1896.] SPtDBna rEOM the lower amazons. 749 



two pairs, while those of the fourth pair are even less so than 

 tlie third. I should expect to find, too, that no species with 

 characters agreeing with those of Santaremia would be found with 

 an arboreal mode of life. The habit of burrowing in the earth has 

 undoubtedly been a factor in the differentiation of various genera 

 and of this genus also, though one must not speak too confidently 

 in the absence of data. The feathery legs and broad spatuliform 

 terminal joints on all four pairs of legs in Avicularia and Tapin- 

 auchenius are obviously the outcome of an arboreal habit '. 



Genus Haepalothble, Lenz. 



Under the generic name IlarpnlotJiele, M. Simon, in Hist. Nat. 

 Ar. 1892, pp. 180, 181, distinguishes three groups corresponding 

 to three different geographical areas. The first are those from 

 Oceania, which will fall under the genus Ixamadus, Sim., with 

 /. varia, L. K., as the type. The second are the African species, 

 which fall under the genus llarpalothele, Lenz., with //. reuteri, 

 Lenz, as the type. The third are the more numerous species from 

 the Neotropical regions, which fall under the genus Fujtus, Sim., 

 with F. atramentarius as the type. 



The last generic name I have retained in this paper for 

 convenience' sake, and have added a brief reference to the other 

 species of the group which have been already described from 

 South America. 



Genus Haepalothelb, Lenz. 



Type. II. reuteri, Lenz, Zool. Jahrbiicher, i. p. 397 (1886). 

 Hab. Madagascar. 



Genus Lcalus, L. Koch. 



Type. /. varius, L. K. (J ?; d 14 mm., 5 15 mm.), Ar. 

 Austral. 1873, p. 469. Hai. Oceania. 



The name Ixalus, however, being preoccupied, Simon has 

 renamed the genus Ixamadus. 



Genus Ixamadus, E. Sim.^ 



Type. /. varius (L. K.), E. Sim. Bull. Soc. Zool. Fr. 1887, note, 

 6 ? . Hah. Port Bowen, Australia. 



' S. longipes, n. sp., $ . Hah. Trinidad. Type specimen in coll. Brit. Mu3. 

 Nat. Hist. 1896. 



Colotcr. Carapace malioganj -brown, clotlied with sandy-yellow hairs. Man- 

 dibles clothed with short sandy yellow hairs (no long ones as in pococki). 

 Abdomen clothed with sandy yellow-grey hairs. Ooxte of i., ii., iii., and iv., 

 femora of i. and ii. deep chocolate-brown underneath ; the latter clothed above 

 and on sides with sandy-yellow hairs. Underside of tlbite i. and ii, clothed 

 with sandy-yellow hairs, glossy. PatelloB and tibiio of legs without longitudinal 

 stripes. Patella and tibia i. longer than carapace (25 mm. — 21 mm.). Habits 

 unknown. Carapace 21 X 18 mm. 



' In Hist. Nat. Ar. 1892, p. 180, the name has been misprinted Ixamatus. 



