&</,0 C 73 Vol. 77, pp. 175-182 30 October 1964 PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON NEW NORTH AND CENTRAL AMERICAN RECORDS OF ORTHOPORUS ( Diplopoda : Spirostreptida ) By Nell B. Causey Louisiana State University, Baton Rouge, Louisiana Most of the specimens upon which this paper is based are in my personal collection. The exceptions are noted. I am grateful to the many collectors. Collections for which no collectors are mentioned were made with the assistance of Dr. David Causey. Orthoporus boreus Chamberlin Orthoporus boreus Chamberlin, 1947, Proc. Acad. Nat. Sci. Philadelphia, 99: 55, 57, fig. 69 (Tabor, Snake River Desert, Bingham Co., Idaho. $ holotype belongs to the Acad. Nat. Sci. Philadelphia, but is not there; presumably it is in the Chamberlin Coll. ) . A curatorial error is suspected in the type locality of this species. I have corresponded with several biologists who have done field work in Bingham County, Idaho, and none can recall having seen large-bodied millipeds there. Bingham, Socorro County, New Mexico, should be investigated as the possible type locality. Orthoporus dybasi ( Chamberlin ) , new combination Scaphiostreptus dybasi Chamberlin, 1952, Great Basin Nat., 12 ( 1-4 ) : 28-29, fig. 16 (El Fortin, Veracruz. $ holotype, Chamberlin Coll.). Width 5.4 to 7.2 mm. 63 to 67 segments. Annulated with two shades of red-brown; legs are red. Curvature of ectal spine of telocoxite varies; in my specimen from El Fortin, it curves strongly, as in texicolens; in the Conejos specimen, the curvature is weaker. All other details of the gonopods from the two sites are identical. Telopodites are in the normal position for the genus, not crossed as in the holotype. Resembles teapensis in the general appearance of the gonopods; differs in the stronger sternum and in the presence of a lobe on the telopodite. Distribution: East-central Mexico. New records: Veracruz — Veracruz-Jalapa highway, near Cunejos, $ , 19— Proc. Biol. Soc. Wash., Vol. 77, 1964 ( 175) institution OCT 3 1964
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