418 J. H. Emerton — Canadian Spiders. 



in still others the white spot has a smaller dark spot in the middle. 

 The abdomen is equally variable in color, sometimes being well 

 covered with pairs of dark and light markings arranged in the 

 ordinary way and on others almost white with a few black spots 

 variously arranged usually at the hind end, PL iv, figs. 7, la. 

 The markings of the third and fourth legs are usually the same, 

 dark spots at the end of the femur and both ends of patella and tibia, 

 sometimes spreading so as to cover the whole of these joints, and a 

 dark spot at the base of the metatarsus. The first and second legs 

 are more variable in color, sometimes being uniformly light yellow 

 or orange and at others having dark markings at the ends of the 

 joints or covering nearly the whole leg. PI. iv, figs. 7, 7a. 



The epigynum has a projecting piece in front and two openings 

 surrounded by rounded ridges behind (PI. iv, fig. 7c). This is the 

 form in several females from Ottawa. In a western specimen, how- 

 ever, the ridges around the epigynum are more irregular (PI. iv, fig. 

 7(^), as in the type-specimen from Colorado. 



A specimen from Laggan that comes nearest to the type specimen 

 has the markings of the cephalothorax and legs indistinct and the 

 abdomen covered with light brown spots without any definite mark- 

 ings. The sternum is marked with brown spots between the legs. 

 The epigynum (fig. 7f?) has the side-ridges irregular and the pos- 

 terior middle lobe shorter than in the eastern specimens. The 

 grooves at the front around the anterior process are less distinct and 

 not so plainly V-shaped as in Thorell's specimen. 



Most of the specimens are from a peat bog near Ottawa and 

 vary greatly in size and markings. One only is from the neigh- 

 borhood of Laggan. 



Misumena vatia Thorell, Syn. Eur. Spiders. 



Em. New Eng. Thomisidse, 1892. Thomisus fartus Hentz. 

 Anticosti I, Gulf of St. Lawrence. All over New England. 

 Mentioned by Blackwall as Thomisus citreus in list of Canadian 

 spiders from Prof. Potter In Ann. and Mag. of Nat. Hist., 1846. 



Misumena aleatoria Em,, N. E. Thomisidae, 1892. 



Thomisus aleatorius Hentz. Runcinia hrendellii Keyserling, Spionen Americas. 

 Alberta Territory. New England. 



Misumena asperata Em., N. E. Thomisidse, 1892. 

 Thomisus asperatus Hentz. * 



Gaspe. New England. 



