276 PALAEONTOLOGY OF CALIFORNIA. 



KADIATA. 



PYRINA, Desmoul. 

 P. Paeryi, Hall. 



(Pyrina Parryi, Hall; Emory's Rep., p. 144, pi. 1, fig. 1 a-d.) 

 Rare ; but three or four specimens were found. 



CYPHOSOMA, Agas. 



C. Texanum, Roem. 



(Diadema Texana, F. Roem. ; Texas, p. 392.) 



(Cyphosoma Texanum, Roem. ; Kreid. Tex., p. 82, pi. 10, fig. 6.) 



(Id., Hall; Emory's Report, p. 145, pi. 1, fig. 3 a-c.) 



More common than the preceding. 



TURBINOLIA, Lam. 



? T. Texana, Con. 



(Turbinolia Texana, Con. ; Emory's Report, p. 144, pi. 2, fig. 3 a, b.) 

 Very common. 



UNDETERMINED. 



Two or three species of incrusting tubes occur in the collection, perhaps all 

 Serpulidce. They are all, with one exception, so weathered that all distinctive 

 characters are obliterated. The exceptional case is the one of which a somewhat 

 magnified view is given on PI. 36, Fig. 11. It may be aSerpula, or not impossibly 

 one of the Vermetidce. It is closely attached by its lower surface, which is ex- 

 panded laterally into a subsquamose plate ; the upper surface is longitudinally 

 convex, with a slight ridge or offset on each side, and is transversely striate or 

 rugose. The aperture is transversely subelliptical in section. This form is very 

 rare. I have seen but a single specimen. 



