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Type-Iocality.-Cueva del Puerto del Leon, 6.5 kmSE of Rio Blanco, Queretaro, Mexico.Distribution.-Known only from three caves inQueretaro. See Fig. 28.New records.-Quenitaro: Cueva de los Otates andCueva de Penalta (det. W.]. Gertsch).Discussion.-This pale, orange-brown species hasthe eyes greatly reduced in size. It is apparentlyclosely related to T. blanda.Family AmaurobiidaeThe family Amaurobiidae includes one specieswhich has been identified from a cave in Mexico.Nicholas (1962) lists Titanoeca tizamina Chamberlinand Ivie from MuruztUn Cave, Yucatan, as a troglobite.This species, now known as Goeldia tizamina,shows no modifications for a cave existence andshould be considered a troglophile. It is widespreadin caves in Yucatan. An undescribed species of Titanoecais known from Cueva Languin, Alta Verapaz,Guatemala.Family AraneidaeAlthough 15 species of the family Araneidae havebeen recorded from caves, none appears to be particularlyadapted for cave life, and most are probablyaccidentals. Nicholas (1962) has included Leucageloltuna Chamberlin and Ivie from Actun LoltUn, Yucatan,as a troglobite; this species, however, is probablya troglophile. The genus Azilia is frequentlyfound in Mexican caves. Azilia affinis O. P.­Cambridge has been collected in caves in Chiapas andVeracruz, while A. vagepicta Simon is common incaves of the Sierra de Guatemala, Tamaulipas. Otherundetermined specimens belonging to Azilia havebeen collected from caves in Oaxaca, San Luis Potosi,and Veracruz.Family ClubionidaeMembers of the family Clubionidae are frequentlytaken in caves, but few species have yet been identified.The genera most commonly found are Corinnaand Phrurotimpus. Corinna saga F. P.-Cambridge hasbeen found in several caves in Yucatan. Tixcocobamaya Gertsch is known from several caves in northernYucatan and from epigean sites in Campeche andYucatan (Gertsch, 1977b).Family CtenidaeThe family Ctenidae is an abundant element of thecave fauna of much of Mexico. Only one species hasbeen described, but several others doubtless occur.Ctenus mitchelli Gertsch is a large, interesting speciesfrom San Luis Potosi and Tamaulipas. It is found inall parts of caves but may be seen most often on thewalls of dark rooms near the cave entrance. It probablyshould be classified as a troglophile.Family FilistatidaeFive species of the family Filistatidae are knownto occur in Mexican caves, but only one is of particularinterest. An undescribed species of Filistatoideshas been found in numerous caves in Nuevo Leon andCoahuila. It is probably a troglophile.Family GnaphosidaeNicholas (1962) listed the gnaphosid Zelotes mayanusChamberlin and lvie from Actun Sabaca, Yucatan,as a troglobite. This species shows no signs ofadaptation for a cave existence. Other gnaphosid speciesknown from caves in !\lexico are Z. rusticus (L.Koch) from Cueva del Leon, Coahuila, and Drassodespallidipalpis (Bilimek) from Grutas de Cacahuamilpa,Guerrero.Family LeptonetidaeThe family Leptonetidae has contributed fivetroglobitic and five troglophilic species to the cavefauna of Mexico (see Fig. 29). One of the troglophiles,Archoleptoneta obscura Gertsch, from Cuevadel Tio Ticho, Chiapas, is a primitive leptonetid mostclosely related to species from California and Texas(Gertsch, 1974). Brignoli (1974b) described Seoleptonetaarganoi from Cueva Grande de San A~lIstln,Chiapas; this species has heen removed to Archoleptonetaby Brignoli (1977). The remaining troglophilicleptonetds all belong in lilt: genus Leptoneta.Leptoneta bonita Gertsch was described from CuevaBonita, Tamaulipas. Leptoneta pecki Gerlsch isknown only from Grutas de San Barlolo, 0lllevoLeon. Leptoneta rainesi Gertsch is a species knownfrom caves in the Sierra de El Abra, Tamaulipas.Leptoneta capilla GertschLeptoneta capilla Gertsch, 1971a:48, 52, 53, fig. 1-2;Reddell and Mitchell, 1971b: 186; Brignoli, 1972:134; Mitchell and Kawakatsu, 1973a:673; Reddelland Elliott, 1973b:181, 184; Gertsch, 1974:145,147, 177, 178, 179, 180, fig. 82,84,92,115-116,119; Hoffmann, 1976:81.Leptoneta sp.: Reddell and Mitchell, 1971b: 186(Cueva de la Mina record only).Neoleptoneta capilla: Brignoli, 1972:134, 135-136,137, 139, fig. 1(6-10); Reddell, 1973a:33, 38;Hoffmann, 1976:21, 81; Brignoli, 1977:216;Brignoli, 1979a:233, fig. 4.Type-Iocality.-Cueva de la Capilla, 13.5 km i\Wof Gomez Fari~s, Tamaulipas, Mexico.138