764 MB. F. o. PiOKAKD CAMBRIDGE ON [June 16, 



The following species belonging to this genus have been described 

 from the We'st Indies, Central America, and Bi-azil : — 



2. caudata, Auss., $ . Type of gonus Ischiwthele ; in. coll. Brit. 

 Mus. Nat. Hist. Ilab. Yucatan, Mexico. — Verbandlungen etc. 

 Wien, 1876, p. 153. 



I. guyanensis (Wa.\ck.)— (Sim.), d (sub Mygale). Hah. Guyana. 

 —Ins. Apt. i. 1837, p. 231. 



/. zehrina (E. Sim.), J (sub Thelechoris), Actes Soc. L. Bordeaux, 

 xliv. p. 321, 1891 & 1892. Ilab. Nicaragua. 



I.digitata (Cambr.), d ? (sub Macrolhele). Hah. Guatemala. 

 — Biol. Centr.-Amer., Aran. 1891, p. 92, pi. xii. fig. 3. Type in 

 coll. O. P. C. 



I. pusilla(E. Sim.), 6 ? (sub Entomothde). Hah. Venezuela. — 

 Ann. Soc. Ent. Fr. 1888, p. 246. 



Note. — Thelechoris rutenheryi, Karsch, type of genus Thele- 

 choris, Abhl. d. naturw. Ver. Bremen, vii. 1881, p. 196, is a native 

 of Madagascar, and may or may not be congeneric with /. caudata, 

 Auss., and /. gmjanensis, Walck. 



Thelechoris striaiipes (Sim.) (sub Entomothele), Ann. Soc.' Ent. 

 Fr. 1888, p. 246, is also a native of Madagascar, and is set down 

 as a synonym of T. rutenhergi by M. Simon, on the authority of 

 Dr. Lenz, in Hist. Nat. Ar. i. 1892, p. 187. 



Table of Specific Characters. 



A. Carapace unicolorous testaceous brown. 



1. Abdomen unicolorous ; clotbed with Bilky rufoua- 



golden pubescence. (11 mm. long, $ .) I. caudata, Aass. 



2. Abdomen with central dorsal longitudinal series 



ol' transverse dull orange A-sbaped bars, t!ie 

 first half separate, the second united on the 

 median line. Sides towards apex speckled 

 with dull orange spots. 



o. Size larger, 18 mm. long, J I. dlffiluta {Camhr.). 



b. Size smaller, 10-11 mm. long. (Fomalos.) 

 * Abdomen black, spotted with dull testa- 

 ceous, and on the second half ornamented 

 with two rows of short, oblique, testaceous 

 lines, three on each side. 

 Anterior row of eyes, seen from above, forming 

 an almost straight lino. Anterior centrals 

 slightly smaller than laterals. Laterals on 

 either side all but in contact with each 

 other. The anterior lateral larger than 



the i)0steriiir lateral /. schrina (E. Sim.). 



** Abdomen dull purple-brown, speckled with 



dull testaceous spots on sides towards apex; 



with central dorsal longitudinal series of 6 



transverse dull orange A-shaped bars, the 



first three separate, the second three united 



on the median line. 



Anterior row of eyes slightly procurved 



(posterior margin of laterals aligned with 



centre of medians). Anterior centrals 



slightly smaller than laterals. Laterals 



distinctly separate; anteriors slightly 



larger than posteriors /. guyanensis (Walck.). 



