484 J« P- J- R'^vN. 



seem to show, however, that the younger whorls may Uick the 

 transverse ribs. 



Distribution. North -East Greenland: "Kløft Г' on Store 

 Koldewey Island (many specimens). In loose-lying stones at "4. 

 Sænkning" on the same island (many spec). 



Хол^а Zembla: in bituminous limestone at Skodde Bay. 



(U. Chemnitzia hamptonensis Morris Л LvcErj. 

 PI. XXXV, fig. 8. 



1854. Chemnitzia Hamptonensis Morris & Lycett, Mollusca from the Great Oolite. 



p. 50: PI. 7, fig. 1. 



The shell more slender than in the previous species; otherwise 

 resembling this greatly. The whorls Hat or slightly arched, separated 

 by deep sutures. The older whorls with numerous, fairly strongly 

 curved, rounded transverse ribs; the younger whorls with faint, 

 irregular transverse folds and distinct, curving and obliquely placed 

 lines of growth. 



Length ca. 9 mm, thickness ca. 3*5 mm. 



This species occurs in considerable abundance along with the 

 preceding, from which it is so little different, that better material 

 will probably prove it to be the same species. 



Distribution. North-E^ast Greenland: "Kløft Г' on Store 

 Koldewey Island (several spec). In loose-lying stones at "4. Sænk- 

 ning" on the same island (several spec). 



England: in Great Oolite. 



()2. Aporrhais sp. (1). 



In two of the black concretions (with Iktrnievia) occurring as 

 boulders at Danmarks Havn, there are numerous species of an 

 Aporrhais. Unfortunately it has not been possible to separate an 

 even approximately complete specimen. 



The older whorls are strongh'^ arched; the younger have a strong 

 ridge along the middle. Under this ridge on the last whorl there is 

 a second, somewhat fainter ridge. The outer lip forms a short wing, 

 on which the two ridges of the last whorl run out and continue 

 further as two long (?), diverging fingers. Behind, as usual in 

 the genus, there is a canal up along the lowermost part of the 

 spire. Otherwise the shell is covered with fine, raised spirals, at 

 variable , but as a lule comparatively great distances from one 

 another. 



It has not been i)Ossible tor me to refer these specimens to any 

 hitherto known species; probably the species is new. 



