OF WEST COAST MOLLUSCA. 11 



172 Mytilus Californianus Conr. 



Str. Fuca to San Diego Q. Charlotte's I. 



173 Mytilus edulis Linn. 

 Monterey, north Japan ; N. Atlantic. 



174 Mytilus edulis var. glomeratus Old. 

 S. F. Bay, on algae deformed ? 



175 Septifer bifurcatus Rve. [Conr.) 

 Farallone Is. to San Diego. (Not Myt. bifurc. 



176 Modiola capax Conr. 



S. Barbara to S. Diego Lower Cal. and Mex. 



177 Modiola modiolus Linn. 

 Monterey, north Asia ; N. Atlantic. 



178 Modiola fornicata Cpr. 

 Monterey to San Pedro. 



179 Modiola recta Conr. 



Santa Cruz to San Diego. 



180 Modiola recta var. flabellata Old. 

 Str. of Fuca. 



181 Adula falcata Old. 



San Francisco to San Diego New Zealand ? 



182 Adula stylina Cpr. 

 Str. Fuca to Monterey. 



183 Lithophagus plumula Hani. 

 Monterey to S. Diego Mexico to Panama. 



184 Lithophagus attenuatus Desk. 

 Monterey, south ? Lower Cal. to S. America. 



185 Modiolaria Isevigata Gray. 

 Str. Fuca Japan ; N. Atlantic. 



186 Modiolaria marmorata Fbs. 

 Str. Fuca Europe. 



187 Crenella decussata Mont. 

 Catalina I. 1040 fms. North Europe. 



188 Barbatia gradata Sby. 



S. Barbara to S. Diego Japan ; Mex. and S. A. 



189 Axinaea intermedia Brod. ? 

 Monterey to San Diego South America. 



190 Axinaea septentrionalis Midd. 

 Sitka to Aliaska; " Ukamok I." lat. 64. 



191 Axinaea subobsoleta Cpr. 



Str. Fuca to Farallone Is. (=septent. var ?) 



192 Nucula tenuis Mont. 



Str. Fuca to S. Barbara Japan ; N. Atlantic. 



193 Acila castrensis Hinds. 

 Str. Fuca to San Diego Sitka. 



