66 J. TI. Emerton — Nexo England Therididce. 



witli tlie ends of the soft appendages inside tlie circle and a stout 

 straight appendage outside, 



Mt. Washington, N. H. ; Eastern Massachusetts; Providence, R. I., 

 under leaves. 



Diplostyla concolor (Reuss). 



Stylophora concolor Menge. 



Plate XX, figure 3. 



Length about 2"'°' in both sexes. Cephalothorax yellow-brown. 

 Legs yellow. Abdomen dark gray or brownish. The copulatory 

 organs, are unlike any other native species. The epigynum has a 

 long flexible process on the upper edge, extending back to the middle 

 of the abdomen. Under the base of this process are the two holes of 

 the epigynum, between which is another soft process more slender 

 and half as long as the upper one. Tlie tarsus of the male palpus is 

 long and tapering. The tarsal hook is thickened at the base and 

 extends half the length of the tarsus, it is curved outward at the end, 

 and the tip is rounded and lias a slight notcli near the end. The 

 tube and other appendages parallel with it curve upAvard from the 

 base of the tai'sus and extend in nearly a straight line to its extremity, 

 over which this tube is twisted round in nearly a circle. The soft 

 tips of the inner appendages are also twisted around with it. 



This is common under leaves in winter. I have it from Cambridge 

 and Salem, Mass.; Montreal, Canada; and New Haven, Conn. 



Diplostyla canadensis, new. 



Plate XXI, figuke 1. 



This species resembles I). n![/rina but is smaller and has no 

 markings on the abdomen. It is about 2'""' long. The cephalothorax 

 and abdomen dark. Legs light yellow-brown. The male palpi are 

 short and the palpal organ shorter than in nigrina. The tarsal 

 hook is as long as in nigrina, but narrower at the end, one corner of 

 which ends in a fine point. The tube is similar to that of nigrina. 



One male from Montreal, Canada. 



Drapetisca Menji;e. 

 Contains only 7>. sociaUs, which has long spines on the palpi and 

 leo-s the abdomen flat and wide behind with peculiar black and 

 white markings. PI. XXI. The male palpus has :\. large curved 

 process at the base of the tarsus behind the tai-snl hook. The epigy- 

 num. Fig. 2i, is long and not folded, and extends backward along the 

 under side of the abdomen. 



