EXPLANATION OF PLATE 39 

 All figures natural size 

 Fig. 1. Scutella gabbi Eemond. Basal beds of the San Pablo group. Speci- 

 men no. 11001. 



Fig. 2. Scutella gabbi Eemond (large form). Basal beds of San Pablo group. 

 Specimen no. 11002. 



Fig. 3. Scutella gabbi Eemond {notched form). Upper San Pablo group. 

 Specimen no. 11007. 



Fig. 4. Scutella gabbi, n. var. tenuis. Lower San Pablo group. Type speci- 

 men, no. 11005. 



Fig. 5a. Astrodapsis tumidus, n. subsp. cierboensis. Lower San Pablo group. 

 Type specimen, no. 10061. 



Fig. 5b. Astrodapsis tumidus, n. subsp. cierboensis. Outline of longitudinal 

 section. Type specimen, no. 10061. 



Fig. 6a. Scutella pabloensis, n. sp. Lower San Pablo group. Type specimen, 

 no. 10063. 



Fig. 6b. Scutella pabloensis, n. sp. Outline of longitudinal section. Type 

 specimen, no. 10063. 



Fig. 7a. Astrodapsis tumidus Eemond. Abactinal surface. Upper San Pablo 

 group. Specimen no. 11008. 



Fig. lb. Astrodapsis tumidus Eemond. Actinal surface. Sj^ecimen no. 11008. 



Fig. 7c. Astrodapsis tumidus Eemond. Outline of longitudinal section. Speci- 

 men no. 11008. 



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