1917.] NATURAL SCIENCES OF PHILADELPHIA. 295 



•detail. Both are small, shelly, coiled two and a half times and not 

 sharply differentiated from the conchs. Both nuclei are elevated 

 or trochoid but that of the type species is the higher. The apical 

 tips or initial points of the protoconchs of both species are immersed 

 in the later nuclear turns but this is probably more pronounced in 

 E. lyroquadricostata. 



Genus PARAMOEEA n. gen. 



Etymology: llapd^ near, Morea, a genus of gastropods. 



Type: Paramorea lirata n. sp. 



Shell small and porcellanous, ovate-conic in outline; spire acute, 

 less than half the total altitude of the shell; protoconch scar small; 

 conch solid and slightly glazed, paucispiral; axial sculpture absent; 

 spiral sculpture well defined; aperture ovate, deeply notched in front; 

 outer lip well rounded, its margin simple or slightly crenulated; inner 

 lip excavated and thinly glazed; columella slender and marked by a 

 feeble oblique plait or twist of the pillar near the anterior extremity; 

 umbilical chink narrow, oblique and deep, canal short and broad. 



This genus is proposed to include a single species from Coon Creek 

 which seems to represent a group of univalves related to Morea. 

 This species is well characterized by its sharp spiral sculpture, deeply 

 notched aperture, and further by its very oblique and narrow um- 

 bilicus or umbilical chink with a general aspect and generic features 

 that do not allow it to fit naturally into any known genus of related 

 shells. The type of the genus Morea?'^ was described from the Ripley 

 formation. Two or three species other than the type also occur at 

 that horizon so that it is not surprising to find another group related 

 to this very unique genus in the Upper Cretaceous of the southeastern 

 states. The genus Paramorea differs froni Morea in having instead 

 of a well defined umbilicus a narrow and oblique chink, and in the 

 development of only spiral ornamentation instead of both spiral and 

 axial, in the acute spire and in the absence of a strongly reflected 

 inner lip such as that of Morea. In general aspect, i. e., the acute 

 spire, strong spiral sculpture and narrow umbilicus this genus greatly 

 resembles Trichotropis in features as presented by the recent North 

 Atlantic species Trichotropis horealis Broderip and Sowerby,^** but 

 differs from that form in having a strong anterior notch or short open 

 canal. In 1889, C. A. White described and figured an imperfect 

 specimen from the Chico series of Shasta county, California, a species 



23 Conrad, T. A., 1860, Jour. Acad. Nat. Sci. Phila., 2d ser.. Vol. IV, p. 290, 

 PI. 46, fig. 30. 



30 Adams, H. and A., 1858. Genera Recent Moll, Vol. I, p. 279, PL 29, fig. 6. 



