142 On a new Genus of Aviculariidse. 



studded with cusps. Coxa of pedipalps with a very cuapulose 

 basal area. 



Sternum a little longer than wide, with conspicuous poste- 

 rior sigillse, separated from the margin by nearly the same 

 distance which divides them. 



Legs 4, 1, 2, 3 without spines; the tarsal scopula of legs 

 I., II., and III. entire, of IV. with a narrow longitudinal 

 band of spiniform bristles. There are no stridulating bristles. 



Palpal tarsus (in female) very bowed at the base ; beyond 

 much depressed, a little hollow, with dorsal series of small 

 spines. 



Male unknown. 



This genus is intermediate between the Ischnocolea? and 

 Aviculariege, Simon. From the Aviculariese it differs in the 

 position of the posterior sternal sigillse (marginal or sub- 

 marginal in all the Aviculariese) and in having the posterior 

 tarsal scopula divided by a longitudinal band of spiniform 

 bristles. It is distinguished from the Ischnocolese by the 

 unarmed legs. From Phlogiodes, Pocock (to which, by the 

 position of sternal sigillse, it is perhaps allied), it differs in 

 having the thoracic central fovea straight (strongly pro- 

 curved in Phlogiodes) and the anterior row of eyes strongly 

 procurved (only a little in Phlogiodes). From all the Avicu- 

 lariidse it differs by the anomalous form of palpal tarsus. 



Genotype : 



Ancyloehiros taunayi*, sp. n. 



$ . — 34 mm. 



Cephalothorax very dark red-brown mahogany, clothed 

 with dark pubescence. Cheliceres dark red-brown ; fang- 

 groove with eight black teeth on the inner margin and with 

 long pink hairs. Sternum and coxae of the legs black, densely 

 hairy; labium and coxce of pedipalps a little lighter. Legs 

 dark red-brown, with long rust-coloured hairs. Abdomen 

 black ; the dorsum with three pairs of large, oblique, rusty 

 spots. The whole abdomen with long, semierect, rust- 

 coloured hairs ; ventral area and spinnerets velvety black. 



Carapace a little longer than wide, as long as tibia-f- 

 patella I. or IV. and metatarsus + tarsus IV., longer than 

 metatarsus -f tarsus I. 



Anterior eyes equal, in a row and strongly procurved. 

 Posterior medians much smaller than anterior medians, sepa- 

 rated from the anterior medians and posterior laterals by 

 about a diameter. 



* I have much pleasure in naming this form in honour of Dr. A. de 

 Taunay, Savant Director of the Sao Paulo Museum, at Ypiranga. 



