1904.] NATURAL SCIENCES OF PHILADELPHIA. 273 



Form. — Cephalothorax highest at the posterior eyes, m front trun- 

 cated and less than one-half its greatest transverse diameter. Che- 

 licera with 3 pairs of teeth, weak, nearly straight in front, shorter than 

 the width of the clypeus, in length 1.3 the height of the head in front. 

 Labium broader than long, apically rounded, not one-half the length 

 of the maxillae. Sternum longer than broad. Posterior spinnerets 

 nearly 1.5 times the length of the anterior. Length of leg 1\ to 

 cephalothorax, d^ 5 : 1 ; metatarsus lY longer than patella and tilna 

 combined. Tibia I with 4 ventral pairs of spines. 



Pardosa minima (Keys.). 



Lycosa minivia Keyserling, 1876. 

 Pardosa albopatella Emerton, 1885. 

 Pardosa albopatella Emerton, Stone, 1890. 

 Pardosa minima (Keys.), Montgomery, 1902. 



(Specimens from Pennsylvania and Massachusetts.) 



Eyes (cJ*). — First row narrower than the second, straight, shghtly 

 nearer the second row than to the margin of the clypeus, middle eyes 

 nearer the lateral than each other. Dorsal eye area to cephalothorax 

 as 1 : 3.5. Quadrilateral of the posterior eyes broader than long. 

 Eyes of the second row largest, separated by 1.75 times their diameter. 



Form (&). — Cephalothorax highest at the posterior eyes, in front 

 truncated and less than one-half its greatest transverse diameter, 

 sides of head steep. Chelicera with 3 pairs of teeth, shorter than the 

 width of the clypeus, in length 1.5 times the height of the head in front. 

 Labium at the base as wide as long, truncated apically, not one-half the 

 length of the maxillse. Sternum longer than broad. Posterior spin- 

 nerets longest. Length of leg IV to cephalothorax as 4.3 : 1 ; meta- 

 tarsus IV longer than patella and tibia combined. Tibia I with 4 

 ventral pairs of spines. 



Comparison. — This species is most closely related to nigropalpis. 

 The c? of minima can be readily distinguished from that of nigropalpis 

 in having the palpal patella entirely white instead of deep black, in 

 the different coloration of the legs, and in the difference in size of the 

 eye area. But the females of the two are much more difficult to dis- 

 tinguish, and there is no good structural difference in the structure of 

 the epigyna. In the $ of 7ninima it is the usual case that the palpal pa- 

 tella has no dark spots below (they are usually present in iiigropalpis) ; 

 the sternum is brown (never deep black) with a yellow median lire 

 anteriorly and a broader black one posteriorly and with some black on 

 the margins (in nigropalpis in the majority of specimens deep black 

 with a yellow median line anteriorly) ; the femora below usually yellow 

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