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ACKNOWLEDGMENTSPrimary thanks go to James R. Reddell, withoutwhose important collection of Texas cave harvestmenthis project would never have beenendeavored, for his help in locating the cavelocalities and providing information on the habitatsof Texella, and for his hospitality and fieldassistance during a visit to Texas. Appreciation forassistance in field work is extended to Steven V.Fend and Saelon K. Renkes, who made possible atrip to Texas (for DU).Norman I. Platnick kindly loaned the AMNHholdings of Phalangodidae and made a special effortto make available unsorted material. Jonathan A.Coddington, James C. Cokendolpher, and WilliamA. Shear quickly responded to our request for specimens.W. Calvin Welbourn provided informationon the New Mexican cave localities. Willis J.Gertsch generously shared his unpublished informationon the distribution of Telemidae and othercavernicolous spiders.Many thanks go to Mary Ann Tenorio for invaluableassistance and expert advice on the SEM andfor help in artistic matters, especially in the preparationof the diagram and maps. Thanks also go toSaelon K. Renkes for assistance in developing theSEM prints. Paul H. Arnaud, Jr., is thanked forpermission to use the research facilities at the CAS.Appreciation is extended to James C. Cokendolpher,Warren C. Rauscher, James R. Reddell,and William A. Shear for their helpful commentsand criticisms on a preliminary draft of this manuscript.The Exline-Frizzell Fund for ArachnologicalResearch, from the California Academy of Sciences,defrayed the costs associated with use of thescanning electron microscope and the preparation ofplates.LITERATURE CITEDBriggs, T. S. 1968. Phalangids of the laniatorid genus Sitalcina(phalangodidae: Opiliones). Proc. California Acad. Sci.,36:1-32.Briggs, T. S. 1974. Phalangodidae from caves of the SierraNevada (California) with a redescription of the type genus(Opiliones: Phalangodidae). Occas. Pap. California Acad.Sci., 108:1-15.Briggs, T. S. and K. Hom. 1972. A cavernicolous whipscorpionfrom the northern Mojave Desert, California(Schizomida: Schizomidae). Occas. Pap. California Acad.Sci., 98:1-7.Briggs, T. S. and D. Ubick. 1981. Studies on cave harvestmenof the central Sierra Nevada with descriptions of new speciesof Banksula. Proc. California Acad. Sci., 42:315-322.Briggs, T. S. and D. Ubick. 1989. The harvestman familyPhalangodidae. 2. The new genus Microcina (Opiliones:Laniatores). J. Arachnol., 17:207-220.Brignoli, P. M. 1968. Note su Sironidae, Phalangodidae eTrogulidae italiani, cavernicoli ed endogei (Opiliones).Fragm. Entomol., 5:259-293.Davis, J. C. 1979. A faunal survey of Ezell's Cave, HaysCounty, Texas. Unpublished thesis. San Marcos: SouthwestTexas State University.Gertsch, W. J. 1974. 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Spinnentiere, Arachnida-Weberknechte,Opiliones. Die Tierwelt Deutschlands, 64:1-464. Jena:Fischer.Martens, 1., U. Hoheisel, and M. GolZe. 1981. VergleichendeAnatomie der Legerohren der Opiliones als Beitrag zurPhylogenie der Ordnung (Arachnida). Zool. Jb. Anat.,105:13-76.Mitchell, R. W. and 1. R. Reddell. 1971. The invertebratefauna of Texas caves, pp. 35-90. In: E. L. Lundelius andB. H. Slaughter, eds., Natural history of Texas caves.Dallas, Texas: Gulf Natural History Press. 174 pp.Murphree, C. S. 1988. Morphology of the dorsal integument often opilionid species (Arachnida, Opiliones). J. Arachnol.,16:237-252.Reddell, 1. R. 1965. A checklist of the cave fauna of Texas. I.The Invertebrata (exclusive of Insecta). Texas 1. Sci.,17(2):143-187.Shear, W. A. 1974. North American cave millipeds. II. Anunusual new species (Dorypetalidae) from southernCalifornia, and new records of Speodesmlls tllganbilLS(Trichopolydesmidae) from New Mexico. Occas. PapersCalifornia Acad. Sci.,112:1-9.Silberling, N. 1., D. L. Jones, M. C. Blake, Jr., and D. G.Howell. 1984. Lithoteclonic Terrane maps of the NorthAmerican Cordillera. U. S. Geol. Survey Open File Report84-523.Ubick, D. and T. S. Briggs. 1989. The harvestmen familyPhalangodidae. I. The new genus Calicina, with notes onSitulcina (Opiliones: Laniatores). Proc. California Acad.Sci., 46:95-136.This is publication No. N.S.-60 of the Texas Memorial Museum.240