GEOGRAPHICAL CATALOGUE 
Rissoa compacta Cpr. 
Str. Fuca, W. T. 
Rissoa acutelirata Cpr. 
Santa Barbara to San Diego. 
Rissoa? Cooperi 7ryon. 
Monterey or San Diego. (Fresh water ?) 
Rissoa ? exilis 7’ryon. 
Santa Barbara or S. Diego. (Fresh water?) 
Alvania reticulata Cpr. 
Neeah Bay, W. T. 
Alvania filosa Cpr. 
Monterey, (from shell-washings.) 
Fenella pupoidea Cpr. 
Monterey, 20 fms., dead. 
Barleeia subtenuis Cpr. 
Baulines? S. Diego—Mazatlan, Panama ? 
Barleeia subtenuis var? rimata Cpr. 
San Diego. 
Barleeia haliotiphila Cpr. 
Lower Cal.? (‘On H. splendens,” Rui.) 
Amphithalamus inclusus Cpr. 
Santa Barbara to San Diego. 
Amphithalamus? lacunatus Cpr. 
San Pedro. (Palmer coll.) 
Hydrobia? Californica Tryon. 
Oakland to Martinez, Cal. 
Amnicola ? turbiniformis Tryon. 
Northeast California, in streams. 
Amnicola ? longinqua Gid. 
Colorado Desert, (fossil only ?) 
Fluminicola Nuttalliana Zea. 
Willamette River, Oregon, near mouth. 
Fluminicola fusca ald. 
Sacramento R. to Green R., Utah. 
Fluminicola Hindsii Baird. 
Kootanie River, Montana. 
Fluminicola virens Lea. 
Willamette R., Oregon, near mouth. 
Bythinella? intermedia Tryon. 
Owyhee River, Southeast Oregon. 
Bythinella Binneyi Tryon. 
Near Baulines Bay, Cal. 
Cochliopa Rowellii Zryon. 
Clear Lake, California. 
