130 



16. Thanatus 6blongus=z Thomisus duttonii Hen'z. 



17. Epiblemvm scenicum zz= E. faustum Hentz. 



18. Aehirops fasciatus= Attus leopardus Hentz. Only one 

 American specimen was compared. 



19. Tegenaria derhamii. 



20. Amo'irohius ferox. 



21. Drassus lapidieola, one of the most common Drassidae 

 in both countries. It is probably described by Hentz as Clubi- 

 ona obesa. 



Besides the above, the following American species are repre- 

 sented in Europe by closely similar species. 



Epeira insidaris Hentz was formerly supposed by Thorell to 

 be E. marmorea, but is distinguished from the latter by constant 

 differences in color and markings and in the copulatory organs 

 of both sexes. Another American Epeira, perhaps the E. obesa 

 of Hentz, is also closely related to E. marmorea. 



Epeira trifolium Hentz. The females are only distinguish- 

 able from those of E. quadrata by slight differences in the 

 epigynum. The males of E. trifolium are not certainly known. 



Epeira Nordmanni Thor. Several young females from the 

 coast of Maine seem to be of this species, but no adults have 

 been compared. 



Epeira Packardii Thor., found by Dr. Packard in Labrador, 

 and by Mr. Sanborn on Mt. Washington, N. H., at an eleva- 

 tion of about 5000 feet, is very near to and possibly identical 

 with E. carbonaria, which occurs in the Alps, at an elevation 

 of 6000 or 7000 feet. 



Theridion boreale Hentz, one of the commonest spiders in 

 New England, is represented in Europe by the equally common 

 Steatoda bipunctata. The males are easily distinguished by 

 differences in the palpi, but the females of the two species are 

 readily mistaken for each other. 



Lilliyphantes corollatus. A young female from Maiden, Mass., 

 seems to be of this species. 



Pachygnatha trilineata Koch, the common Pachygnatha in 

 the neighborhood of Boston, is very near P. elerckii of Europe, 

 but they are easily distinguished by the palpal organs. 



