32 bulletin: museum of comparative zoology. 



surface in mostly two series on tibia, patella, and tarsus. Femur 

 bearing stout bristles but with no true spines. Tarsal claws with 

 two very small teeth proximally. 



Leg I with paired claws each bearing a single long tooth at base; 

 tarsus and metatarsus with the usual band of stout spines on each side; 

 tibia with a similar band of short and some longer spines on the caudal 

 side, while on the anterior side there are only two short spines at the 

 distal end; patella unarmed. Leg II with claws and tarsus and 

 metatarsus similarly armed to those of leg I, with addition of some 

 longer ventral spines; tibia with a dense area of short, acute appressed 

 spinules or teeth on the posterior side, these being much more nu- 

 merous and densely arranged than on tibia I ; patella unarmed. Leg 

 III with claws, tarsus, and metatarsus as in I and II, the metatarsus 

 with spines dense on caudal side but absent on the anterior excepting 

 for a single long terminal one; tibia with many stout short spines on 

 dorsal surface on the distal half; patella with fewer spines or teeth at 

 distal end, these chiefly in two transverse rows. Leg IV having tarsus 

 with few longer spines chiefly on the anterior side; metatarsus with 

 four pairs or ventral spines; tibia unarmed; patella with numerous 

 stout, short spines or teeth in a broad band dorsally along the anterior 

 side; the tooth at base of claw in leg IV and III much reduced. 



Female (type). Length 16 mm. 



Cephalothorax: length, 7.3 mm.; width, 7.3 mm. 



fem. tib+pat. met. tar. total 



Leg I 4.2 mm. 5 mm. 2.8 mm. 1.6 mm. 13.6 mm. 



Leg II 4.2 5 2.8 1.6 13.6 



Leg III 4 4.5 3.1 1.5 13.1 



Leg IV 5.1 7 3.5 1.6 17.2 



This species seems to be close to A. crassipes Keys, but it differs 

 importantly from that species according to the description, e. g. in 

 the proportions of the cephalothorax and conspicuously in the relative 

 sizes and distances of the eyes. It is like the preceding species and 

 A. caraiba in having the anterior row of eyes longer than the posterior. 



