chamberlin: new spiders of the family aviculariidae. 51 



First leg in male with metatarsus moderately bowed in the frequent 

 way, the curvature being chiefly a little proximad of middle; nearly 

 equal in length to the tibia. Processes of tibia divergent; the superior 

 one straight, more than half the length of the inferior one; inferior 

 process curving throughout, with the concavity dorsad as usual. 



Male (type). Length 39 mm. 



Cephalothorax : length, 20.2 mm. ; width, 18.7 mm. 



Leg I 



Leg II 

 Leg III 

 Leg IV 



fern. 



18 mm. 

 17 

 16 

 17.6 



tib. +pat. 



24 mm. 

 22 

 20 

 23.1 



met. 



13.8 mm. 



15 



18 



23 



tar. 



8.2 mm. 



8.2 



8 



9 



total 

 64 mm. 

 62.2 

 62 



72.2 



Female. Length, 50 mm. 



Cephalothorax: length, 25.1 mm.; width, 23 mm. 



Resembling in various ways E. miriax Thorell, but differing in 

 having metatarsus IV essentially equal to tibia + patella IV in the 

 male; the more abundant spining of metatarsi I and II; and appar- 

 ently especially in the palpal organ. From E. doeringi Holm berg it 

 differs in having the cephalothorax in the male much shorter than the 

 tibia + patella IV instead of longer. It differs from E. tigrinum 

 (Pocock), E. salfator (Pocock), and E. vitiosum Keyserling (genus 

 Pterinopelma of Pocock) in lacking plumose hairs on trochanters of 

 palpus and leg I. 



# 



EURYPELMA ABERRANS, sp. nOV. 



Plate 4, fig. 2. 



Type.— U.C.Z. 52. 9. Chile: Casa Blanca. 



Integument of carapace, sternum, palpi, and legs chestnut; cheli- 

 cerae black or nearly so at base above, but chestnut distally and 

 ventrally. Coxae of palps brighter colored beneath as usual. Body 

 in type almost denuded of hair so that this cannot be properly de- 



