THE CANADIAN ENTOMOLOGIST. 415 



hind knee-plate larger; hair of hind tibiae whiter and less 

 spreading; first two abdominal segments very distinctly punc- 

 tured; subhyaline margins of segments less than half as wide. 

 Clypeus, labrum and large spot on mandibles yellow; hair of 

 thorax above wholly pale ochraceous; flagellum entirely red, 

 bright beneath, a little dusky above; small joints of tarsi red; 

 hair on fifth and sixth abnominal segments light; wings as clear 

 as in aurigenia. The abdomen is without hair-bands. Tegulae 

 light fulvous. Eyes dark brown. 



Hab. — Paris, Texas, at Helianthiis, Aug. 27, 1905 (F. C. 

 Bishopp), U. S. National Museum. The M. aurigenia compared is 

 a cotype from New York. 



Xenoglossodes helianthorum sp. n. 



cf. Length about 10 mm.; black, with abundant pure 

 white hair, light orange on inner side of basitarsi; head broad; 

 eyes greyish-brown; clypeus (except upper third), labrum and 

 basal half of mandibles cream-colour; apical half of mandibles 

 ferruginous; head and thorax with dense long hair; antennae 

 reaching the second abdominal segment; third and fourth joints 

 (from front) measuring respectively about 160 and 1120 p\ 

 flagellum dark rufofuscous, redder beneath, but not brightly 

 coloured; mesothorax shining, well punctured; tegulae almost 

 wholly hidden by hair, their margins pallid; wings short, hyaline, 

 with ferruginous nervures and stigma; second s. m. very large 

 and broad; small joints of tarsi ferruginous; abdomen entirely 

 covered with white hair, long at base, otherwise short, denser on 

 apical margins of segments, producing obscure bands; subapical 

 lateral spines very small ; short fuscous hair on each side of 

 apical part of apical plate; last ventral segment with two large 

 oval depressions. 



Hab. — Falfurrias, Texas, at Helianthiis, May 18, 1907 {A. C. 

 Morgan). U. S. National Museum. I have not ventured to 

 extract the mouth-parts of the unique type, but refer the insect 

 with confidence to Xenoglossodes, where it- falls near X. albata 

 (Cress.), differing by being larger and more robust, with upper 

 part of clypeus black. 



