The Graspedosomatidde of North America. 83 



Uiider^voodia iuloides (Harger). 



Trichopetalnm iuloidesYL&T^er: A.Vi\. Journ. Sci. and Arts, IV, 118 (1872); 



Kyder: Proc. U. S. Nat. Mus. Ill, 527 1881; Packard: Proc. Am. 



Philos. Soc. XXI, 192 (1883). 

 Chordeuma iuloides (Harger) Bollman: Bull. 46 U. S. Nat. Mus. 121 (1893). 



Plate X, figures 177-179. 



Eyes more or less triangular, of about 13 ocelli, without evident arrange- 

 ment into rows. 



Antennae moderately clavate .75 to .85 mm. long, fifth joint thickest, .10 to 

 .12 mm. in diameter ; ratio of lengths of joints, beginning with the seventh, 

 3: 4.5: 8-10: 5.5: 10: 5: 3. Olfactory cones very slender and sharp-pointed. 



First segment smooth, nearly semi-circular in front, straight behind, except 

 a slight emargination in the middle; with a very fine raised margin anteriorly 

 to the lateral angles. Median furrow indistinct. Three fine, hair-like setae 

 on each side, one close to the lateral angle, one a short distance from the me- 

 dian line and one midway between. 



Subsequent segments nearly smooth, a very fine dorsal line, the first five or 

 six segments with a slight trace of lateral carinse, the others smooth, as in 

 lulidse. Each segment has three small bristles on each side, situated as on 

 the first segment. On posterior segments the bristles become larger, have a 

 prominent base, and are closer to the posterior margin of the segment. The 

 ventral edges of anterior segments, at least, are sharply and finely serrate. 



Anal segment smooth, as viewed from above having a semi-circular outline, 

 posteriorly truncate. From the posterior margin of the truncation, near the 

 middle, come two long conic papillae, each tipped with a very slender fiexuous 

 hair. At each corner of the truncation, a little removed from the margin is a 

 slender bristle directed backward; another posteriorly-directed slender bristle 

 some distance below, near the sinuation. The other two dorsal bristles are 

 near the median line, some distance behind the middle of the segment, and 

 each located in a depression. 



Color light horn-brown, mottled with white, many specimens show very lit- 

 tle brown and are dirty white in color, especially in alcohol. The body is so 

 transparent that the contents of the alimentary canal freqiiently give the ap- 

 pearance of a dark dorsal stripe. 



Length 6.5-8 mm. ; width .6 mm. 



Habitat: North Eastern North America. Hai'ger's type 

 was from Simmons' Harbor, north shore of Lake Superior. We 

 have collected specimens at Orillia, Ontario ; abundant on Chief 

 Island, Lake Couchichin^; Grass Lake, near Jackson, Michigan ; 

 and at several localities in central New York ; Syracuse, Kirk- 

 ville, Marcellus. A careful search is likely to be successful in 

 any wooded locality which is so situated as to soil and drainage 

 as to be always moist, without being submerged. Individuals are 



