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and Acuminochernes, along with the closely relatedHesperochernes and Chernes.Dinocheirus cavicolus, new speciesFigs. 25-27Type-data.-Holotype male (WMI744.01002),allotype female (WM1744.01005) and 11 paratypes(2 males, 8 females, 1 nymph) in guano of Myotisvelifer (J.A. Allen), Fawcett's Cave, 36 miles N DelRio, Val Verde County, Texas, 10 April 1968 (J.Reddell) (FSCA); 2 males, 2 females, same locality,29 March 1975 (R.W. Mitchell) (FSCA); 1 female,Sumac Pit, Kinney County, Texas, October 1987(A.G. Grubbs) (FSCA); 2 males, 3 females, 2nymphs, Rattlesnake Cave, Kinney County, Texas,3 May 1964 (J. Reddell and D. McKenzie) (JCC).Most adults mounted on slides.Diagnosis.-Similar to D. athleticus Hoff inbody size but with more slender appendages, especiallythe legs (femur of leg IV LIB = 4.5-5.4,rather than 3.3-3.5).Description.-Male and female generally similar,both sexes quite varied. Carapace light brown, palpsbrown, other parts much lighter. Carapace longerthan broad; surface with low granules, 2 distincttransverse furrows; no eyes; about 75 narrow c1avodentatesetae, 4 at anterior and 7-9 at posteriormargin. Tergites 1-10 and sternites 4-10 divided;cuticle thin and surfaces slightly granulate tosmooth; dorsal setae narrow c1avodentate, ventralsetae acuminate to multidenticulate. Tergal chaetotaxyof holotype male 10: 10:9: 10: 10: 12: 11: 12: 12:12: 10:2, others generally similar; tergite 11 withoutacuminate tactile setae. Sternal chaetotaxy of holotypemale 20:[2-2]:(3)15(3):(1)8(1): 13: 12: 13:11: 12:9:2T2T2:2, other males similar; the 2 acuminatetactile setae of sternite 11 are near the middle.Anterior sternal chaetotaxy of allotype female17:(3)11(3):(1)6(1):11:12:-, others similar. Internalgenitalia of male typical, that of holotype 0.45as long as carapace. Spermathecae of female arelong, thin tubules with expanded, saclike ends.Chelicera with 5 setae on hand, sbs denticulate,others acuminate; flagellum of 4 setae; galea ratherslender, with 4-6 small rami.26Figs. 25-27.-Dinocheirus cavicolus, new species, holotype male: 25, right palp, dorsal view; 26, left chela, lateral view (darkenedareoles are underneath); 27, leg IV, lateral view.149