168 J. H. Emerton — Kew England Drassidm, 



The maxilhe are a little notched on the oiiter sides and straight 

 on the ends except at the inner corners. The labium is two-thirds 

 as long as the maxillte. It is narrowed toward the tip, where it is 

 about half as wide as at the base, fig. \c(. 



The male palpi are small, the patella and tibia are about of the 

 same length ; at the base of the tibia on the upper side is a large 

 tooth nearly as long as the diameter of the palpus, and curved 

 strongly forward, fig. \h. The tarsus is as long as the tibia and 

 patella together, and pointed at the end. The palj^al organ is small, 

 fig. \h. 



The epigynum of a female from Salem, Mass., appears as in tig. lA 

 with two oblique openings near the posterior edge. 



Salem and Medford, Mass., under stones and leaves. Adult male 

 in August and adult female in June. 



Micaria montana, new sp. 



Plate III, figures 2, 2a. 



This is smaller than the common species. A female measures 4™™ 

 long. The cephalothorax is not twice as long as wide and the widest 

 part is behind the middle. The abdomen is twice as long as wide, 

 not constricted or truncated at either end. The cephalothorax and 

 legs are light yellow-brown, the legs lighter toward the ends. The 

 abdomen is greenish brown with iridescent scales. Across the mid - 

 die is a distinct narrow white line and a less distinct one crosses the 

 front of the abdomen. On the hinder half of the abdomen are four 

 or five white spots. The white markings extend a short way under 

 the abdomen. The epigynum, Plate in, fig. 2a, has two oblique 

 openings near the posterior edge turned more toward each other and 

 less downward than in Micaria longipes. 



Mt. Washington, N. H., July 1, 1874, east side, near the Ledge. 



G-eotrecha, uew genus. 



This genus includes a number of American spiders described by 

 Hentz, under the name of Herpyllus. Besides Ilerpyllus descrijAus 

 and crocatus, H. ornatus, H. long'qyalpus, H. marmoratus, II. cruci- 

 ger^ H. conarius^ H. triUneatus, probably belong in it. II. descrip- 

 tus and H. crocatus were placed by Koch in the genus Agrmca, 

 with which they agree in the shape of the maxillae and position 

 of the eyes. In this, he was followed by Keyserling, who named 

 the specimens of that species in the Museum of Comparative 

 Zoology, in Cambridge, Mass., Agreeca crocata. In the same collec- 



