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AMERICAN JOURNAL 



Animal black, mantle dirty yellow, with black spots which are 

 to be seen through the shell. The foot long but narrow, the 

 hinder tentacles are long, and proportionately rather thick, the 

 under tentacles short and blunt. 



As I am not in possession of specimens, I cannot decide if this 

 species is identical or not with H. chersina, Say. Mr. Morse 

 has lately tried to show the difference between the latter species 

 and H. fulva of Europe. The most Greenland specimens agree, 

 however, best with his fig. 47 of Conulus fulva, although several 

 have a much higher spire. It must be remembered that it is 

 possible that there are confounded two species under the name 

 of fulva, of which H. Mortoni, Jeffr., has broader whorls, flatter 

 spire, and a darker color. 



Beck quotes erroneously H. nitida, Fabr., to this species, prob- 

 ably only because it was the only Helix from Greenland known 

 to him. IT. fulva, "Act. hafn," from a Norwegian specimen 

 of IT. fulva, is probably quoted from memory. 



From comparison with about a dozen specimens, most of 

 which are not adult, I cannot decide the question. The keel of the 

 last whorl is very marked, but not so notable as in Danish spe- 

 cimens. Spiral lines are very frequent in the Hyalina group, 

 but seem to me to be only a disease. 



It was found at Skakortok, in 1830, by llolboll. Moller 

 found it solitary under humid moss with Salices, Alchemilla 

 and Angelica; at Nisik, in the Kuksukfjord (District of Godt- 

 haab), in July ; at Tiksaluk (District of Julianehaab), in the be- 

 ginning of August. Above the ruins in the Amaraglikfjord, 

 July 6, 1840, in a dense thicket of willows on the border of a 

 rivulet. There may have been in all about 20 specimens col- 

 lected. 



4. Pupa (Vertigo) Hoppii, Moll. Plate 3, figs. 6—9. 



T. subperforata, cylindraceo-ovata, tenuis, subtilissime, stria- 

 tula epidermide brunnea seepe alba, nitidula, pellucida ; spira 

 convexo-conica ; anfr. 5 vel 7J convexi, sutura profunda, antice 

 ascendens ; columella plica obtusa ; paries aperturalis plica com- 

 pressa fere mediana ; apertura subtriangularis, perist. reflexius- 

 culum, labro externo modice arcuato denticulo obsoletissimus 

 ante mediano. 



Long. 2£ m., diam 1 m. 



Pupa Hoppii, Moll., 1842, p. 4. 



" Trochel, Arch. f. N. g. 1843, 2, p. 126. 

 " " Kuster, t. xix, f. 29, 30. (Pfr.) 



" Pfr., ii, p. 328 ; iii, p. 536. 



