PORMATIONS AND FOSSILS OF SOUTH MAN-CHTJRIA 57 



fleeted backward, and comparatively large umbilicus, are features 

 that may be pointed out as common to the specimens from both 

 regions. 



This species, however, is not a Liospira^ since it has the concave 

 band situated entirely upon the sloping upper side of the volutions, 

 which is a characteristic feature and the prominent generic charac- 

 ter of Eotomaria. 



Formation and locality. — Lower Ordovician, Kangyao formation : 

 In the black banded limestones near Shang-kang-yao, 3 miles south 

 of the Yen-tai colliery, Liao-tung. 



Plesiotyfes.—V.^:kM.. No. 83661. 



EOTOMARIA ULRICHI, new species 



Plate 30, Figfuees 1-6 



Description. — Shell rather small, about 13 mm wide, 12 mm high, 

 depressed conical above the angular periphery, lower part being 

 first slightly- concave, next ventricose; apical angle about 115°. 

 Volutions four or five, the outer two-thirds or three-fourths of the 

 upper slope of whorls being decidedly concave, the remaining fourth 

 next the suture convex. 



Upper carina of the last whorl has a prominent supraperipheral 

 position to the band of the preceding whorl. Umbilicus equaling 

 nearly one-third the width of the shell. Lines of growth are very 

 fine on the upper surface and curve moderately backward to the 

 peripheral band, while beneath it they first curve slightly forward 

 then turn backward and finally forward again' as they descend into 

 the umbilicus. 



Comparison. — This species differs from the other species of Eoto- 

 maria in its larger apical angle, more ventricose condition of the 

 last whorl and the supraperipheral position of the upper carina of 

 the last whorl compared to the band of the preceding whorl. 



Formation and locality. — Same as preceding species. 



Eolotype.—TJ.^.'^.'K. No. 83662, 



Genus HORMOTOMA Salter, 1859 



HOKMOTOMA PAGODAI, new species 



Plate 12, Figtjees 1, 2 



Description. — Only three casts of the interior are known. As a 

 whole this gastropod is elongate and slender. In the incomplete 

 holotype seven whorls are left after the apical end was broken away. 

 Height of the type, which is a medium-sized specimen, 33 mm ; apical 

 angle, about 25°. Surface marked by a feeble angulation suggesting 



