20 



Erwin H. Barbour, 



walls (see Figs. 25, 26, Plate V.). The stony walls of this 

 specimen are well shown in Fig. 26, Plate V. The wall varies 

 from \ to i^ inches in thickness. The walls of most speci- 

 mens of the genus resemble in appearance and texture loosely 

 aggregated particles of lime. Here, however, the walls are 

 quite compact and stony. This specimen, together with many 

 fragments which will restore one or two more whorls, was 



Fig. 16. — Daimonelix anaxilis, as seen in the walls of a blowout when nearly quar- 

 ried out. Sketched in the field. 



found weathered out. Examination of the section (Fig. 26) 

 will show the wall, and the greater, and some of the lesser, 

 thick-walled tubes. Tubes run all through the specimen. 

 Not being confined to the surface only, how can it be a 

 burrow .•* 



Daimonelix carinata, gen. et sp. nov. 



This species, which is the tallest, most shapely, and inter- 

 esting of the family, is distinguished by a strong carina, or 

 keel, which runs along the lower edge of the upper coils, and 



320 



