth 29 ; protarsus of first 16, 

 of fourth 25. 



Loc. New Granada. 



This species is nearly allied to X.immams, Auss. {=^colom- 

 hiana^ Sim.), which the British Museum possesses from 

 Bogota in Colombia (Keyserling Coll. and L. Greening), and 

 Tachiro in Venezuela (J/?-. Higgins^. The females of the 

 tv.'O, however, may be contrasted as follows : — 



«. Legs mucli longer, the fourtli rather more than three 

 times as long as the carapace, the first about twice 

 and two thirds as long ; carapace equal to patella 

 and tibia of first or fourth leg, a little longer than 

 protarsus of fourth immanis, Auss. 



h. Legs much shorter, the fourth considerably less than 

 three times, the first less than twace and a half 

 as long as the carapace ; carapace distinctly ex- 

 ceeding patella and tibia of first or fourth, as long as 

 the fourth protarsus+more than half the tarsus . . monstrosus. Poo. 



The type of X. immanis, Auss. ( ? ), gives the following 

 measurements for comparison : — 



Total length 65 millira. ; carapace 29; first leg 80, second 



