10 J. II. Emerton — IVeio England Therididm. 



Theridium spirale, new. 



Plate I, figures 2 to 2d. 



Length of female 3""" ; male 2^'"™. Cephalothorax of female brown- 

 ish orange above and below, with an indistinct dark stripe above as 

 wide as the eyes at the forward end. In tlie male this stripe is much 

 more distinct. Legs of female yellow, with dark rings at the ends of 

 the joints. In the male the legs are yellow at the base, and become 

 darker toward the tip. The abdomen has less red color than in differens. 

 The middle stripe is distinctly marked, especially in the male, and is 

 sometimes slightly reddish in the middle, but oftener gray with a 

 dark spot near the front end. The rest of tlie abdomen is yellowish 

 gray, almost black near the middle stripe, in well marked specimens. 

 The females are much like those of differens.^ but the males of these two 

 species are very distinct in color and markings. Fig. 3, 3a. The epigy- 

 num has two openings outside the edge. Fig. 2c. The palpal organ lias 

 a very long tube which goes twice round the top of the bulb. Fig. 2b. 

 The inner tubes of the epigynum correspond in length with those of 

 the palpal organs. Fig. 2d. 



This does not seem to be as common as fusca. I have it from sev- 

 eral localities near Boston and Salem, Mass.; from Williamstown, 

 Mass., J. S. Kingley ; and New Haven, Conn. 



Theridium montanum, new. 



Plate I, figures 3 to 3c. 

 This species I have found on various parts of Mt. Washington, 

 N. IL, in the summers of 1874 and 1877, in webs in spruce trees. It 

 is a little larger than spirale and resembles it in color, though the 

 markings are different. The legs in both sexes are yellow, browner 

 toward the tips, and with indistinct dark rings at the ends and middle 

 of the joints. The thorax orange, with a plain dark stripe as wide as 

 the eyes in front, and black edges. Tlie light stripe on the abdomen 

 is yellowish gray. It is narrowed in front and the usual dark color 

 outside of it forms at this part two indistinct black spots. 

 Farther back where the middle stripe narrows again, there are two 

 other black spots in the dark color, of various degrees of distinctness 

 in different individuals, so that some specimens have four plain black 

 spots on the abdomen. Toward the tail the middle slripe is narrow, 

 and in some individuals crossed by transverse black marks, like Liny- 

 phia. The black and gray markings on the sides of the abdomen, which 

 are irregular in most species, in this sometimes form distinct black 

 spots. The sexes are much alike in color and size. The epigynum 



