TERTIARY FOSSILS. 123 



OSTREA, Linn. O. subjecta, Con. 



Ostrea subjecta, Con. ; P. R. R. Rep., Vol. 7, p. 193, pi. 2, fig. 3. 

 Sierra Monica, Miocene ? 



O. Panzana, Con. 



Ostrea Panzana, Con. ; P. R. R. Rep., Vol. 7, p. 193, pi. 2, fig. 4. 

 Panza Valley and Estrella, Miocene. 



TEREBRATULA, Llhyd. ? T. nitens, Con. 



Terebratula nitens, Con. ; Wilkes's Exped., p. 720, pi. 19, fig. 1. 

 Rliynconella nitens, Con. ; Jour. Conch., 1805, p. 154. 

 Miocene, Astoria. 



RADIATA. 



GALERITES. G. Oregonensis, Dana. 



Galerites Oregonensis, Dana; Wilkes's Exped., p. 729, pi. 21, fig. 5, 6. 

 Miocene, Oregon. 



ADDITIONS AND C01UIECTI0NS. 



Since the preceding pages were stereotyped, the following additions and correc- 

 tions have been obtained from my friends Messrs. Tryon and Stearns, who have 

 examined the proof sheets. I have also detected two or three omissions, which are 

 here corrected. 



Trophon squamulifer, Cpr. Found by Mr. Stearns, living at Monterey and 

 Catalina Island ; common. 



Neptunea lirata, Mart., Alaska; a large series has been compared by Stearns 

 and Morse with N. decemcostata, and they consider them identical ; circumboreal. 



Margarita salmonea, Cpr. " Is not worth a variety distinction from picpilla." 

 (Stearns.) 



Clypidella bimaculata, Dall. Is now considered by Stearns and Carpenter, to 

 be identical with callomarginata, after a comparison of a large suite of shells and 

 animals. 



