404 J. H. Emcrton, 



dark brown area, widest behind and nearly square, with rounded 

 corners, behind which the receptacles show indistinctly through the 

 skin. Fig. \ h. Smaller and apparentl}^ younger females have the 

 epigynum more distinct without the opaque brown area. Fig. 1 c. 

 The male palpi are large and of characteristic form. Figs. Id, 1 e. 

 The femur has a knob-shaped process on the middle of the under 

 side. The process on the outer side of the tibia is short and wide 

 with a long pointed tooth on the vipper corner. Figs. 1 d, 1 e. On 

 the inner side of the tibia is a large blunt tooth. The palpal organ 

 has a large thick bulb with a long slender tul^e turned inward to- 

 ward the tip of the tarsus. 



Forest Hills, Boston, Mass., W. M. Wheeler, Tyngsboro, Mass., 

 F. Blanchard. Found b}' Banks on Long Island, N. Y. 



In the spring when the ants come up and rest in large numbers 

 under stones over their burrows, the spiders are found among them. 

 If not frightened the}- move slowly about like the ants and disappear 

 under ground. If frightened they move much more rapidly than 

 the ants and down into the nest or out into the surrounding grass. 



Phrurolithus minutus Bks. Ithaca Spiders, Proc. Phil. Acad., 1892. 



Male 2 mm. long. Abdomen covered with a hard shiny plate 

 and strongly iridescent. Cephalothorax with a narrow light band 

 extending back from the e3'es to the dorsal groove behind this 

 widening into a nearly square spot. PI. VI, fig. 2. The legs are 

 pale except the first pair, which have the tibia black with a white 

 tip and the patella and end of the femur also black, and the second 

 pair which have less distinctly the same markings. The palpi are 

 dark but not black. The tibia of the male palpus has on the outer 

 side a long slender process divided at the end into a short, square 

 lower tooth and a long slender, sickle-shaped upper tooth. The tibia 

 is longer than wide and the outer process starts from its basal 

 half Figs. 2 a, 2 b. On the under and inner side of the tibia is a 

 short, blunt tooth directed forward. 



Tyngsboro, Apr. 5, 1909, in open field under straw. One adult 

 male and several immature males and females. 



Phrurolithus borealis. 



P. alarius (in part) Em. Trans. Conn. Acad., 1890. 



Male 2 to 2.5 mm. long. Cephalothorax light in the middle and 

 dark at the sides without an}- defined markings. Abdomen dark 

 and iridescent with traces of a pattern on the hinder half Legs 

 3 and 4 pale without any spots. Leg 1 has the tibia black with 



