102 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



EXPLANATION OF PLATE 3 



Fig. la. Diplodonta buwaldana, new species. Natural size. Right valve. 

 Lower Miocene of Kern River, California. 



Fig. lb. The same. Type. Natural size. Left valve. Same locality as 

 fig. la. 



Fig. 2. Yoldia newcombi, new species. Type. Natural size. Lower 

 Miocene of Clallam County, California. 



Fig. 3. Yoldia temblorensis, new species. Type. Natural size. Lower 

 Miocene of Kern River, California. 



Fig. 4. Semele morani, new species. Type. Natural size. Lower Mio- 

 cene of San Luis Obispo County, California. 



Fig. 5a. ' Mactra sectoris, new species. Type. Natural size. Lower 

 Miocene of Kern River, California. 



Figs. 5b, 5c, 5d, and 5e. The same. Natural size. Same locality as 

 fig. 5a. 



Fig. 6a. Transennella joaquinensis, new species. Type. X2. Lower 

 Miocene of Kern River, California. 



Figs. 6b and 6c. The same. X2. Same locality as fig. 6a. _ 



Fig. 7a. Poromya gabbiana, new species. Type. Natural size. Ex- 

 terior of right valve. Lower Miocene of eastern San Luis Obispo County, 

 California. 



Fig. 7b. The same. Natural size. Same locality as fig. 7a. 



Fig. 8a. Leda ochsneri, new species. Type. Natural size. Lower Mio- 

 cene of Kern River, California. 



Figs. 8b and 8c. The same. Natural size. Same locality as fig. 8a. 



Fig. 9. Donax triangulata, new species. Type. X2. Lower Miocene 

 of Kern River, California. 



Fig. 10a. Pecten sancti-ludovici, new species. Type. Natural size. 

 Right valve. Middle Miocene of eastern San Luis Obispo County, Cali- 

 fornia. 



Fig. 10b. The same. Natural size. Showing the left valve. Same 

 locality as fig. 10a. 



Fig. 11a. Tellina wilsoni, new species. Type. Natural size. Lower 

 Miocene of eastern San Luis Obispo County, California. 



Fig. lib. The same. Natural size. The same locality as fig. 11a. 



