Fig. 12. Pagodispira dorothca Grabau .' p. 32 



The type specimen, twice enlarged. Machiakou limestone, Tangshan, Chihli. 

 (Holotype, Coll. by Geo. B. Bnrbour, G. S. Ch. Cat, No. 50). 



Fig. 13. Pagodispira dorothca var. laxa Grabau p. 32 



The type specimen twice enlarged. Machiakou limestone, Chao-Kou-Chuang. 

 (Holotype, G. S. Ch. Cat. No. 13). 



Fig. 14. Liuspira barbuuri Grabau p. 33 



14a. Side view of a nearly perfect high-spired form x 2. 



14b. Umbilical view of same, x 2. Machiakou limestone, Tangshan, Chihli. (Cotype, 

 Coll. by G. B. Barbour. G. S. Ch. Cat. No. 42). 



Fig. !">. Liixpira barbouri Grabaii p. 33 



lf>a. Side view of an imperfect low-spired shell, x 2. 



lob. Umbilical view of same x 2. 



15c. Enlargement of part of the final whorl to show lines of growth, peripheral 



band, and marginal notch, x 4. .Machiakou limestone, Tangshan, Chihli. 

 (Cotype, Survey Collection G. S. Ch. Cat. No. 43). 



Fig. 16. Jformotoma doquieri Grabau p. 34 



IGa. The type specimen, enlarged four times. 



1Gb. Two of the whorls still farther enlarged, (x 8). 



Liangchiashan limestone Shih-Mun-Chai region, eastern Chihli. (Holotype, Coll. 

 F. F. Mathieu G. S. Ch. Cat. No. U9). 



Fig. 17. Fuslxplra sp --3. 36 



A natural section in the rock; natural size. Peilint/e limestone, Shih-Mun-Chai, 

 eastern Chihli. Coll. F. F. Mathieu. (G. S. Ch. Cat. No. 90). (This section is 

 weathered to such an extent, that the back of the whorls is shown beyond the 

 umbilicus, giving the shell a sinistral appearance). 



Fig. 18. Fusispira sp P- 36 



A natural section in rock; natural size. Peilintze limestone, Shih-Mun-Chai, 

 eastern Chihli, Coll. F. F. Mathieu. (G. S. Ch. Cat, No. 89). 



lO'.i - 



