730 Mfi,. p. 6. PiOKAftB Oambeidgb oi^ [June 16, 



their tubes, six or eight inches long, silk-lined, with hinged doors 

 at the entrance, in the sides of a large termite mound, whose 

 damp walls afforded exactly the locality needed for such nests. 

 No males were taken. 



The following species have been described which probably belong 

 to the same genus : — 



Actinopus tarsalis, Perty, Del. Anim. Art. 1833, p. 39, fig. 6. 

 Brazil. 



A. nijipes (Lucas), 5 (sub Pachyloscelis), Ann. Soc. Ent. Fr. 

 1833, p. 361. Brazil. 



A. scalops (8im.), $,ceph. 10 mm. long, (sub Pachyloscelis), 

 Ann. Soc. Ent. Er. 1889, p. 176. Venezuela. 



A. cai-diba (Sim.), J , ceph. 9-5 mm. long., Ann. Soc. Ent. Er. 

 1889, p. 175. Caraccas ; Venezuela. 



A. valeiicianus {Sim.), $ ,ceph. 5'3 mm. long, (pullus), Ann. Soc. 

 Ent. Er. 1889, p. 177. Valencia, Venezuela. 



A. rojasi (Sim.), 5 , ceph. 7 mm. long, (non plane adulta), Ann. 

 Soc. Ent. Er. 1889, p. 176. Caraccas ; Venezuela. 



A. loncjipalph, 0. K., 6 , Die Arachniden, ix. p. 102, pi. cccxxiv. 

 fig. 754. Montevideo. (Type in coll. Mus. Berlin.) 



A. nattereri, Auss., 5 (Doleschall in MS.), Verhandluagen &c. 

 1871, p. 139. Eio Negro. 



A. liodon, i.uss., ^ , Verhandlungen &c. 1875, p. 142. Uruguay. 

 (Type in coll. Brit. Mus. Nat. Hist.) 



A. crassipe^ (Keys.), 5> Spinnen Amer. iii. p. 3, pi. i. fig. 1. 

 Taguara, llio Grande do Sul. (Type in coll. Brit. Mus. Nat. Hist.) 



A. luteipes (Keys.), 2 (immature), Spinnen Amer. iii. p. 5. Rio 

 Janeiro. (Type in coll. Brit. Mus. Nat. Hist.) 



A. insiynis, Holraberg, Ann. Soc. Argent, xi. p. 171, 1886. 

 Argentine Republic. 



A. piceus, Auss., d , Verhandlungen &c. 1871, p. 139. Locality 

 unknown. 



A. hartii, Poc, $ , Ann. Mag. Nat. Hist. ser. 6, vol. xvi., Aug. 

 1895. Trinidad. (Type in coll. Brit. Mus. Nat. Hist.) 



The following table may be of some assistance in distinguishing 

 the females of the seven species of which we have adequate 

 descriptions or type specimens. 



The value of the charactors, however, especially those drawn 

 fniiii tlio eyes, entirely depends upon the number of specimens 

 compared before the character iixed upon was set down, and for 

 this of course 1 cannot be responsible. 



Out of thirteen examples of A. waZZacet (?) in all stages of 

 development, I find that the central posterior eyes are sometimes 

 smaller, sometimes equal to, and sometimes larger than, the 

 posterior laterals. Sometimes these are almost in contact with 

 one another, sometimes two diameters apart. In the immature 

 especially, the posterior centrals are closer to, and smaller than, 

 the laterals. Amongst the adults, in the majority, but not in 

 all, the axis of the central posteriors is longer than the diameter 



