Maryland Geological Survey 677 



Description. — "Shell elongate, terebriform ; spire rapidly ascending. 

 A^olntions flattened, regularly increasing from the apex, the last one 

 scarcely ventrieose, or but slightly ventricose; about nine in the length 

 of two inches and a half from the base. Aperture sul)ellii)tical ; the colu- 

 mellar lip extended below. 



" Surface showing remains of line stria? of growth, without evidence 

 of other surface markings; suture banded."' Hall, 1879. 



The surface of this species is ornamented with coarse sigmoidal striae, 

 which are rarely preserved. The Marjdand shells agree well with those 

 figured by Hall in general features but differ in greater proportional 

 length of the volutions. 



Length 60 mm.; diameter Vi iniii. 



Occurrence. — Jennings Foioiatiox. TnEiiuNG Member. Town 

 Creek, 2228 abundant. 



Collection. — Maryland Geological Survey. 



LOXONEMA ? glabrcm n. sp. 

 Plate LXIX, Figs. 11-14 



Description. — Shell ehmgate, turretiform: apical angle small; volutions 

 four or more in number, last volution scarcely more inflated. Volutions 

 rounded, slightly flattened on periphery in some specimens, suture deep. 

 Surface smooth, columella absent. 



Length 30 mm.; diameter 10 mm. Average size of larger volutions: 

 height 5-6 mm.; width 8-10 mm. 



The generic relations of the individuals referred to this species are not 

 assured. Although preserved in a matrix which shows the fine details 

 of other shells no trace of exterior ornamentation has been observed. 

 Longitudinal sections resemble those of the genus Lonoxnema as figured 

 by Perner ' in Syst. Sil. Boheme which genus these specimens also re- 

 semble in external form. They differ, however, in the apparent absence 

 of ornamentation, a feature which may possibly be due to conditions of 

 preservation although this does not seem very probable. 



lyol. iv, th. ii, p. 32G, fig. 231. 



