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cies of carabid beetle of great interest were discovered(Barr, 1966a; 1967a). On April 8. 1965, Jorge Urquijoand Antonio Guerrero revisited Sotano del Profesorat Tequila, Veracruz, and obtained additional specimensof the blind carabid Mexisphodrus veraecrucis.In July 1965 William Russell led a reconnaissancetrip to Huautla de Jimenez, Oaxaca. This great karstregion now is known to include some of the deeperknown caves in the Western Hemisphere. Many newspecies were obtained on the trip, but most of theresults remain unpublished. During the same monthJohn Fish, Terry Raines, and James Reddell conducteda reconnaissance trip to several caves in northcentral Mexico, including caves in Coahuila, Chihuahua,and Durango. In August William Bell, John Fish,and James Reddell explored caves in Hidalgo, Guerrero,and Veracruz; among the fauna collected werenew species of troglobitic spider beetle (Spilman,1968) and rhachodesmid milliped (Causey, 1973).In February 1966 William Bell and James Reddellexplored several caves in Coahuila, Chihuahua, andDurango. The most notable find was a second speciesof relict ricinuleid from western Mexico, in Cueva delGuano, Durango (Gertsch, 1971b). In June severalgypsum caves near Galeana, Nuevo Leon, were visitedby David McKenzie, Orion Knox, A. Richard Smith,and James Reddell. New species of catopid (Peck,1973c) and blind spider (Gertsch, 1971a) were discoveredin Resumidero del Pablillo.In August 1966 Francis Abernethy, Robert W.Mitchell, and William Rhodes visited several caves inthe Sierra de Guatemala, Tamaulipas. While exploringCueva de la Mina, Rhodes discovered the first eyelessscorpion in the world. It was' described by Mitchell(1968) as Typhlochactas rhodesi. Also in AugustJohn Fish, David McKenzie, James Reddell, andRichard M. Smith made the first biological collectionsin the gypsum karst area of Matehuala, San Luis Potosi;the karst region of Valle de los Fantasmas, SanLuis Potosi; and the karst region of Pinal de Amoles,Queretaro. In Sotano de Tejamanil, Queretaro, theydiscovered two species of eyeless trechine beetle(Barr, 1967d). In November John Fish and JonathanDavis discovered a third new species of trechine in asecond visit to Valle de los Fantasmas (Barr, 1967d).In December Terry Raines led a trip to the Caftan deHuasteca in Nuevo Leon. He discovered in Grutas deSan Bartolo a new species of troglobitic schizomid(Rowland, 1973a).In June 1967 Francis Abernethy, Robert Mitchell,James Reddell, and Pierre Strinati visited several cavesin the Sierra de Guatemala and Sierra de EI Abra.This resulted in the collection of new species ofcollembolans (Christiansen, 1973), as well as supplementingprevious collections. During the same yearcollections by Robert Mitchell, James Reddell, SuzanneWiley, and other members of the Departmer.tof Biology of Texas Tech University in Lubbock,Texas, were made in numerous caves in these twokarst regions. Discoveries included many new populationsof troglobite and troglophile, including blindfish of the genus Astyanax.In July 1967 John Fish, James Reddell, and PhilipRussell explored caves near Pinal de Amoles, Queretaro;Ciudad de Maiz and Xilitla, San Luis Potosi; andCiudad Victoria, Tamaulipas. Among many troglobitescollected were specimens of the first species ofblind theraphosid tarantula (Gertsch, 1971a) and newspecies of rhaphidophorid and gryllid crickets (Hubbell,1972).T. R. Evans, John Fish, James Reddell, and MillsTandy in August 1967 visited caves near Cordoba andTequila, Veracruz; Huautla de Jimenez, Oaxaca; andat several localities in Chiapas. Numerous troglobitesof considerable interest were obtained, but probablythe most singular discovery was of a second species oftroglobitic scorpion in Cueva del Ojo de Agua de Tlilapan,Veracruz. This species was described by Mitchell(1968) as Typhlochactas reddelli. Other species ofinterest included additional specimens of the blindcrab, Typhlopseudothelphusa mocinoi, in Cueva delTio Ticho, Chiapas; a new species of troglobitic collembolannear Huautla de Jimenez, Oaxaca (Christiansen,1973); and a new species of cavernicolousricinuleid from Chiapas (Gertsch, 1971b). In SeptemberJohn Fish and William Russell made the firstcollections in the caves of the karst region of Aquisman,San Luis Potosi.Collections in 1968 were made primarily in theSierra de Guatemala and Sierra de El Abra by R. W.Mitchell, James Reddell, and their associates at TexasTech University. Cueva de la Capilla, near El Porvenirin the Sierra de Guatemala, was visited for the firsttime on January 28 by John George, R. W. Mitchell,James Reddell, and Francis Rose. Discovered in thiscave were new species of cave-adapted earthworm(Gates, 1971), spider (Gertsch, 1971a), phalangid(Goodnight and Goodnight, 1971), catopid beetle(peck, 1968), and trechine beetle (Barr, 1971).Several caves in the Valle de los Fantasmas regionof San Luis Potosi were visited in November 1968by William Elliott, Jimmy Jarl, and members of theSouthwest Texas Grotto at San Marcos, Texas.Among the fauna collected was a new genus andspecies of troglobitic milliped (Causey, 1969).Between 1966 and 1968 numerous collectionswere made by G. A. Cole, W. 1. Minckley, D. W.Taylor, J. J. Landye, and others in the pozos and9