482 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 50. 



Illinois. — Urbana, March 30, April 12, 30, May 2, 7, abundant in 

 woodlands, in humus, and on agarics. 



Minnesota. — April 8, J, E. Guthrie (Univ. of Minn.). 



The cotypes are in the collection of the University of Minnesota. 



ACHORUTES BREVISPINUS Harvey. 

 Plate 9, figs. 22-28. 

 Achorutes brcvispinus Harvey, 1893. 



Cream yellow above, with pale purple patches and streaks; dorsum 

 with several interrupted stripes. Eye patches reniform. Eyes eight 

 on each side. Postantennal organs (figs. 22, 23) large, with four or 

 five peripheral tubercles. Antennae subequal to head in length; seg- 

 ments as 4:5:6:8 in relative lengths; second and third segments 

 slightly expanding; fourth ovate. Body subfusiform. Ungues (fig. 

 24) slender, curving, unidentate two-fifths from the apex. Ungui- 

 culus long, extending beyond the middle of the unguis, slender, grad- 

 ually tapering from base to apex. One clavate tenent hair. Manu- 

 brium as long as the remainder of the furcula. Dentes slender, taper- 

 ing. Mucro (figs. 25, 26) almost one-half as long as dens, lamellate, 

 with a blunt apical hook and a subapical dorsal excavation. Anal 

 spines (fig. 27) two-fifths as long as hind ungues, slender, feebly 

 curving, on small, slightly separated papillae. Clothing (fig. 28) of 

 sparse short curving denticulate setae, with a few longer setae on 

 the posterior part of the abdomen. Maximum length, 2.5 mm. 



Redescribed from Harvey's cotypes. 



This species was found to be exceedingly abundant during the 

 winter in celery, stored in a cellar; it was also noticed out-of-doors 

 in autumn in potato hills. 



Orono, Maine, February, March, April 22, November, December, 

 F. L. Harvey. 



ACHORUTES PACKARDI Folsom. 

 Plate 9, figs. 29-33. 



Achorutes nivicola Packard, 1873. — Lintner, 1885. — MacGillivray, 1891. — 



• Harvey, 1893. 

 Schoturus nivicola Lintner, 1896. 

 Achorutes packardi Folsom, 1902a. 



Dark indigo blue throughout. Eyes eight on each side. Post- 

 antennal organs (fig. 29) with four peripheral tubercles. Antennae 

 shorter than the head, with segments as 5:8:7:10. Ungues (fig. 30) 

 stout, untoothcd. Unguiculi of hind feet two-fifths as long as the 

 ungues, slender, with apical half acuminate; of the other feet, one- 

 fourth as long as the ungues and small. Tenent hair stout, exceed- 

 ing the unguis in length. Dens (fig. 31) without dorsal teeth. Mucro 

 (fig. 31) one-fifth as long as dens, in form like the end of a canoe, 

 with apex often upturned. Anal spines (fig. 32) two, almost as long 



