80 Journal Xew York Entomological Society. [Vol. xix. 



Gen. CHTHONIUS. 

 Chthonius longipalpus Banks. Can. Ent., XXIII, p. 164. 



1. Ithaca, New York. Several specimens from under stones. Collected 



by the writer during the fall of 1910. 



2. Woods Holl, Mass. Three specimens. Collected by J. E. Guthrie. 



3. District of Columbia. One specimen, no situation given. Cornell 



University Collection, lot 241. 



Chthonius pennsylvanicus Hagen. Rec. Amer. Ent., 1868, p. 52. 



1. Minneapolis. Minn. One specimen from under damp bark on river 



bluffs. Collected by J. E. Guthrie. Ajir. 24. iqoo. 



2. Hillery, Illinois. One specimen from moss. Collected by C. A. Hart 



and J. Zetek, March 4, 1908. 



Chthonius moestus Banks. Can. Ent., XXIII, p. 165. 



I. Columbia, Missouri. Several specimens. Collected by C. R. Crosby 

 during the month of March. Cornell University Collection. 



Explanation of Plates. 



Plate I. 



Fig. I. Chelifer cancroides Linn. Dorsal view of female, X 26. This 

 figure represents an individual about midway between the extremes of variation. 



Plate II. 



Fig. 2. Chelifer cancroides Linn. Dorsal view of chelicera, pedipalps, 

 and the anterior part of abdomen of male, X26. This figure was drawn from 

 a specimen collected at Ames, la. It should have the varietal name of nigri- 

 palpus n. var. 



Fig. 3. Chelifer cancroides Linn. Dorsal view of the chelicera, pedipalp, 

 and the anterior part of the abdomen of male, X 26. Figure made from speci- 

 mens collected under a stable floor at Otto, N. Y. It should have the varietal 

 name of dentatus n. var. 



Fig. 4. Chelifer cancroides Linn. Dorsal view of the chelicera, pedipalp, 

 and the anterior part of the abdomen of male, X 26. Individuals with the 

 characters shown in this drawing have gone under the specific name of C. 

 scabriculus Simon, but they should be considered only as constituting a variety 

 of C. cancroides Linn. 



Fig. 5. Chelifer cancroides Linn. Movable digit of chelicera, from above, 

 X 260. 



Fig. 6. Chelifer cancroides Linn. Posterior part of cephalothorax and 

 anterior part of abdomen of male, X 26. Drawn from a bark specimen from 

 Xenia. O. 



Fig. 7. Same as Fig. 6 except the specimen from which the drawing was 

 made was taken from under bark at Havana. 111. 



