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Show 764 MR. F. O. PICKARD CAMBRIDGE ON [June 16, The following species belonging to this genus have been described from the West Indies, Central America, and Brazil:- I. caudata, Auss., $ . Type of genus Ischnothele; in. coll. Brit. Mus. Nat. Hist. Hab. Yucatan, Mexico.-Verhandlungen etc. Wien, 1876, p. 153. 2. guyanensis (Walck.)-(Sim.), 6 (sub Mygale). Hab. Guyana. -Ins. Apt, i. 1837, p. 231. I. zebrlno (E. Sim.), $ (sub Thelechorls), Actes Soc. L. Bordeaux, xliv. p. 321, 1891 & 1892. Hab. Nicaragua. I", digltata (Cambr.), tf 2 (sub Macrothele). Hah. Guatemala. -Biol. Centr.-Amer., Aran. 1891, p. 92, pl. xii. fig. 3. Type in coll. 0. P. C. I. pusllla(E. Sim.), <5 $ (sub Entomothele). Hab. Venezuela.- Ann. Soc. Ent. Fr. 1888, p. 246. NOTE.-Thelechorls rutenbergl, Karsch, type of genus TMe-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 /. guyanensis, Walck. Thelechorls strlatlpes (Sim.) (sub Entomothele), Ann. Soc. Pr. 1888, p. 246, is also a native of Madagascar, and is set down as a synonym of T. rutenbergl 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 ; clothed with silky rufous-golden pubescence. (11 m m . long, 2 •) 2. Abdomen with central dorsal longitudinal series of transverse dull orange A-shaped bars, the first balf separate, the second united on the median line. Sides towards apex speckled with dull orange spots. a. Size larger, 18 m m . long, 2 b. Size smaller, 10-11 ram. long. (Females.) * Abdomen black, spotted with dull testaceous, 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 line. Anterior centrals slightly smaller than laterals. Laterals on either side all but in contact with each other. The anterior lateral larger than the posterior lateral ** 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 /. caudata, Auss. 7. digitata (Cambr.). I. zebrina (E. Sim.). 1. gugantnsis (Walck.). |