PHALANGES OF THE UNITED STATES. 23 



than in the male, and with the distal angle of the second article pro- 

 longed into a more or less prominent blunt process. Ventral surface 

 mostly of a similar, but little lighter color than the dorsum. Coxce 

 of the same color as the ventral surface, tipped with white. Tro- 

 chanters blackish. Legs in the males black ; in the female dark brown. 

 Penis rather stout, flattened, at its distal extremity contracted and 

 bent upwards, ending in a short acute point. 



Length- of body, #,0.2; ?, 0.3. Length of Legs, $, (1) 1.6, (2) 

 3.1, (3) 1.6, (4) 2.1; ?, (1) 1.6, (2) 3.6, (3) 1.6, (4) 2.2. 



REMARKS. I have a large number of specimens of this 

 species captured by myself in the woods in Huntingdon 

 Co., Pennsylvania. They were in great numbers running 

 over the dried leaves, stones, bushes, &c. The males 

 .were much more numerous than the females, in fact I saw 

 six times as many of them as of the latter. I was not so 

 fortunate as to find any in coitu, but believe the two forms 

 to^be different sexes of the same species on the same 

 grounds as mentioned in the remarks on a former species. 

 The females are to be distinguished by their larger size, 

 the brown color of their legs and palpi, as well as the 

 darker and less uniform color of the dorsum, which also 

 frequently loses almost all of the reddish tint. 



4. Phalangium exilipes WOOD (nov. sp.). 



Dorsum very closely, minutely granulate, of a dark blackish or a 

 olden brown ; with a pair of longitudinal, whitish, irregular bands 

 commencing at the eye eminence and running an- 

 ""' teriorly to the margin of the cephalothorax, where 

 they are bent at right angles and prolonged into a 

 teri'n- a v1ew8 ll (nia"- uarrow marginal band ; each abdominal scutum with 

 nifled). a more or less regular transverse series of very 



distinct whitish dots, which are often placed at equal distances from 

 one another so as to form longitudinal as well as transverse series, 

 but on other specimens the distance between those of the posterior 

 scuta is only half that between those on the anterior scuta. Cephalo- 

 thorax with a pair of grooves on each side anteriorly, somewhat 

 parallel to the margin, behind the eyes with four very distinct trans- 

 verse straight impressed lines and corresponding ridges. Eye emi- 

 nence pronounced, remarkably smooth, slightly constricted at the 



