648 ARANEINA. 



oiie pair is veiy small, while there are eight ocelli. The differ. 

 ent species make cyliutlrical holes in the earth ; that of M. 

 nidulana of the AVest Indies is closed b}' a lid of earth covered 

 beneath with silk. Mygale avicularia Linn., the Bird spider, 

 seizes small birds and sucks their blood. M. Hentzii (Fig. 

 6l27, natural size) ranges from Missouri southward. 



, DiPNEUMONES Latreille. In the remaining genera of spiders 

 there are two lung-sacs, two or four stigmata, and three pairs 



Fig. 027. 



of spinnerets. The}' are divided into two groups, the "Sed° 

 entary" and "'Wandering" spiders. The sedentary species 

 have the ocelli usually arranged in two transverse rows ; they 

 spin webs in which thej' remain and seize theii* prey. In the 



