some SoutJi- American Avlculariid^e. 107 



Phry.xotrichiis parvulus, sp. n. 



Colour. Carapace black, clothed with long silky hairs ; 

 legs covered with greyish-yellow hairs ; coxaj and sternum 

 reddish brown ; lower side of abdomen black. 



Carapace longer than wide, its length less than that of 

 patella and tibia of first or of fourth leg, equal to those of 

 second. Ocular area much more compact than in P. auratus, 

 about twice as wide as long, medians about a diameter 

 apart, rather less from the laterals, which are larger and 

 half their diameter from the posterior laterals ; posterior 

 medians a little smaller than posterior laterals. 

 Labium bearing about 20 teeth. 



Legs 4:, 1, 2, 3 in length ; tibia and protarsi of third and 

 fourth and tibia of first and second armed with many strong- 

 spines ; femora also with a few spines ; protarsi of first and 

 second with an apical spine beneath, that of the second with 

 one spine at base as well ; protarsal scopulaj of first and second 

 covering distal half of segment, protarsal scopula of fourth 

 completely apical ; protarsus of first and, in a less degree, of 

 second arcuate ; tibial spurs of first leg strong, the lower 

 stout, directed obliquely forwards and downwards^ and armed 

 apically with two strong short spines one above the other, 

 the upper spur armed beneath with a strong spine running 

 along its lower side ; on the outer side of the tibia at the 

 apex above the base of the lower spur there are three long 

 spines set close together. 



Falp with tibia armed with a {ew spiniform setfe ; palpal 

 organ piriform, with a slender attenuate curved spine. 



Measurements in millimetres. — Total length 17; carapace 

 8-5 ; first leg 24, second leg 23, third leg 20, fourth leg 28. 

 Loc. Chili: Valparaiso [Colonel Hayes Sadler, type). 

 Except for the small number of labial teeth the two species 

 here referred to Fhryxotrichus have little in common. 

 The two may be compared in the male sex as follows : — 



a. Carapace nearly circular, up to 19 millim. long; fourth 



leg mucli shorter than first (60 : 70 millim.) ; with the 

 exception of numerous spines on the protarsus of the 

 fourth, and a spine or two at the apex of the tibia and 

 on protarsus of first, second, and third, the legs and palpi 

 are unarmed ; lower tibial spur directed vertically down- 

 wards and tipped with a long forwardly-directed spine, 

 upper spur unarmed auratus. 



b. Carapace longer than wide, 8'o niilUm. long ; fourth leg 



much longer than first (28 : 24 millim.) ; legs strongly 

 spined, with exception of protarsus of first and second 

 which have a few spines only ; lower tibial spur stout, 

 directed obliquely forwards and armed with two short 

 spines, the upper spur with one spine parvulus. 



