1908.] NATURAL SCIENCES OF PHILADELPHIA. 197 



Total length, 9.3 mm. Length of cephalothorax, 3.7 mm.; width, 

 3 mm. 



Length of leg I, 13.1 mm. : tib. + pat., 4.8 mm. ; met., 3.5 mm. 



Length of leg II, 12.5 mm. 



Length of leg III, 12.8 mm. 



Length of leg IV, 7.3 mm. ; tib. + pat., 5.3 mm. ; met., 5.5 mm. 



Male.— Colov much as in female but darker and the markings more 

 obscure ; the legs often almost entirely black, showing no annulations 

 except distally or none at all. Tarsus of palpus black, as also the 

 femur and often the tibia, the patella lighter. Smaller than female. 



Tibia of palpus with sides substraight, enlarging from base to apex, 

 clearly narrower than the tarsus. Scopus very short, about as broad as 

 long, distally rounded and a little uncate at exterior side; spur usually 

 in front concealed by fold ; embolus short, extending but little beyond 

 middle; conductor divided into two open furrows by a narrow chitinous 

 ridge extending obliquely downward and outward, the posterior mar- 

 gin of the exterior furrow with two short, uncate tenacula close together 

 or in part overlapping. (PI. XIV, fig. 8.) 



Total length, 6 mm. Length of cephalothorax, 3 mm. ; width, 2.3 mm. 



Length of leg I, 10.1 mm. ; tib. + pat., 3.3 mm. ; met., 2.9 mm. 

 . Length of leg II, 10.2 mm. 



Length of leg III, 10.4 mm. 



Length of leg IV, 13.6 mm. ; tib. + pat., 4.3 mm. ; met., 4.4 mm, 



Svn.— 1892. Pardosa lapidicina, Marx, Proc. Ent. Soc. W., 2, p. 161. 

 — — . Pardosa lapidicina, Banks, Proc. Acad. Nat. Sci. Phila., p. 6S. 



. Pardosa ohsolcta Banks, ibid., p. 71, PI. 3, fig. 4.5. 



. Pardosa venusta Banks, ibid., p. 69, PI. 1, figs. 42, 42a. 



1894. Pardosa lapidicina Emerton, Trans. Conn. Acad. Sci., 9, p. 428. 



1902. Pardosa lapidicina Emerton, Common Sp. U. S., p. 78, figs. 186, 187, 

 188. 



1903. Pardosa lapidicina, Montgomery, Proc. Acad. Nat. Sci. Pliila., p. 

 652, PL 29, figs. 6, 9. 



1904. Pardosa mercurialis Montgomery, Proc. Acad. Nat. Sci. Pliila., p. 

 270, PI. XIX, figs. 20, 21. 



. Pardosa iexana Banks, J. N. Y. Ent. Soc, p. 115, PI. V, fig. 4. 



Type locality. — Massachusetts and Connecticut. 



//abi'^o/.— Massachusetts, Connecticut, Rhode Island!, Canada, 

 New York !, New Jersey !, District of Columbia !, Pennsylvania, Indiana !, 

 Iowa !, Kansas !, Arkansas !, Texas !. 



A very familiar species in the Northern States, found among stones 

 along streams and also to some extent remote from water in diy places. 

 Its general dark gray color blends well with the color of the stones among 

 which it lives . Specimens from the West and South are commonly much 

 lighter than specimens from the Northeast, and in them the marginal 



