1921] Schmitt: The Marine Decapod Crustacea of California it 
drawings, are the work of my wife, Alvina S. Schmitt. The photo- 
graphs, from which all plates not otherwise credited were made, are 
the work of Mr. John Howard Paine. 
Although no bibliography in the strict sense has been attempted, 
the literature listed includes not only works cited in the text, but 
also a number of useful papers collaterally consulted. In the con- 
densed synonymy under each species, in addition to the citation of 
the original description, reference is made to all authors from whose 
works plates, figures, or extracts have been taken, and, wherever 
possible, to the three most recent and comprehensive works on Cali- 
fornia Crustacea, a very able paper by Weymouth (1910) on the erabs 
of Monterey Bay, and those landmarks, as it were, of California 
earcinology by Holmes (1900) and Rathbun (1904a). 
From Weymouth I have taken many valuable color notes, several 
figures, and the greater part of his keys to the adult and juvenile 
specimens of the genus Cancer and the genera of the family Inachidae. 
To the works of Holmes and Rathbun, however, my greatest debt 
of gratitude is due, for it is largely from them, as the reader will 
readily see, that the present paper has been compiled. The very 
comprehensive descriptions of Holmes have been freely drawn upon 
for many of the specific characterizations, as well as for the con- 
struction of several otherwise impossible keys for species I have not 
seen or was unable to examine. His excellent illustrations, for the 
greater part, have been reproduced. 
In form and systematic arrangement I follow Miss Rathbun in 
the main, and from her monograph (1904a) the keys and characters 
for the species of Pasiphaea, Pandalus, Spirontocaris, Crago, and 
Callianassa have been taken practically intact. Her classificatory keys 
published in the American Naturalist (1900) were found very useful, 
especially in connection with the genera of the Inachidae and the 
Xanthidae. From her recent monograph on the Grapsoid Crabs of 
America (1918) considerable material relating to the family Pinno- 
theridae has been taken and a number of plates have been reproduced 
(plates 40 to 50 of the present paper). 
Furthermore, to Miss Rathbun personally I owe much for numer- 
ous helpful and valuable suggestions, and for the use of certain of 
her manuscript notes, particularly those dealing with the genera 
Randallia and Pinna. 
Acknowledgments are also due to Aleock, Bouvier, Borradaile, 
Calman, Ortmann, Smith and Weldon, from whose treatises the 
