766 CALIFORNIA ACADEMY OF SCIENCES. 



group as no species were formerly known from the re- 

 gion. A large number of new forms have been found. 

 The oligochgetological fauna of the Cape Region is es- 

 sentially a neotropic one, only one or two upper Califor- 

 nia species being found. 

 EiSEN, GusTAv. Anatomical Studies ou New Species of Ocnerodrilns. 



Vol. iii, JiTly 9, 1893. 

 EiSEN, GusTAv. On the Anatomical Structure of Two Species of Kerria. 



Vol. iii, April 15, 1893. 

 EiSEN, GusTAV. Pacific Coast Oligochceta, No. 1. Memoirs of the Califor- 

 nia Academy of Sciences. 1895. 18 plates. 

 EiSEN, GusTAV. Pacific Coast Oligochpeta, No. 2. MS. now in press. 



Land and Fresh Water Mollusca. — The collect- 

 ions were worked up by Dr. J. G. Cooper, who has 

 kindly furnished the following summary. In all, the 

 various expeditions brought home sixty-three species 

 from the peninsula. Of these seventeen were new 

 to science. Of these latter seven were taken by the three 

 first expeditions, the other ten by the last ones. 



Of all the species collected, twenty-nine are found 

 north of the U. S. boundary line, on the peninsula only 

 twenty-eight, east of the Gulf also six. 



Around Mazatlan and Tepic seventeen species were 



found. 



Cooper, J. G. On Land and Fresh Water Shells of Lower California. 



Vol. iii, April 23, 1891. 

 Cooper, J. G. On Land and Fresh Water Mollusca of Lower California, 



No. 2. Vol. iii, October 6, 1892. 

 Cooper, J. G. On Land and Fresh Water Mollusca of Lower California, 



No. 3. Vol. iii, May 5, 1893. 

 Cooper, J. G. On Land and Fresh Water Mollusca of Lower California, 



No. 4. Vol. iv, April 28, 1894. 

 Cooper, J. G. On Land and Fresh Water Shells of Lower California, No. 



5. Vol. V, June S, 1895. 

 Cooper, J. G. On West Mexican Land and Fresh Water Mollusca. Vol. v, 



June 8, 1895. 

 Cooper, J. G. Catalogue of the Land and Fresh Water Mollusca of Lower 



California. Zoe, vol. iii. 



