131 



Tegenaria medicinalis Hentz is near Coelotes atropjs, possibly 

 the same species. 



Micrommata canadensis Hentz is represented by the common 

 Ocyale mirabilis. 



Pylarus bicolor Hentz belongs to the genus Ariadne, and is 



very near A. insidiatrix. 



J. H. JEmerton. 

 Leipzig, Dec. 16, 1875. 



Arctic Lepidoptera an the White Mountains. 



Mr. Roland Thaxter sends me a male specimen, taken by 

 Mr. B. P. Mann, above the tree-line, on Mount Washington, 

 which seems to be the first indication of the probable occur- 

 rence of Laria Rossii Curtis on the mountains, and still fur- 

 ther to illustrate the relations between the Arctic and Mount 

 Washington fauna?. The specimen is a male, smaller than 

 Curtis' figure, with the dark band on the secondaries so broad- 

 ened and diffused as to leave but a discal yellowish patch. The 

 markings on the fore wings seem quite similar, and, in the ab- 

 sence of a larger series of specimens, the more closely scaled 

 and rather darker Mount Washington specimen should not be 

 held to indicate a distinct species. It appears that arctic spe- 

 cies are subject, as a rule, to unusual variation. My specimens 

 of Pachnobia earned from Labrador strongly vary in depth of 

 color and distinctness of marking ; a specimen, undoubtedly of 

 this species, sent me by Mr. Morrison, from Mount Washing- 

 ton, is very pale. We shall probably find, when more material 

 is collected together, that we have, besides Anarta melanopa, 

 Agrotis islandica, and Pachnobia carnea, also the Bombycid 

 Laria Rossii to add to our list of Arctic Lepidoptera found in 

 the Mountains of New Hampshire. A. M. Grote. 



Chrysalis with attached Larval Head. 



Mr. Roland Thaxter brought me, Sept. 27th, 187"), the liv- 

 ing chrysalis of Ewphoeades Troilus, with the head of the cater- 

 pillar still remaining upon it. The head is split, as ordinarily 

 when cast for the last time, and the two hemispheres hug the 



