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Abdomen: Tergite I with two pairs anteriormicrosetae (in row) and one pair large posteriorsetae; tergite II with three pairs anterior microsetae(in row) and one pair large posterior setae; tergitesIII-VII with one (?) pair dorsal and one (?) pairdorsolateral setae; tergite VIII with two rows of foursetae; tergite IX with one pair dorsolateral and onepair lateral setae. Stemites V-IX with scatteredsetae. Stemite VI about 3.1 times as wide as long;width/length ratio versus body length, 1.5.Segments X-XI telescoped; segments X-XI with onepair dorsolateral, one pair ventrolateral, and onepair ventral setae each; segment XII with one pairdorsal, one pair dorsolateral, one pair lateral, andten (?) ventral setae. Flagellum (Figs. 24-25, 46-48)0.56 mm long, 0.28 mm wide; with graduallywidening stalk ending in prominent bulb; dorsalsurface extending over pair of unsclerotizedventrolateral lobes; setae dm2 and vm4 missing; viisetae are on the inner face of the ventral lobes;unnumbered unpaired setae present laterad to dm4.Pedipalps (Fig. 49): Trochanter not produceddistally. Patella with two ventrolateral spinose setae,distalmost very long. Tibia with four strongventrolateral spinose setae. Spur about 0.3, clawabout 0.7 dorsal length of basitarsus-tarsus.Chelicerae: Serrula with eight teeth, increasing inlength basally. Setae: 1=3; 2=2; 3= 11; 4=2;5=0; 6= 1.Legs: Leg I, including coxa, 4.70 mm long;basitarsal-tarsal proportions: II:3:4:3:3:4: 14.Femur IV about 3.25 times as long as deep.Female paratype (length from distal edge ofpropeltidium to base of flagellum, 4.20 mm); lighttan. Propeltidium 1.06 mm long, 0.58 mm wide.Gap between mesopeltidial plates 0.5 anterior widthof one plate. Tergites as in male except: tergitesIII-VI with one pair dorsal and one pair dorsolateralsetae each; tergite VII with one pair dorsal, one pairdorsolateral, and one pair lateral setae; tergite VIIIwith one pair dorsal, one pair dorsolateral, and onepair lateral setae near posterior margin and two pairsdorsolateral setae near anterior margin. StemitesV-IX with two distinct submarginal rows of setae.Stemite VI about 3.1 times as wide as long;width/length ratio versus body length, 1.4.Flagellum (Figs. 6-7, 50) 0.46 mm long; dm2 setamIssmg; segments/articles I, III-V present.Spermathecae (Fig. 51) of one pair of elongate,curved lobes only slightly increasing in sizeapically. Pedipalp length in proportion to bodylength about 0.7 length of male pedipalp; claw about0.8 dorsal length of basitarsus-tarsus. Leg I,including coxa, 3.96 mm long; basitarsal-tarsalproportions: 9:2:3:3:3:3: 12. Femur IV about 3.0times as long as deep.Measurements (mm).-Male holotype (female):Pedipalp: trochanter 0.14 (0.14); femur 0.74 (0.54);patella 0.86 (0.44); tibia 0.70 (0.44); basitarsustarsus0.32 (0.22); total 2.76 (1.78). Leg I:trochanter 0.32 (0.26); femur 1.02 (0.86); patella1.06 (0.90); tibia 0.94 (0.78); basitarsus 0.26(0.22); tarsus 0.66 (0.54); total 4.26 (3.56). Leg II:trochanter 0.14 (0.16); femur 0.80 (0.72); patella0.48 (0.44); tibia 0.46 (0.44); basitarsus 0.36(0.32); tarsus 0.36 (0.38); total 2.60 (2.46). LegIII: trochanter 0.24 (0.20); femur 0.76 (0.70);patella 0.40 (0.34); tibia 0.40 (0.32); basitarsus0.46 (0.40); tarsus 0.42 (0.40); total 2.68 (2.36).Leg IV: trochanter 0.56 (0.48); femur 1.04 (0.92);patella 0.56 (0.48); tibia 0.74 (0.64); basitarsus0.68 (0.56); tarsus 0.48 (0.44); total 4.06 (3.52).Comments.-Previous reports of this specieshave been given as "E Ciudad Victoria," but thecorrect locality is "E Ciudad Valles."Protoschizomus occidentalis RowlandFigs. 2-3, 26-27, 52-58Protoschizomus occidentalis Rowland, 1975b:3-6,fig. 1; Rowland, 1975a:27, 41-43, 46-59,167-168, map 3, fig. 14; Rowland and Reddell,1979a:162, 167-169, 174, figs. I, 7; Reddell,1981: 124.Material examined.-MEXICO: Colima: 20.9km SW Colima, 16 July 1972 (A. Jung), maleholotype, female paratype (AMNH).Diagnosis.-This species has a wider basal stalkin the male flagellum than its closest relatives, P.pachypaLpus and P. rowLandi. Females may beseparated by the shorter spermathecal lobes in P.occidentaLis than in P. pachypaLpus. Males may alsobe distinguished from both P. pachypaLpus and P.rowlandi by retaining seta vm4, which is lost inboth of those species.Description.- Male holotype (length from distaledge of propeltidium to base of flagellum, 4.00mm); light orangish tan.Cephalothorax: Propeltidium 1.04 mm long, 0.64mm wide; with row of two setae on anterior processand one pair setae at base of process; with one pairof widely spaced dorsal setae about 2/5 from distaledge and one pair closely spaced setae about 1/4from posterior margin; third pairs of tiny setaeslightly posterior to larger anterior pair. Gapbetween mesopeltidial plates 0.5 anterior width ofone plate. Metapeltidium divided by narrow suture.53