KEY TO THE TSOPODS OF THE PACIFIC COAST OF 



NORTH AMERICA, WITH DESCRIPTIONS OF 



TWENTY-TWO NEW SPECIES. 



By Harriet Richardson. 



The isopods of the Pacific coast of North America have claimed the 

 attention of a number of naturalists during the last half of the nine- 

 teenth century. Among the first to contribute to the knowledge of 

 the fauna of that region was Dana. Stimpson also belongs to the 

 earlier part of that period; his work on the Crustacea and Echinoder- 

 mata of the Pacific shores of North America, published in 1857, was 

 the first si)ecial treatise on the forms of that locality. In connection 

 with the work of the later part of the past fifty years, the names of 

 Stuxberg, Lockington, and Harford form one group as contempora- 

 neous workers (1875-7(5), those of Schicedte and Meinert, and Budde- 

 Lund, another group (1883-85), while the publications of Dr. Hansen 

 and Dr. Benedict represent the latest (1898) work on the isopods of 

 that coast. 



The number of species already described is 75, and '22 are added in 

 the present work. These species represent 44 genera and IG families, 

 as shown in the following table: 



LIST OF tribes, FAMILIES, (iENERA, AND SPECIES. 



Page. 



I. ClIELIKKRA 819 



Family I. Tanaid;« 819 



1. Tanais , 819 



1. loricatus Spence 15iite i 819 



2. alascensis, new species 819 



II. Flahellifera. 820 



Family II. Limnoriidje 821 



2. Limnoria 821 



3. lUjnorum (Rathke) 821 



Family III. Cirolanidai 822 



3. Cirolana .--. 822 



4. harfordi (Lockington) 822 



5. linguifrons, new species ... 823 



4. Eurydice 824 



6. caudata, new species 824 



Family IV. Corallanida? 825 



5. ('oralland 825 



7. truncata, new species 825 



Proceedings U. S. National Museum, Vol. XXI— No. 1 1 75. 



815 



