1904.] NATURAL SCIENCES OF PHILADELPHIA. 



Plate XL, Figs. 12, 13.— Ostrea circumpida Pils. 



Figs. 14, 15. — Cardium hungerfordi undatopictum Pils 

 Figs. 16, 17, 18, l^.—Arca kobeltiana Pils. 

 Fig. 20. — Cardium annce Pils. 

 Fig. 21. — Area ocellata Reeve. 



Plate XLI, Figs. 1, 2.—Chione hizenensis Pils. 

 Fig. 3. — Tellina hirasei Pils. 

 Figs. 4, 5. — Chione micra Pils. 

 Fig. 6. — Soletellina vitrea japonica Pils 

 Figs. 7, 8, 9, lO.—Myodora reevcana Smith. 

 Figs. 11, 12.— Tellina fabrefada Pils. 

 Figs. 13, 14.— Cardium hungerfordi stigmaticum Pils 

 :tigs. 15, IQ.—Codakia bella delicahda Pils. 

 I'lg. 17. — Cardium hungerfordi Sowb 

 Figs. 18, 19, 20.— Kellia porculus Pils. 

 Fig. 21. — Kellia japonica Pils. 



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