I02 SMITHSONIAN MISCELLANEOUS OLLECTIONS VOL. 57 



DESCRIPTION OF PLA E 14 



PAGE 



Micromitra (Paterina) lucina Walcott 7S 



Fig. I. Summit view of a ventral valve. < 6. U. S. National 

 Museum, Catalogue No. 57559. 



Lingtilella manchuriensis Walcott 74 



Fig. 2. View of a ventral valve. X 8. U. S. ational Museum, Cata- 

 logue No. 57560. 

 2a. View of a partially exfoliated dors ' valve. X 8. U. S. 

 National Museum, Catalogue No. .-.7561. 



Lingulella marcia Walcott 74 



Fig. 3. View of an exfoliated ventral valve, showing vascular mark- 

 ings and cast of concentric lines of growth. X 8. U. S. 

 National Museum, Catalogue No. 57562. 

 3a. A partially exfoliated dorsal valve, showing vascular mark- 

 ings. X 8. U. S. National Museum, Catalogue No. 57563. 



Acrotreta venia Walcott 75 



Fig. 4. Summit view of a ventral valve. >< 8. U. S. National 

 Museum, Catalogue No. 57564. 

 4a. Anterior portion of a dorsal valve howing median ridge 

 and central muscle scars. X 8. S. National Museum, 



Catalogue No. 57565. 



Orthotheca glabra Walcott 75 



Fig. 5. A partially exfoliated specimen. X 8 U. S. National Museum, 

 Catalogue No. 57566. 

 5a. A minute, slender, broken specimen X 8. U. S. National 

 Museum, Catalogue No. 57567. 



Albertella paciUca Walcott 76 



Fig. 6. Photograph of a fragmentary pygidium. X 2. U. S. National 

 ■Museum, Catalogue No. 57568. 



Stephanocare ? monkei Walcott yy 



Fig. 7. Pygidium doubtfully referred to this genus. X 2. It is asso- 

 ciated with Stephanocare sinensis (Bergeron). U. S. 

 National Museum, Catalogue No. 57601. 



Ptychoparia granosa Walcott " yy 



Fig. 8. Dorsal view of a cranidium. X 3- '• S. National Museum, 

 Catalogue No. 57602. 



