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Bartolo is a name applied to two nearby caves (designatedas Sur and Norte); it is not known from whichcave the type series was collected.Schizomus cookei RowlandSchizomus cookei Rowland, 1971b:122·123, fig. 10­12, 19; Reddell and Mitchell, 1971a:145; Dumitresco,1973:291; Reddell, 1973a:38; Rowland,1973c:135; BrignoIi, 1974a:146; Rowland, 1975a:34, 166, 167·168, 169, 181, 182, 210-211, 212,213,216-217,218-219, 220-221, 228,231,366­367, 368-369, 395, fig. 165, 180, 183-184,292;Rowland and Reddell, 1977:80, 84, 85, fig. 2;Rowland and Reddell, 1979a: 163.Type-Iocality.-Sotano de la Tinaja, 10.5 km NEof Ciudad Valles, San Luis Potosi, Mexico.Distribution.-Known only from two caves northof Valles in the Sierra de EI Abra, San Luis Potosi.See Fig. 23.Records.-San Luis POtOSI: Sotano de la Tinajaand Sotano de Yerbaniz.Discussion.-This elongate species is sympatric inboth of these caves with Agastoschizomus lucifer; italso occurs with S. mexicanus in Sotano de la Tinaja.Extensive epigean collections have failed to includeS. cookei, although S. mexicanus is abundant on thesurface throughout the Sierra de EI Abra.GUATEMALA,. //\.... r.--/Fig. 22.-Distrihution of troglophilic schizomids of the family Schizomidae: 1, Schizomus mexicanus; 2, S. lanceolatus;3, S. sbordonii; 4, S. moisii; 5, S. stewarti; 6, S. trilobatus; 7, S. arganoi; 8, S. portoricensis.127