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springs in the vicinity of Cautro Cienegas de Carranza,Coahuila. This unusual region produced a new genusand two new species of amphipod (Holsinger andMinckley, 1971), a new genus and species of stenasellidisopod (Cole and Minckley, 1972), and a newgenus and two new species of cirolanid isopod (Coleand Minckley, 1970).In January 1969 several caves in the Sierra de EIAbra were visited by R. W. Mitchell, James Reddell,and William Russell. A collection made in Cueva Pintaincluded a new species of trichoniscid isopod (Schultz,1970a). In March several caves in the Sierra de Guatemalaand Sierra de EI Abra were visited by R. W.Mitchell, James Reddell, Suzanne Wiley, and others.The most notable collection was of a new species ofpseudoscorpion in Cueva de la Florida, Tamaulipas(Muchmore, 1972c). Aerial reconnaissance of theSierra de EI Abra was conducted by Robert W.Mitchell, Richard O. Albert, and William Russellduring 1969 with the result that numerous new cavescontaining blind fish of the genus Astyanax were located.On July 31, 1969, William Elliott collected thethird species of blind scorpion to be found; it wastaken from Sotano de Yerbaniz, San Luis Potosi, andwas described by Mitchell (1971b) as Typhlochactaselliotti.From June 18 to September 13, 1969, Stewart B.Peck and James H. Peck conducted a field trip tomany parts of Mexico and Guatemala (Peck andPeck, 1973). Their field trip resulted in the collectionof several new species of troglobite. Among areasvisited were Cuesta de Chipinque, Cueva de Chorrosde Agua, and Cueva de la Boca, Nuevo Leon; theSierra de Guatemala and northern Sierra de EI Abra,Tamaulipas; the southern Sierra de EI Abra and theXilitla region, San Luis Potosi; Pinal de Amoles,Queretaro; Paraje Nuevo and Tlilapan, Veracruz; theChiapas higWands; and several areas in Guatemala.Among the many new species discovered were blindspiders (Gertsch, 1971a) and blind millipeds (Shear,1972; 1974).From October 10 to December 9,1969, the AccademiaNazionale dei Lincei of Italy sponsored a zoologicalexpedition to Mexico. It was conducted byValerio Sbordoni, Roberto Argano, and VittorioParisi. They visited 17 caves during the course of theirexpedition, including caves in the Sierra de Guatemala,Tamaulipas; Sierra de EI Abra, San Luis Potosiand Tamaulipas; western Xilitla region, Queretaro;Cacahuamilpa region of Guerrero and Mexico; andcaves near Orizaba and Cordoba, Veracruz. Althoughmost of their collections included only species previouslystudied, several at that time were still undescribedand a few additional forms of interest wereobtained. Many of the results of this expedition werecollected in a volume edited by Sbordoni and Arganoand published in 1972.In March 1970 two German zoologists, HorstWilkens and Jakob Parzefall, visited several caves inthe vicinity of Micos, San Luis Potosi, for the primarypurpose of collecting and studying new populationsof blind Astyanax. Among the fauna collectedwere two new species of troglobitic stenasellid isopodin Cueva del Huisache (Magniez, 1972). The Sierra deTamaulipas, Tamaulipas, was visited for the first timewhen, on October 31, 1970, William Russell, Gil Ediger,and Jill Ediger explored and made collections intwo caves there. Most of the remaining work of theAssociation for Mexican Cave Studies in 1970 wasdevoted to the continuing study of the caves of theSierra de EI Abra.In January 1971 Jerry Cooke, William Elliott,Robert W. Mitchell, James Reddell, Suzanne Wiley,and others from Texas Tech University were joinedby Dr. Masaharu Kawakatsu of Fuji Women's College,Japan, on a trip to the Sierra de Guatemala, Tamaulipas.Among numerous specimens collected were twotroglobitic and one troglophilic flatworm of the genusDugesia, the first to be reported from Mexico (Mitchelland Kawakatsu, 1973a).The Second Zoological Mission to Mexico sponsoredby the Accademia Nazionale dei Lincei wasconducted from January 24 to April 11, 1971, byValerio Sbordoni, Roberto Argano, and Aldo Zullini.This expedition was devoted entirely to extremesouthern Mexico and adjacent Guatemala. Two caveswere visited in Tabasco and 24 in Chiapas. The resultsof this trip, together with additional studies of speciescollected on the First Zoological Mission to Mexico,were published in 1974 in a volume edited by Sbordoni,Argano, and Zullini. This expedition to southernMexico resulted in the discovery of many speciesof interest, among them the first nematodes to bereported from caves in Chiapas (Zullini, 1974), newspecies of troglobitic amphipods (Ruffo and VignaTaglianti, 1974), shrimp (Holthuis, 1974), opilionid(Silhavy, 1974), milliped (Shear, 1974), anillinebeetle (Vigna Taglianti, 1974), histerid beetle (Vomero,1974), and ricinuleid (Brignoli, 1974c).In September 1971 Terry Raines visited severalcaves in the Canon de Huasteca region of NuevoLeon. In Sotano del Anticlino he discovered a newspecies of endemic earthworm (Gates, 1973). InNovember David McKenzie and William Russellvisited Cueva del Ojo de Agua de Manantiales, SanLuis Potosi, where they collected a new genus andspecies of troglobitic trichopolydesmid milliped(Causey, 1973). They also visited Cueva del Hui-10