1 7 ] 



29. Remarks on the Nudibranchiate, or Naked-gilled 

 Mollusks. 



California Horticulturist, July, 1873. 



30. Aboriginal Shell Money. 



Proceed. Cal. Acad. Sciences, July 7, 1873, with plate. 

 [Also separately, 8 pp., 8vo. and plate.] 



31. Shells collected at San Juanico, Lower Califor- 

 nia, by William M. Gabb. 



Proceed. Cal. Acad. Sciences, July 21, 1873. 



32. Shells collected at Loreto, Lower California, by 

 W. M. Gabb, in February, 18G7. 



Proceed. Cal. Acad. Sciences, July 21, 1873. 

 [Numbers 31 and 32, also separately.] 



33. Aboriginal Shell Money. 



Overland Monthly (.San Francisco), Sejjt., 1873, with figures. 

 [Also separately, 10 pp., 8vo.] 



34. Remarks on a New Alcyonoid Polyp, from Biir- 

 rard's Inlet. 



Proceed. Cal. Acad. Sciences, Feb. 3, 1873. 

 [Also separately, 8 pp.] 



35. Descriptions of New Marine Shells, from the 

 West Coast of Florida. 



Proceed. Acad. Nat. Sciences of Philadelphia, July 22, 1873, with figures. 



36. Description of a new species of Alcyonoid Polyp. 



Mining and Scientific Press (San Francisco), August 9, 1873; also sepa- 

 rately. 



37. Description of a New Genus and species of Al- 

 cyonoid Polyp. 



Proceed. Cal. Acad. Sciences, August 18, 1873 ; also separately. 



