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fig. 2 (part-51.5 mi. (82.9 km) E CiudadVictoria on highway 70 record only); Rowland,1975a: 27, 40-42, 46-59, 167-168, 211, 213,map 3, fig. 15 (part-51.5 mi. (82.9 km) ECiudad Victoria on highway 70 record only);Rowland and Reddell, 1979a:162, 167-169, 174,figs. 2,7 (part-51.5 mi. (82.9 km) E CiudadVictoria on highway 70 record only).Material examined.-MEXICO: San LuisPotosi: 51.5 mi. (82.9 km) E of Ciudad Valles onHighway 70, 17 Oct. 1972 (B. Firstman, V. Roth),male holotype, female paratype (AMNH).Etymology.- This species is named for J. MarkRowland in recognition of his many contributions tothe study of schizomids.Diagnosis.-This species is distinguished fromP. pachypalpus by the shape of the male flagellum,which is more slender and has a less distinct stalkthan in P. rowlandi. There are four pairs of setae onthe propeltidium in P. rowlandi versus three pairs inP. pachypalpus.Description.-Male holotype (length from distaledge of propeltidium to base of flagellum, 4.64mm); dark orangish red (probably artificiallydarkened due to preservation and storage).Cephalothorax: Propeltidium 1.16 mm long, 0.70mm wide; with row of two setae on anterior processand one off-centered pair setae at base of process;with one pair small widely spaced setae about 1/5from distal edge, two pairs (second pair tiny) setae2/5 from distal edge, and one pair closely spacedsetae about 1/4 from posterior margin. Gap betweenmesopeltidial plates 0.4 anterior width of one plate.Metapeltidium distinctly separated by membranoussuture. Anterior sternum with 10 setae, plus twosternapophysial setae; posterior sternum with foursetae.464851, -!========Figs. 46-51.-Proloschizomus rowlandi: 46, male flagellum, dorsal aspect; 47, male flagellum, lateral aspect; 48, male flagellum,ventral aspect; 49, male pedipalp, lateral aspect; 50, female flagellum, lateral aspect; 51, female spermathecae. Scale lines = 0.25 mmfor Figs. 46-49, 0.1 mm for Figs. 50-51.52