The Iowa Insect Survey has, for more than ten years, been studying the seasonal and geographic distribution of Iowa insects. The records are card indexed and come from various sources, chief of which is the survey collection made up by frequent collecting trips covering the entire state. In this way at least some preliminary work has been done in each of the 99 counties of Iowa. Many of these counties have been rather thoroughly worked for special groups.

Recently in checking material in the genus Laphrin apparently two species were found under the name uvltur Osten Sacken. Marston Bates kindly examined the types of uvltur in the Museum of Comparative Zoology and, on verifying my observations, sent part of their material for study. Two of Osten Sacken's specimens ( ♂ ♀ ) are uvltur and the third speciimen is herein described as new, and notes on several other closely related species are given.

This group includes, besides semivittatus Say, trivittatus Lec., and the recently described castanicolor Fall, two species which have been confused with semivittatus and two others which have been identified as fuscu1us Lec. The species agree well among themselves in body form, type of sculpture, and type of aedfagus, and differ from each other mainly in characters of the antennae and vestiture and in color.

Female.—Length 7 mm. Head thick antero-posteriorly, the temples scarcely narrowed behind, distinctly broader than eyes viewed dorsally; vertex evenly convex; ocelli small ; ocellocular space fully three times diameter of lateral ocellus; malar space scarcely half basal width of mandible; face distinctly elevated above level of eye-margins, feebly shining with well separated fine punctures, the interspaces finely reticulately sculptured; antennae 23 segmented, first flagellar segment very nearly equal to second and third combined; thorax shining; propleura polished almost without punctures ; mesoscutum with only sparse punctures bearing vestiture ; mesopleura sparsely punctate above and polished impunctate behind, anteriorly and ventrally the punctures becoming more dense toward a patch of very fine dense punctures adjacent epicneimia; metapleura with larger shallow punctures which are somewhat confused by weak rugulae below; propodeum rather elongate, shining, impunctate, dorsally finely and faintly reticulate, median parallel longitudinal carinae very weak, lateral longitudinal carina distinct only on posterior half, apical transverse carina defined laterally but scarcely visible at middle; lateral face of propodeuin a little roughened; nervulus slightly postfurcal, nervellus broken about at middle.