1916] Moody: Fauna of the Fernando of Los Angeles 41 



the collection obtained by Mr. Wat 

 following species: 



Bittium asperum Gahb 

 Calliostoma eostatum Martyn 

 Caneellaria vetusta Gabb 

 Cerithidea californica Hald. 

 Chama exogyra Conr.* 

 Corbula luteola Opr. 

 Crepidula grandis Conr.* 

 Cryptomya californica Conr. 

 Cypricardia pedroana Conr. 

 Diplodonta orbella Old. 

 Glycimeris (Axinaea) intermedia 

 Brod. 



Kellia suborbicularis Mont. 

 Lithophagus plumulus Eve. 

 Macoma inquinata Desh. 

 Maeoma nasuta Conr. 

 Mangilia (Clathurella) conradiana 

 Gabb* 



* Species known also in the Fourth i 



s, Dr. J. G. Cooper identified the 



Maetra (Standella) californica Conr. 



Mitra maura Swains.* 



Murex (Ocinebra) lurida Midd.* 



Nassa californica Conr.* 



Nassa fossata Gld.* 



Nassa mendica Gld.* 



Nassa perpinguis lids.* 



Ostrea vespertina Conr. 



Paphia staleyi Gabb 



Pecten (Janira) bellus Conr. 



Pecten (Hinnites) giganteus Gray* 



Pecten pedroanus Trask 



Plaeunanomia, n.sp. 



Platyodon cancellatus Conr. 



Saxidomus gibbosus Gabb 



Semele decisa Conr. 



Sinum (Sigaretus) planicostum Gabb 



reet fauna. 



In the above list of species ten forms are found which also occur 

 in the Fourth Street fauna. 



During the construction of the Third Street tunnel fossiliferous 

 blue clays were found which yielded several interesting invertebrate 

 species, among which was a giant Lima described by Dr. W. H. Dall 3 

 as L. hamlini. Another form which occasioned some confusion for 

 a time was considered by Dr. R. E. C. Stearns 4 to belong to the 

 Rudistae and was described by him as Radiolites hamlini. Upon the 

 evidence of this species the deposits underlying Los Angeles were 

 referred to the Cretaceous. 5 Later Dr. T. W. Vaughan expressed the 

 opinion that the flat valve of the supposed Radiolites was really an 

 individual coral, while the elongated portion, though still somewhat 

 problematical, is probably to be referred to the Cirripedia. 6 



From a small molluscan fauna in material furnished by Dr. Stearns 

 and Mr. Homer Hamlin, Dr. Dall 7 determined the Third Street tunnel 

 horizon as probably Pliocene, and in 1907 Dr. Ralph Arnold 8 definitely 



3 Dall, W. II., Nautilus, vol. 14, no. 2, pp. 15-16, June, 1900. 

 * Stearns, Dr. E. E. C, Science, n. s. vol. 12, no. 294, pp. 247-250, Aug. 17, 

 1900. 



s Vaughan, T. W., Nautilus, vol. 14, no. 2, p. 36, June, 1900. 



e Dall, W. H., Science, n. s. vol. 15, no. 366, pp. 5-16, Jan. 3, 1902. 



~ Dall, W. H., op. cit. 



s Arnold, E., Proc. U. S. Nat. Mus., vol. 32, p. 527, 1907. 



