456 J. H. Emerton—New England Spiders of 
half an inch long and quarter as wide, narrowed at both ends, and 
with numerous short points by which they are attached to the web 
around them. I have found them with the female under stones. 
The cocoons are light brown, and each female appears to make sey- 
eral of them. The cocoons are made in July. 
This spider is found all over New England, but is not common 
anywhere. I have taken them from several places around Boston, 
Mass., in New Haven, Conn., and in Simsbury, Conn. 
I have specimens of both sexes from the southern part of France, 
given me by Mr. E. Simon. It is found in Italy and Spain. The 
common Uloborus of the north of Europe (U. walckencerius) is a very 
different species. 
Hyptiotes Wlk. = Mithras, Koch. 
Hyptiotes cavatus. 
Pu. XI, FIGURES 2 TO 2h. 
This peculiar spider is without much doubt the one described and 
figured by Hentz under the name of Cylopodia cavata, although he 
saw but six eyes and four spinnerets, and otherwise described it in- 
correctly. 
Its habits have been well described by B. G. Wilder in the Popu- 
lar Science Monthly, 1875, where he calls it Hyptiotes americanus. 
This spider resembles a shortened Uloborus. The adult female is 
‘about 4™" long, and is colored like the end of one of the dead pine 
branches among which it usually lives. 
The cephalothorax is as broad as long, highest in the middle just 
behind the eyes, and hollowed behind under the front of the abdo- 
men. 
The abdomen is oval, a little flattened in front. On the back are 
four pairs of low humps, the second largest, on each of which are a 
few stiff hairs. 
The arrangement of the eyes resembles that in Uloborus, but the 
eyes are farther apart and farther back on the thorax. PI. x1, figs. 
2, 2a. Sar 
The legs are short and thickest in the middle, tapering distinctly — 
from the patella to the claws. The hind metatarsus bearing the 
calamistrum is curved inward on the outer side. The claws have 
three or four teeth and under the claws are a few curved spines, 
some of which are toothed as in Apeira. Pl. x1, fig. 2e,4,g. The 
palpal claw has four or five teeth. 
The mandibles are very small and slightly arched forward near the 
base. 
