1913.] natural sciences of philadelphia. 183 



Species of Koch. 



Corinna tricolor Koch. 



One female, A. M. E. closer to A. S. E. than to each other, P. M. E. 

 about three diameters apart, closer to P. S. E. A distinct species. 



Corinna amoena Koch. 



A female is ornata Htz. Cephalothorax reddish, femur I blackish, 

 hind tibia and patella banded. 



Corinna cingulata Koch. 



Two females are bivittata Keys. ; two bands on abdomen, hind legs 

 lined, femur I dark on base, rest pale. 



Hegalostrata venifica Karsch. 



One male ; a tooth at base of fang, two large teeth on the paturon, 

 outer one curved forward; tibial process of male palpus is about 

 three times as long as broad, as broad at tip as at base, the tip ob- 

 liquely truncate. 



Xystious luctans Koch. 



Not in the Berlin Museum, although there are several species 

 from Carolina, but not labelled, as stomachosus, gulosus, and Coria- 

 rachne versicolor. 



Agelena pennsylvanica Koch. 



Three specimens; are our common A. ncevia, one is a good-sized, 

 well-marked female, the two others are not mature. 

 Teratodes depressus Koch. 



I did not find in the Berlin collection, but there is no doubt as to 

 what it is from the figure and description. 

 Pachygnatha tristriata Koch. 

 P. xanthostoma Koch. 



In the Berlin Museum are four specimens behind a label "Pennsyl. 

 Zimm.," but no species label, these are his tristriata according to the 

 description, and are what Emerton has so identified. 



Following this is a label ''tristriata" and " Pennsjd. Zimm."; 

 behind these labels are seven specimens of our P. hrevis. There are 

 no other American Pachj^gnatha in the collection. The name 

 labels have been put on after Koch's time, the locality labels are 

 original. It is therefore evident that the label "tristriata" has been 

 misplaced, and that the seven specimens labelled "tristriata" are 

 Koch's xanthostoma, since they agree with his description, and that 

 P. xanthostoma is P. hrevis. 

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