564 



Animals in Massachusetts. 



Gammarus. 



mucronatus 1 



ORD. IV. ISOPODA. 



Idotsea. 



caeca? 

 Stenosoma. 



irrorata. 

 Oniscus. 



affinis. Sea shore. 

 Armadillo. 



pilularis. 



ORD. V. BRANCHIOPODA. 



Limulus. 



monoculus. Bost. Harbor. Horse Shoe Monoculus. 



Branchipus. 



one species. Stagnant water 



VII. ARANEIDES. Latr. 



THE SPIDERS. 



BY PROFESSOR N. M. HENTZ. 



The following summary catalogue embraces a wider field than 

 Massachusetts. The species, indeed, have been obtained from various 

 parts of the United States. This arose from a misapprehension on 

 the part of Professor Hentz of the precise object I had in view. 

 Yet I did not think it important enough to request him to alter the 

 list. The interesting notes which acompanied this catalogue, being 

 too extended for this place, were fowarded to the editor of the Amer- 

 ican Journal of Science, and published in the 21st volume of that 

 work. The whole paper forms, indeed, a valuable monagraph of the 

 Spiders of the United States. 



