/ , ^^ VS^ 1^ -0^4,0 3 To Vol. 41, pp. 175-188 // October 15, 1928 ^ PROCEEDiNdi* i MAR 8 1954 : OF THE \\ (j^ . , BIOLOGICAL SOCIETY OF WA^^ NOTES ON SPIDERS FROM SOUTHEASTERN UTAH. BY R. V. CHAMBERLIN AND W. J. GERTSCH. This is a report primarily upon a collection of spiders se-cured by members of a field party from the Department of Zoology of the University of Utah during ten days of April, 1928. While the major part of the arachnids were taken by the authors, who gave special attention to them, other members of the party from time to time added specimens secured inci-dentally to their own particular work, as credited hereafter under locality records for the various species. The zoologi-cally little known San Juan County was the chief field of the expedition, but on the return journey the San Rafael Desert region of Emery County received attention and collections were also made at several points in Wayne County. Types are in the collection of R. V. Chamberlin. DICTYNIDAE. Amaurobius americanus (Emerton). Localities. — San Juan Co.: Monticello, Verdure and Bluff; Grand Co.: Moab; Emery Co.: Mounds and San Rafael River; Wayne Co.: Fruita. Dictyna completa Chamberlin. Locality. — Grand Co.: Moab. One female taken by A. M. Woodbury, April 15. Dictyna uintana Chamberlin. Locality. — San Juan Co.: Bluff. A male taken by Mr. Gertsch, April 16, is referred with a little doubt to this species. It was known previ-ously from the Uintah Mts. Dictyna eutypa Chamberlin. Locality. — San Juan Co. : Bluff. A female was secured by J. R. Cham-berlin. 43— Proc. Biol. Soc. Wash., Vol. 41, 1928. (175)