some South- American AviculaiilJa3. 105 



pace 16; first leg 47, second leg 43, third leg 40, fourth 

 leg 46. 



(J (type). Total length 35; carapace 19; first leg 67, 

 second leg 58, third leg 53, fourth leg Gl. 



Loc. Chili: Santiago (G. A. J. Rothnet/, type, c? ) ; Val- 

 divia ( ? ). 



According to Simon (Hist. Nat. Araign. i. p. 169), Phryxo- 

 trichus is represented by a single species, P. roseus, Walck., 

 of which riibigi'nosus, Nic, and vulpinus, Karsch, are 

 synonyms; he adds, moreover^, that the species is very 

 common in Chili. Judging hy the Chilian material pre- 

 served in the British ]\Iuseum, the commonest species of 

 Aviculariidffi in that country is the form to which I have 

 given the name Citharoscelas Kochii, on the supposition that 

 it may be the same as the species identified by C. Koch as 

 Mijgale 7-osea, Walck. Now Citharoscelus Kochii, although 

 abundant in Chili and of a beautiful pinky-red hue with silky 

 lustre, well deserving the epithet rosea, does not present the 

 characters of the genus Phn/xotrichus, and therefore cannot 

 be the roseus of Walckenaer, if we are to accept Simon's 

 determination of the latter species. Unfortunately, Simon 

 docs not give reasons to support his determination of rosea, 

 Walck. The diagnosis of rosea is plainly inadequate ; never- 

 theless it states that the abdomen and carapace are covered 

 with hairs of a delicate red with rosy lustre — a statement 

 applicable in all particulars to the male of Citharoscelus 

 Kochii. Walckenaer speaks, moreover, of the similarity in 

 colour between the carapace and abdomen as distinctive of 

 rosea as compared with his versicolor. 



Now, since the specimens here described as P. auratus 

 are in no sense of the word " rosy red " and have the cara- 

 pace and abdomen dissimilarly coloured, I find it impossible 

 to refer them to roseus of Walckenaer, although it is highly 

 possible, perhaps probable, that they may prove to be speci- 

 fically identical with the specimens identified by Simon as 

 roseus — the specimens, in fact, from which the characters of 

 Phryxotrichus w^re taken. Two considerations, however, 

 militate against this view — namely, that in the female of 

 F. auratus the_ fourth leg is shorter than the first, the tarsi 

 of the two being equal, whereas in Simon's F. roseus the 

 fourth leg is longer than the first, but has a shorter tarsus. 



In many respects the very inadequate description of Ortho- 

 tn'chus vulpinus, Karsch, based on a spider from Valparaiso 

 (Zeits. ges. Nat. liii. p. 390, 1880), applies to the example 

 of P. auratus-^ but the phrase " tibia iii. deutlich bestachelt " 

 forbids the identification of the two, although I confess to a 



