DESCRIPTION OF SPECIES 265 



Class Conularida 

 Genus Conularia Miller 

 Conularia crustula White 



1880 Conularia crustula. Whits, Cont. to Pal, No. 8, p. 170, PI. 42, Fig. 4a. 



Coal Measures: Kansas City, Missouri; near Taos, New Mexico. 

 See also Conularia crustula? Price, W. Va. Geol. Surv., Kanawha County Kept., p. 15, 



PI. II, Figs. 4-8. 



Kanawha Series, Kanawha Black Flint: Queen Shoals, Kanawha County, 



W. Va. 



Description. A single fragment of a large Conularia from the 

 Upper Mercer ore undoubtedly represents the same species as the West 

 Virginia form to which Price referred as C. crustula ?, although the 

 species may not be the same as White's. In surface sculpture and 

 apparently in size the Upper Mercer form agrees closely with the West 

 Virginia species; a portion of Price's discussion of the latter form is 

 quoted below: 



"Our shell shows the following differences from White's descrip- 

 tion: size somewhat larger, in the middle of each side, instead of a 

 furrow, a faint line is seen caused by the slight thickening, the inter- 

 ruption the ends not meeting but passing each other slightly or 

 both the thickening and interruption of the transverse, raised striae; 

 this thickening of the striae is due in most cases to a division of the 

 ribs into two, as may be seen under a magnifier; where the rib is not 

 interrupted the division is represented by a shallow groove in the center 

 of the rib; one specimen has its ribs interrupted twice on one side for 

 a portion of its length; thickening without interruption, interruption 

 and division of the interrupted ends of the striae may all occur on 

 different portions of the same side of the shell; no crenulations are 

 observable on the striae, but the imperfect state of preservation of the 

 material may account for their absence; irregular longitudinal wrinkles 

 are seen on some specimens between the ribs. The shell is thin. It 

 is not thought that the above points of difference between our shell 

 and White's are of specific value." 



Another fragment of a small Conularia from the Lower Mercer 

 limestone agrees closely with the published figures of White's species, 

 especially in size, so that the identification is made with considerably 

 more confidence. 



Horizon and locality. Lower Mercer limestone: Licking County, 

 Flint Ridge, Locality 47, r. Upper Mercer ore: Scioto County, Lo- 

 cality 59, r. 



10 G. B. 25 



