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Missouri may be conspecific (unpublished); it issmaller and more robust than the new species.Cheiridium reyesi is apparently more closely relatedto the midwestern forms and may be somewhatmodified for cavernicolous existence.It is interesting to note that the articulations betweenfemoral segments are distinctly visible in alllegs. This is at variance with the condition in manyspecies of Cheiridium and related genera, where thefemora appear completely fused, with no visible suturebetween basifemur and telofemur.Genus Apocheiridium ChamberlinApocheiridium Chamberlin, 1924:34; Benedict,1978:231.Seven species of Apocheiridium have been knownfrom across the United States. As representatives areusually found under the bark of living trees, it issurprising that a new form from Texas IScavernicolous.Apocheiridium reddelli, new speciesFigs. 16-18Apocheiridium sp.: Reddell, 1970:402.Type-data.-Holotype male (WM900.01001)from Devil's Sinkhole, near Rocksprings, EdwardsCounty, Texas, 14 March 1966 (J. Reddell);mounted on slide (FSCA).Diagnosis.-Similar to A. stanndardi Hoff(1952) in general shape, but a little smaller (palpalchela 0.33 rom long), with surfaces much lessgranulate, and with chelal fingers shorter than hand.Description of male (female unknown).-Withthe general characters of the genus (see Benedict,1978). Carapace and tergites not granulate, but distinctlyreticulate; setae small, acuminate. Carapacewith shallow, median transverse furrow; 2prominent corneate eyes; 4 setae at anterior and 12at posterior margin. Abdomen ovate, 11 segmentsvisible from above; tergites 1-9 divided; tergalchaetotaxy 15:16: 15:16:21:21:19:19:-; sternal1518Figs. 14-18.-14-15, Cheiridium reyesi, new species, ho!otype female: 14, left palp, dorsal view; IS, right chela, dorsolateral view(darkened areoles are underneath); 16-18, Apocheiridium reddelli, new species, ho(otype male: 16, right palp, dorsal view; 17, leg I,139