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Palp (Fig. 25) rather slender, a little more so infemales than in males; trochanter 1.75-2.1, femur2.6-3.25, tibia 2.3-2.7, and chela (without pedicel)2.8-3.4 times as long as broad; hand (withoutpedicel) 1.45-1.75 times as long as deep; movablefinger 0.92-1.05 as long as hand. Surfaces finelygranulate except chelal fingers smooth; setae mostlyshort, denticulate. Trichobothria as shown in Fig.26. Fixed chelal finger with 38-46 cusped marginalteeth; movable fmger with 41-50 teeth, similar exceptproximal 8-10 rounded; each finger with 3-6accessory teeth, both internal and external. Venomapparatus well developed in movable finger; nodusramosus usually just distad of trichobothrium sl, butjust proximad of sl in holotype.Legs quite slender; leg IV (Fig. 27) with entirefemur 4.5-5.4 and tibia 5.7-7.0 times as long asdeep. Tarsus of leg IV with a short, acuminate tactileseta about 3/4 length of segment from proximalend.Measurements (mm).-Figures given first forholotype followed in parentheses by ranges of allotypeand mounted paratypes. Body length 2.25(2.04-2.81). Carapace length 0.805 (0.74-0.88).Chelicera length 0.265 (0.23-0.29). Palpal trochanter0.39 (0.34-0.445) by 0.22 (0.185-0.245);femur 0.74 (0.67-0.82) by 0.27 (0.27-0.29); tibia0.665 (0.60-0.725) by 0.285 (0.24-0.29); chela(without pedicel) 1.07 (0.98-1.30) by 0.38 (0.33­0.41); hand (without pedicel) 0.57 (0.50-0.64) by0.385 (0.33-0.41); pedicel about 0.10 long; movablefinger length 0.56 (0.50-0.62). Leg IV: entirefemur 0.65 (0.60-0.75) by 0.14 (0.12-0.15); tibia0.57 (0.51-0.64) by 0.09 (0.08-0.095); tarsus 0.465(0.40-0.48) by 0.065 (0.06-0.075).Etymology.-Tbe new species is named cavicolusfor its habitat in a cave.Remarks.-Dinocheirus cavicolus appears to bemodified for cave existence in the same way thatHesperochernes occidenralis and H. mirabilis are,i.e. by having a thinner cuticle than epigean fonus,by having more attenuated appendages, and by reductionin the number of setae on the body.Dinocheirus, sp. indet.In the collections from Texas caves are twospecimens which cannot be identified with certaintyat this time: one tritonymph from Wheat Cave, NWcomer of Edwards County, Texas, 21 September1963 (J. Reddell and D. McKenzie) (lCC); one femalefrom Arrowhead Cave, 3 mi. N San Marcos,Hays County, Texas, 1983 (A.G. Grubbs) (FSCA).Chernetidae, gen. et sp. indet.Several unidentifiable nymphs are at hand: onefrom 400 Foot Cave, Brewster County, Texas, 30June 1985 (A.G. Grubbs); one from Harrell's Cave,on Pete Sloan Ranch about 2 mi. W Chappell, SanSaba County, Texas; 2 from Springdale RanchCave, San Saba County, Texas, 22 October 1989(R.C. Matthews, Jr.); 3 from Secret Valley Cave,Uvalde County, Texas, February 1984 (R.M.Waters).ACKNOWLEDGMENTSMany sincere thanks are due to the collectors ofthe specimens reported herein, and especially toJames Reddell, who not only collected most of thematerial but also strongly encouraged and supportedthis publication. I am also indebted to C.R. Hignuttfor drawing some of the figures. An anonymous reviewermade many comments which have helped toimprove the manuscript.LITERATURE CITEDBanks, N. 1895. Notes on the Pseudoscorpionida. J. New YorkEntomo!' Soc., 3:1-13.Banks, N. 1909. New tropical pseudoscorpions. J. New YorkEntomol. Soc., 17:145-148.Banks, N. 1908. The pseudoscorpions of Texas. Bull. WisconsinNat. His!. Soc., 6:39-42.Barr, T.C., Jr., and J.R. Reddell. 1967. The arthropod cavefauna of the Carlsbad Caverns region, New Mexico. SouthwesternNat., 12:253-274.Beier, M. 1932a. Pseudoscorpionidea I. Subord. Chthoniinea etNeobisiinea. Tierreich, 57:1-258.Beier, M. 1932b. Pseudoscorpionidea ll. Subord. C. Cheliferinea.Tierreich, 58:1-294.Benedict, E.M. 1978. False scorpions of the genusApocheiridium Chamberlin from western North America(pseudoscorpionida, Cheiridiidae). J. Arachno!., 5 :231-241.Chamberlin, J.C. 1924a. The Cheiridiinae of North America.Pan-Pacific Entomo!., 1:32-40.Chamberlin, LC. 1924b. Hesperochemes [aurae, a new speciesof false scorpion from California inhabiting the nest ofVespa. Pan-Pacific Entomol., 1:89-92.Chamberlin, LC. 1929a. A synoptic classification of the falsescorpions or chela-spinners, with a report on a cosmopolitancollection of the same.- Part I. The Heterosphyronida(Chthoniidae) (Arachnida-Chelonethida). Ann. Mag. Nat.Hist., (\0),4:50-80.Chamberlin, LC. 1929b. Dinocheirns lenoch, an hitherto undescribedgenus and species of false scorpion from Mexico(Arachnida-Chelonethida). Pan-Pacific Entomol., 5: 171-173.Chamberlin, J.C. 1930. A synoptic classification of the falsescorpions or chela-spinners, with a report on a cosmopolitancollection of the same.- Part ll. The Diplosphyronida(Arachnida-Chelonethida). Ann. Mag. Nat. His!., (10),5:1-48,585-620.Chamberlin, J.C. 1931. The arachnid order Chelonethida.Stanford Univ. Pub!. Bio!' Sci., 7:1-284.150