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one pair dorsolateral, and one pair lateral setae;tergite IX with one pair dorsolateral and one pairlateral setae. Stemites V-IX with two distinctsubmarginal rows of setae. Stemite VI about 3.8times wider than long; width/length ratio versusbody length, 1.6. Segments X-XI telescoped;segment X with six ventral and ventrolateral setae;segment XI with seven ventral and ventrolateralsetae; segment XII with two dorsal, twodorsolateral, and 10 ventral setae. Flagellum (Figs.10-11, 66) 0.56 mm long; with complete set ofsetae; segments/articles I and IV present.Fig. 71.-Protoschizomus gertschi: a, female spermathecallobe; b-c, details of lobe microtubules; d, detail of microtubulebase.Spermathecae (Figs. 69-71) of one pair lobes, withslender stalks and rounded enlarged apical bulbs.Pedipalps (Fig. 67): Trochanter not produceddistally. Femur with six or seven strong spinosesetae decreasing in size distally. Patella with fourstrong spinose setae along ventrolateral margin andthree or four long pilose strong spinose setae onmesal margin. Tibia with four strong spinose setaeand two long setae along ventrolateral margin. Spurabout 0.5, claw about 0.9 dorsal length ofbasitarsus-tarsus.Chelicerae: Serrula with nine teeth. Setae: 1=3;2=4; 3= 11; 4=2; 5=0; 6= 1. All denticlesrounded and many setae broken, suggesting this isan older adult.Legs: Leg I, including coxa, about 7.90 mmlong; basitarsal-tarsal segment proportions:14-3-5-5-4-4-17. Femur IV (Fig. 68) about 4.2times as long as deep.Male unknown.Immature paratype: As in holotype except thereis a pair of dorsolateral setae slightly anterior tomiddle of the propeltidium; dorsolateral seta onright side of abdominal tergite IV missing; only onepair of dorsal setae on tergite V; and only one pairof dorsal and one pair lateral setae on tergite VIII.Measurements (mm).-Female holotype:Pedipalp: trochanter 0.44; femur 1.80; patella 0.80;tibia 0.74; basitarsus-tarsus 0.38; total 4.16. Leg I:trochanter 0.50; femur 1.88; patella 1.92; tibia1.56; basitarsus 0.38; tarsus 1.02; total 7.26. LegII: trochanter 0.36; femur 1.52; patella 0.88; tibia0.94; basitarsus 0.74; tarsus 0.68; total 5.12. LegIII: trochanter 0.44; femur 1.50; patella 0.78; tibia0.86; basitarsus 0.92; tarsus 0.68; total 5.18. LegIV: trochanter O. 84; femur 1.78; patella O. 86; tibia1.38; basitarsus 1.16; tarsus 0.82; total 6.84.Habitat.-Sotano de Riachuelo is a 60 m deepcave which receives some floodwater (Mothes,1982). The cave is also home to two remarkabletroglobitic carabid beetles, Miquihuana rhadiniformisBarr and Paratrechus laticeps Barr.Comments.-This species, although smaller andless-attenuated than A. lucifer, A. stygius, and A.huitzmolotitlensis, is probably restricted to cave life.The absence of the left anterior seta on thepropeltidium is probably an abnormal condition,since this seta is present in the paratype.Protoschizomus treacyae new speciesFigs. 2-3, 14-15, 78-81Material examined.-MEXICO: Tamaulipas:Cueva del Borrego, 0.5 km S of Conrado Castillo,60