52 PKOCEEDINGS OF THE CALIFORNIA 



20. Goniobasis occata, Hds. Six young ones — none over half an inch long — 

 are beautifully and strongly sculptured, with the apices perfect, (Ward). Others 

 an inch or more long, and often perfect at tip, show that it is common living, 

 on Marsh's ranch ; but these were collected in the preceding dry season, (Rwl.) 



21. Valvata virens Tryon. A few good-sized specimens, 



22. Bythinella? intermedia Tryon. Two specimens, differing only iif paler 

 green color. The types from Southern Oregon were described as " Pomatiop- 

 sis ; " but the animal is yet unknown. 



23. Fluminicola Nuttalliana Lea. Two small ones only, though it is the 

 commonest species northward. 



24. F. virens Lea. A few sjDecimens agree with description except in smaller 

 size. 



25. F. nuclea Lea. Many small brownish specimens, chiefly from a duck's 

 stomach, are more elongated than virens, with one more whorl when perfect, 

 and differ in color. 



26. Sphaerium patella Gld. Rare, only three having been sent, one of which 

 is stated by Prime to be intermediate, between S. patella, and nobile Gld. The 

 former name has priority if they prove to be one. 



27. Pisidium occidentale Nerve. Rare, and of normal form. 



28. Anodouta augulata Lea. Rare, or not easily obtained. 



29. A. Nuttalliana Lea. Not rare, and large at Antioch, (Dunn). 



30. A Wahlamateusis Lea. Not rare, and everywhere the most numerous 

 species in California. 



A discussion followed on the subject of acclimatization of foreign 

 animals and plants in California. 



Dr. Gibbons made some suggestions with regard to the possibility 

 of acclimatizing on our coast some of the best Eastern market fish ; 

 shad, for example, and other species not now existing here. Col- 

 lecting eggs of fishes, and their distribution without cost, he said, had 

 been inaugurated in the Atlantic States, and supplies could be ob- 

 tained by railroad. 



Dr. Blake said there was no country in the Avorld where an ac 

 climatization society would be so useful as in California. 



Mr. Bolander stated (in reply to Mr. Carlton) that a company 

 had been formed in San Francisco to introduce the shad in Califor- 

 nia. Among agricultural products worthy of naturalization the 

 Ramie of China, (^Boehmeria nivea) and New Zealand flax, (^PJior- 

 mium tenax) for paper making, were considered by him well 

 adapted for the extensive " tule " lands of the interior. He spoke 

 of the large size attained by seeds of most cultivated plants in 

 this State, indicating uncommonly favorable conditions for growth. 



