64 J. II. E)iierton — New England Therididm. 



Linyphia mandibulata, new. 



Plate XIX, figure 2. 



About tlie same size as communis, or a little laru:er. The female 

 resembles the other species, but the male diifei's from them in the 

 great length of the mandibles and the tube of the palpal organs. It 

 resembles closely X. pusilla of Europe, but in my specimens the 

 males liave the back of the cepluvlothorax straight, not arched as in 

 pusilla. The mandibles are slightly longer and wider at the end an<l 

 the four teeth are more prominent than m pusilla. The palpal organs 

 are almost alike, but the epigynum o( pusilla has two separate and 

 moderately large openings, like marc/inuta, while in mandibulata the 

 openings are covered. P^ig. 2b. The colors of the female are variable, 

 but the light markings are smaller and the whole body darker than in 

 pusilla. The cephalothorax is yellowish brown, without markings. The 

 abdomen of the females is usually dark brown, almost black, with 

 several light yellow spots, usually two across the front part of the 

 back and several around the sides and behind, forming in some a 

 continuous line around the middle of the abdomen. Fig. 2, The 

 males are slightly smaller than the females and have the abdomen 

 much smaller and narrower, with no light markings, except the spots 

 on the front of the abdomen. The head of the male is much length- 

 ened forward beyond the mouth, and the mandibles are very long and 

 slant backward toward the maxillae. Fig. 2b. At the ends the man- 

 dibles are widened and have four teeth on the inner corner. The 

 mandibles have a large process in the middle on the inside Fig. 2a. 

 The epigynum is simple externally the lateral lobes forming a notch 

 over the middle one. The tube of the palpal organ is long and stiff, 

 and turns one and a quarter times round the end of the palpus. Fig. 

 2d. The web is flat, in short grass, and males and females are found 

 together there in the last of May. 



Peak's Island, near Portland, Me. ; 31 1. 'Washington, N. H. ; Quincy 

 Mass. ; and Albany, N. Y. 



Stemonyphantes Menge. 



Stemonyphantes buCCUlentUS (Clerek) Thor., Syn. Kuropean Spiders. 



S. trilineata Mciige. 



Plate XX, figure 1. 



Female, about 6""" long. Color yellowish gray. Cei)halotlu)rax 

 with a black stripe in the middle and one each side. Abdomen with 

 three rows of black S|)Ots, more or less connected. Femur and til)ia 

 with black spots at the end and in the middle. The spots are bright" 



