EXPLANATION OF PLATE 17 



Fauna of Martinez Eocene 

 Fig. 1. Heteroterma gabbi Stanton. X 1. 

 Fig. 2. Actaeon lawsoni Weaver. X 3. 

 Fig. 3. Bullinula subglobosa Weaver, after Weaver. X 2. 



Fig. 4a. Einginella pinguis Gabb. X 2. 



A species found in the middle and lower portions of the Martinez. 



Fig. 4b. Einginella pinguis Gabb. X 2. 

 Fig. 5a. Hercoglossa merriami, n. sp. XI. 



Fig. 5b. Hercoglossa merriami, n. sp. X 1. 



This species may be related to the eastern species Hercoglossa 

 (Enclimatoceras) ulrichi White. 



[178] 



