UNIVERSITY OF CALIFORNIA PUBLICATIONS 



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 addressed to THE EXCHANGE DEPARTMENT, UNIVERSITY LIBRARY, BERKELEY. 

 CALIFORNIA, U. S. A. 



WILLIAM WESLEY & SONS, LONDON 

 Agent for the series in American Archaeology and Ethnology, Botany, Geology, 



Physiology, and Zoology. 

 ZOOLOGY. C. A. Kofoid, S. J. Holmes, and J. Grinnell, Editors. 



This series contains the contributions from the Department of Zoology, from the 

 Marine Laboratory of the Scripps Institution for Biological Research, at La Jolla, 

 California, and from the California Museum of Vertebrate Zoology in Berkeley. 



Cited as Univ. Calif. Publ. ZooL 



Volume 1, 1902-1905, 317 pages, with 28 plates $3.50 



Volume 2, 1904-1906, xvii + 382 pages, with 19 plates _ $3.50 



Volume 3, 1906-1907, 383 pages, with 23 plates $3.50 



Volume 4, 1907-1908, 400 pages, with 24 plates $3.50 



Volume 5, 1908-1910, 440 pages, with 34 plates $3.50 



Volume 6, 1908-1911, 478 pages, with 43 plates $3.50 



Volume 7, 1910-1912, 446 pages, with 12 plates $3.50 



Volume 8, 1911, 357 pages, with 25 plates _ $3.50 



Volume 9, 1911-1912, 365 pages, with 24 plates $3.50 



Volume 10, 1912-1913, 417 pages, with 10 plates $3.50 



Volume 11, 1912-1914, 538 pages, with 26 plates $5.00 



Volume 12, 1913-1916, 558 pages, with 22 plates $5.00 



Volume 13, 1914-1916, 529 pages, with 39 plates $5.00 



Volume 14, 1914 1918, 452 pages, with 60 plates _ $5.00 



Volume 15, 1915-1916, 360 pages, with 38 plates _ _ . $4.00 



Volume 16, 1915-1917, 522 pages, with 46 plates _ $5.00 



Volume 17, 1916-1918, 545 pages, with 24 plates $5.00 



Volume 18, 1917-1919, 529 pages, with 20 plates $5.00 



Vol. 18. 1. Mitosis in Giardia microti, by William C. Boeck. Pp. 1-26, plate 1. October, 



1917 35 



2. An Unusual Extension of the Distribution of the Shipworm in San Francisco 



Bay, California, by Albert L. Barrows. Pp. 27-43. December, 1917 .20 



3. Description of Some New Species of Polynoidae from the Coast of Cali- 



fornia, by Christine Essenberg. Pp. 45-60, plates 2-3. October, 1917 20 



4. New Species of Amphinomidae from the Pacific Coast, by Christine Esson- 



berg. Pp. 61-74, plates 4-5. October, 1917 15 



5. Crithidia euryophthalmi, sp. nov., from the Hemipteran Bug, Eury aphtha! mus 



convivus Stal, by Irene McCulloch. Pp. 75-88, 35 figures in text. Decem- 

 ber, 1917 15 



6. On the Orientation of Erytliropsis, by Charles Atwood Kofoid and Olive 



Swezy. Pp. 89-102, 12 figures in text. December, 1917 .15 



7. The Transmission of Nervous Impulses in Relation to Locomotion in the 



Earthworm, by John F. Bovard. Pp. 103-134, 14 figures in text. January, 



1918 35 



8. The Function of the Giant Fibers in Earthworms, by John F. Bovard. Pp. 



135-144, 1 figure in text. January, 1918 10 



9. A Rapid Method for the Detection of Protozoan Cysts in Mammalian 



Faeces, by William C. Boeck. Pp. 145-149. December, 1917 05 



10. The Musculature of Heptanchus maculatus, by Pirie Davidson. Pp. 151-170, 



12 figures in text. March, 1918 25 



11. The Factors Controlling the Distribution of the Polynoidae of the Pacific 



Coast of North America, by Christine Essenberg. Pp. 171-238, plates 6-8, 



2 figures in text. March, 1918 75 



12. Differentials in Behavior of the Two Generations of Salpa democratica 



Relative to the Temperature of the Sea, by Ellis L. Michael. Pp. 239-298, 

 plates 9-11, 1 figure in text. March, 1918 65 



13. A Quantitative Analysis of the Molluscan Fauna of San Francisco Bay, by 



E. L. Packard. Pp. 299-336, plates 12-13, 6 figures in text. April, 1918 40 



14. The Neuromotor Apparatus of Euplotcs patella, by Harry B. Yocom. Pp. 



337-396, plates 14-16. September, 1918 70 



15. The Significance of Skeletal Variations in the Genus Peridinium, by A. L. 



Barrows. Pp. 397-478, plates 17-20, 19 figures in text. June, 1918 90 



