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than S; SA with laterobasal carina (except in T. welbourniand bilobata) and tooth (except in T.hardeni); apical portion of S tubular or compressed.Range.-Known from southern New Mexico tocentral Texas (Maps 2-4).The longistyla InfragroupDiagnosis.-Males of this infragroup are distinguishedfrom other Texella by the following combinationof characters: TC = 3-5-5-5; PTb with 2mesal megaspines; S compressed; SA prongs welldeveloped, parallel sided, blunt (Figs. 77-84).Range.-Known from southern New Mexico andadjacent Texas (Maps 2-4).Texella longistyla, new speciesFigs. 77-79.Diagnosis.-Males of this species are distinguishedfrom other Texella by the following combinationof characters: PTb with two mesal megaspines;S long, compressed; SA with lateral carinaand laterobasal prongs (Figs. 77-79).Type.-Male holotype from Musk Ox Cave,Carlsbad Caverns National Park, Eddy County,New Mexico (7 Aug. 1976; W. Weibourn), depositedin CAS.Etymology.-The specific name refers to thelong stylus characteristic of this species.Description.-(cavernicole)-Total body length,1.51-1.59. Scute length, 1.05-1.08. Leg II length,3.64-3.92. Leg II/Scute length, 3.47-3.63. (N =4) (epigean)-Total body length, 1.67. Scutelength, 1.05. Leg II length, 2.95. Leg II1Scutelength, 2.81. (N = 1).Color yellowish white (yellowish orange in epigeanspecimen). Body coarsely rugose; tuberclesmoderate on eye mound (dense in epigean specimen),sparse on pars thoracica, moderate on tergitemargins and coxae. Carapace with 2 or 3 pairs ofAT. Eye mound broadly conical, eyes well developed.Palpal megaspines: trochanter, 1 ventral;femur, 1 mesoapical; patella, 2 mesal; tibia, 2 mesal.Tarsal count: 3-5-5-5.Male (holotype): Total body length, 1.59. Scutelength, 1.10; width, 1.08. Eye mound length, 0.28;width, 0.29. Leg II length, 3.82. TrIV spurlength, 0.36. POP length, 0.10.Penis (Figs. 77-79): VPP with 2 dorsal, 11lateral, and 4 ventral setae; AS stout, pointed,geniculate. Glans: BK triangular, narrow; MLrectangular, wide; PSL quadrate, folded. S long,compressed; BF present; SA with basolateral prong(long, rounded apically) and mediolateral canna(evenly rounded).Female (paratype, Doc Brito Cave): Total bodylength, 1.51. Scute length, 1.08; width, 1.10. Eyemound length, 0.26; width, 0.31. Leg II length,3.92. TrIV with one ventral tubercle.Ovipositor: cuticle intricately folded, surface apparentlysmooth; 1 pair of apical teeth present; setalpattern: 2 pairs dorsal, 4 lateral, 1 ventral.Variation.-The paratype male from Musk OxCave, although subequal in size to the holotype, haslonger TriV spurs (0.49) and POP (0.18).Natural History.-The specimen from Texaswas collected beneath a large decaying prickly pearcactus, under conditions of high moisture, in anoak-juniper forest adjacent to a mesic riparian woodland.Other Material Examined (Paratypes).- UNIT­ED STATES: Texas: Culberson Co.: GuadalupeMountains National Park, McKittrick Canyon, 7Sep. 1989 (D. Ubick, CDU), 1 male. New Mexico:Eddy Co.: Carlsbad Caverns National Park, MuskOx Cave, 5200', 27 Mar. 1976 (W. Welbourn,TMM), 1 male, 1 female; Doc Brito Cave, 3500',25 May 1975 (W. Welbourn, MLG), 1 female.Distribution.-Known only from CulbersonCounty, Texas, and Eddy County, New Mexico(Maps 2-4).Texella welbourni, new speciesFigs. 80-84.Diagnosis.-The single male representing thisspecies is distinguished from other Texella by thefollowing combination of characters: eyes absent(lacking both retina and cornea); TC = 3-5-5-5; SAwith a pair of long laterobasal prongs, lackingcarina; S long, compressed (Figs. 80-84).Type.-Male holotype from Jurnigan Cave(3500'), Eddy County, New Mexico (16 Feb. 1974;W. Welbourn), deposited in CAS.Etymology.-The specific name is a patronym inhonor of Mr W. Calvin Welbourn, collector of thisand other species of Texella.Description.-Male (holotype): Total bodylength, 1.69. Scute length, 1.23; width, 1.10. Eyemound length, 0.31; width, 0.31. Leg II length,5.62. Leg II1Scute length, 4.57. TrIV spur length,0.08. POP length, 0.05.Color yellowish white. Body moderately rugose;tubercles sparse on eye mound, pars thoracica,tergite margins, and coxae. Carapace with 5 pairsof AT. Eye mound broadly conical, eyes absent(lacking retina and cornea). Palpal megaspines:195