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Reddell and W. Russell); I female from MurphyWells Cave, Irion County, Texas, 24 February 1974(R. Ballinger); 3 males from dark zone of WindCave (upper level), Eddy County, New Mexico, 31December 1973 (W.C. Welbourn); 1 female fromHelen's Cave, Carlsbad Caverns National Park,Eddy County, New Mexico, 31 August 1974 (W.e.Welbourn); 1 female near bat guano in EndlessCave, Eddy County, New Mexico, 17 February1975 (W.C. Welbourn); 3 males, 1 female fromThree Fingers Cave, Lincoln National Forest, EddyCounty, New Mexico, 28 May 1978 (W.C. Welbourn);1 female in "twilight zone near porcupinelair," Serpentine Root Cave, NW Tinnie, LincolnCounty, New Mexico, 27 July 1973 (W.C. Welbourn).All are mounted on slides (FSCA).Hesperochernes molestus HoffHesperochernes molestus Hoff, 1956c:33, figs.12-15; Hoff, 1958:24; Hoff, 1959:32.?Hesperochernes sp.: Reddell, 1970:403.This species has been known previously onlyfrom central New Mexico; found in close associationwith rodents, in nests of Neotoma sp., Dipodomyssp., and Perognathus flavus Baird, and onthe hair of Onychomys leucogaster (Wied-Neuwied)(Hoff, 1956c:38).At hand is one collection of 26 specimens (21males, 4 females, 1 deutonymph) which appear tobelong to this species. They were taken from "batguano in the Bat Room," Four Mile Cave, 4 milesN Del Rio, Val Verde County, Texas, 24 April1966 (1. Reddell and E. Alexander); 10 adults (6males, 4 females) mounted on slides (FSCA). Theytend to be a little larger on average than the typesreported by Hoff from New Mexico, but in generalshape and proportions they are much the same.A single conspecific female was found "attachedto the right rear leg of a cranefly" at College Station,Brazos County, Texas, II March 1985 (S.W.Taber). This sort of phoretic association may assist,at least in part, in the spread of the species fromplace to place.Hesperochernes unicolor (Banks)Chelanops unicolor Banks, 1908:39.Hesperochernes unicolor (Banks): Hoff, 1947:5II;Hoff and Clawson, 1952:23.A single female referable to this species wasfound in Ezell's Cave, Hays County, Texas, 15August 1978 (J.e. Davis); mounted on slide(FSCA). It is a little larger than 3 femalespreviously reported by Hoff (1947) and Hoff andClawson (1952), but otherwise fits the description ofthe species very well. It was obviously accidental inthe cave, not at all modified for cave life.Genus Dinocheirus ChamberlinDinocheirus Chamberlin, 1929b: 171; Muchmore,1974:31.Dinocheirus, as presently (imperfectly) understood,is widely distributed in Europe and North andCentral America. Five species have been reportedpreviously from New Mexico and 2 from Texas(Hoff, 1958). Representatives are usually found inrich forest litter or in the nests of small mammals;one species has been reported from bat guano inCarlsbad Caverns.Dinocheirus astutus HoffDinocheirus astutus Hoff, 1956c:44, figs. 18-20;Hoff, 1958:28; Hoff, 1959:27, 33; Barr andReddell, 1967:259.Dinocheirus astutus was described by Hoff(1956c) from specimens taken mainly from nests ofNeotoma sp. in west-central New Mexico. It wassubsequently reported (del. Hoff) from the BatCave, Carlsbad Caverns, in southeastern New Mexico(Barr and Reddell, 1967). More recent collectionshave provided many more specimens fromCarlsbad Caverns and a single female from EllisCave in west-central New Mexico.Nine males and 10 females from the recent collectionshave been mounted and studied. In mostparticulars they agree closely with Hoff's descriptions.However, both males and females tend to be alittle larger and have slightly more slender appendagesthan Hoff's. These differences may be an artifactof different techniques of measurement or mayindicate some small adaptations of the cavernicolousforms.New records.-NEW MEXICO: Eddy County:Carlsbad Caverns National Park, Bat Cave, berlesesample of guano of Tadarida brasiliensis, 25-27November 1967 (T. Rossen), about 150 specimens,all stages; berlese samples, 14 February 1974, 27June 1974, 28 November 1974, 26-27 April 1975(W.C. WeIbourn), about 150 specimens, all stages.147