EXPLANATION OF PLATE 40 



All figures natural size 



Fig. 1«. Astrodapsis tumidus Eemond (small thick form). Upper San Pablo 

 group. Specimen no. 11006. 



Fig. 15. Astrodapsis tumidus Eemond (small thick form). Outline of longi- 

 tudinal section. Specimen no. 11006. 



Fig. 2. Astrodapsis tumidus Eemond (large form). Uppermost San Pablo 

 group. Specimen no. 11003. 



Fig. 3a. Astrodapsis altus, n. sp. Upper San Pablo group. Type specimen, 

 no. 10065. 



Fig. 36. Astrodapsis altus. n. sp. Outline of longitudinal section. Type speci- 

 men, no. 10065. 



Fig. 4. Astrodapsis whitueyi Eemond. Upper San Pablo group. Specimen 

 no. 11004. 



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