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Cave. Paracophus caecus appears to have descendedfrom a common ancestor from which P. apterus andP. placonotus and their allies also later developed(Hubbell, 1972). Paracophus caecus is found underrocks, but it is also often collected from cave wallsand from among stalactites. It has been observedcopulating in several caves while sitting on stalagmitesor stalactites.Paracophus cladonotus HubbellParacophus sp.: Reddell, 1967d:106; Reddell, 1971b:55 (Sotano del Pozo and Sotano de Tlamayarecords only).Paracophus cladonotus Hubbell, 1972:51,52,57,58,74, 76, 77, 80, 84-87, fig. 1(8),2(9-10, 16),3(18,22,26-27),5(36); Reddell, 1973a:35, 40.Type-locaIity.-Sotano de Tlamaya, San Luis Potosi,Mexico.Distribution.-Known from caves in southern SanLuis Potosi and adjacent Hidalgo. See Fig. 69.Records.-Hidalgo: Cueva de Piedra Ancha andCueva de EI Tenango; San Luis Potosi: Sotano deGuadalupe, Cueva de la Luz, Cueva de los Potrerillos,Sotano del Pozo, Cueva de San Nicolas, and Sotanode Tlamaya.GUATEMALA,... ...;./, ./rr'"'Fig. 69.-Distribution of troglobitic crickets of the family Gryllidae: 1, Paracophw caecus; 2, P. lippus; 3, P. cladonotus;4, Tohila atelomma.208