THE COMMON SPIDERS 



with the cephalothorax narrow in front and the eyes covering 

 about half the width of the head and differing in their relative 

 positions among the different genera. The labium is long and 

 the maxillae slightly widened at the end, or with the outer 



O corners rounded off and sometimes a 

 crease or depression in the middle. 

 The joints of the first legs are some- 

 times thickened in the middle. The 

 lower spinnerets are longer than the 

 others and flat on the end. 



2. Micaria, Geotrecha, Phrurolithus, 

 Agrceca, and Anyphaena, in which the 

 body is less flattened, the legs longer, and 

 the movements quicker. The colors are 

 lighter and more varied. The labium is 

 short and the maxillae with straight sides. 



3. Clubiona, Chiracanthium, and 

 Trachelas, in which the colors are plain 

 and light, the eyes spread over more than 



half the front of the head and close 

 to its front edge. The labium is as 

 long as it is in Drassus, but con- 

 tracted at the base. The maxillae 

 are narrow in the middle and flat 

 and wide at the ends. 



Gnaphosa conspersa. — Half an inch 

 long and rusty black in color. In 

 alcohol the legs and cephalothorax 

 are dark reddish brown and the abdomen gray. The whole 

 body is covered with fine black hairs. The cephalothorax and 

 abdomen are about the same size and a little flattened. The 

 legs are stout and all nearly the same length. The upper row 

 of eyes is nearly straight and the lateral eyes much farther 



Figs. 3, 4, 5. Gnaphosa conspsrsa. 

 — 4, female enlarged four times. 

 3, the eyes seen from in front. 

 5, the maxillae, labium, and ends 

 of the mandibles from below. 



