PLATE III. 



Fig. 1. Lyuuicca cnbciisis bulimoidcs. Lea, (x V2), Berke- 

 ley, Cal.. p. 309. 



Fig. 2. Lymiicca cubensis var. cockerelli, Pilsbry, (x 7.), 

 Lake on Cinder Cone, Stisanville Road, Lassen National Forest, 

 Cal. p. 309. 



Fig. 3. Lymncea cubensis var. bryanti, Baker, (x V2), Bards- 

 dale, Santa Clara River Valley. Cal, p. 309. 



Fig. 4. Lymucca cubensis. Pfeiffcr, (x 7^). Bardsdale, Cal, 

 p. 308. 



Fig. 5. Lymncra cubensis var. sonomuensis, Pilsbry, (x 7-'). 

 (immature specimen) near Paine's Creek, Rockv Plains, Cal. 

 p. 309. 



Fig. 6. Lynincca cubensis var. sancti-joseplii, Hannibal, 

 (x73) (type), Artesian Belt, near San Jose, Cal, p. 309. 



Fig. 7. Lymncea obnisso, Say, (x 72), Wrights, Santa Cruz 

 Mts., Cal, p. 308. 



Fig. 8. rivipara nialleatus. Reeve, (x 1), Artesian Belt, 

 Cal, p. 317. 



Fig. 9. Goniobasis piicifera. Lea, (physiological form called 

 G. acufifijosa) (x 1), Springs, upper Willow Creek, near Eagle 

 Lake. Cal. p. 313. 



Fig. 10. Goniobasis piicifera. Lea. (normal form) (x 1). 

 Paine's Creek. Rocky Plains, Cal, p. 313. 



Fig. 11. Pahtdestrina longinqua, Gould, (x2), old gold 

 mines, Cuyamaca Mts., Cal, p. 314. 



Fig. 12. Fluinnicola setninalis. Hinds, (x 1), Klamath River. 

 Keno. Ore., p. 315. 



Fig. 13. Aninicola inicrococcus, Pilsbry, (x 2). Fletcher's 

 Spring, near Goose Lake, Cal, p. 314. 



Fig. 14. 15. Pahidestrina profea. Gould, (X 2) (Fig. 14 

 normal), Indio. Colorado Desert, Cal. p. 315. 



Fig. 16. Physa heterostioplia osculans. Hald. (physiologi- 

 cal form called P. hunierosa) (x 1). Indio. Colorado Desert, 

 Cal, p. 312. 



Fig. 17. Physa lieterostropha osculans. Hald. (normal 

 form) (x 1) ditches. Artesian Belt, near San Jose, Cal, p. 312. 



Fig. 18. Physa heterostropha osculans. Hald., (lake form) 

 (x 1), Ontario, Cal. p. 312. 



