J. H. Enierton — Spiders of the Family Thomisldm. 369 



has the littte hook on the end. PI. xxx, fig. \f. The bulb is 

 round at the base and has a shallow notch at the distal end, over 

 which is the short and small tube, twisted once at the end. 



The young male has the form of the female with part of the 

 markings of the male. The femora and palpi are light colored. 

 PL xxx, fig. Ic. 



The female and male from Menge's collection of Prussian spiders 

 in the Museum of Zoology at Cambridge, are exactly like American 

 specimens, except that the female has the hairs on the legs a little 

 more distinct and the epigynum has the lateral openings larger and 

 the middle one proportionally smaller. 



Common all over New England, as far north as the White Moun- 

 tains. 



Mistimena aleatoria = Thomisus aleatorius Hentz = Runcinia BrendeUii 



Keys , 



Adult females are named by Keyserling M. vatia, and young females Runcinia 

 brendellii iu the Museum of Com p. Zoology at Cambridge. 



Plate XXX, figures 2-2(1. 



The female of this species, PI. xxx, fig. 2, is easily mistaken 

 for vatia. It is smaller, the color is more yellow, from light straw 

 color to orange, and it does not have the crimson stripes on the 

 abdomen, though it occasionally has dark reddish brown marks in 

 the same places and a double row of dark spots in the middle of the 

 back. PI. xxx, fig. 2e. The cephalothorax is light yellow or 

 greenish, with the sides a little darkened with brown. The legs are 

 usually yellow without markings, but sometimes, especially in indi- 

 viduals with spots on the abdomen, there are dark marks on the 

 coxa and trochanter, patella, tibia, and metatarsus of the first and 

 second legs. The front of the head is lower than in the other 

 species and the distance between the upper lateral eyes is nearly 

 three times their height. Below the eyes is a white stripe the lower 

 corners of which are extended into lines over the mandibles and the 

 upper corners into a very distinct white line that extends under the 

 eyes and around the sides of the head. PL xxx, figs. 2a, 1h. 



The epigynum (fig. LV;) has the notch less deep than in vatia and 

 more open behind. 



The male is only 3""" long, but with the first and second legs 8'"'" 

 in length. The ce})halothorax is much like that of the female, green 

 with the sides dark brown. The abdomen is bright yellow. The 

 first and second legs are dark brown without any markings, and the 



