184 J. H. Emerion, 
as narrow at the base as in P. pumuilus. The tarsus is oval and 
less pointed than in 77farius, with the notch smaller and not as 
near the tip. At the base of the palpal organ is a long hook turn- 
ing out at right angle to the tarsus, Pl. I, fig. 13. The female is 
of the same size as the male. The epigynum is elongated, a third 
as long as the abdomen. At the front end close behind the fourth 
coxee is a small, dark colored, sharp point directed forward a little 
behind which the round spermathece show through the skin, and 
behind these two parallel dark lines extend backward and meet at 
the base of a short, pale, blunt appendage directed backward. 
This species is found under leaves in company with riparius and 
pumillus. Clarendon Hills and Waltham, Mass. 
Argyrodes cancellatus. (Plate I, figures 10 to 10c.) 
Theridion cancellatum, Hentz. 
Laszola cancellata, Emerton, N. E. Therididae. Trans. Conn. Acad. 
1882. 
Argyrodes larvatus, Keyserling. Spinnen Amerikas. 
This species, found in Connecticut, is abundant on Long Island 
and farther south. It is sometimes found in webs of its own and 
often in webs of larger spiders, especially in those of Epezra strix. 
The colors are light gray and brown, with silvery spots on the 
abdomen, and when it is motionless with the feet drawn up, it is 
hard to distinguish from a piece of leaf or bark dropped by accident 
into the web. : 
The female is 2.56 mm. long, with the cephalothorax 1 mm. long. 
The head is higher, and more vertical in front than in ¢rigonum 
and the front middle eyes project shghtly on the front of the head. 
The lower part of the head is rounded and extends forward a little 
beyond the mandibles. The abdomen is as high as wide, rounded 
above and narrowed toward the spinnerets, which are in the middle 
of the under side. At the end of the abdomen is a double tubercle 
with the lower half largest, and on each side of the abdomen a 
little farther forward another tubercle. The epigynum has a wide 
oval opening, partly covered and divided by a projection of the 
front edge. 
The male is 3 mm. long and the cephalothorax 1.6 mm. The 
lower part of the front of the head extends forward and downward 
in front of the mandibles in a nose-shaped process, above which 
there is a round pit on each side of the head. The abdomen is 
smaller and narrower than that of the female, and covered above 
with silvery spots mixed with gray and black. The male palpi are 
ee 
