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Note. — Tlie University of California Publications are offered in excliange for the publi- 

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 ail the publications of tbe 'University -wlU be sent upon request. For sample copies, list* 

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 PEESS, BEEKELEY, CAMFOENXA., U. S. A. All matter sent in exchange should bt 

 addressed to THE EXCHANGE DEPAETMENT, XJNIVEESITY UBEARY, BEEKELEY 

 OAIilFOENIA, V. 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 Eesearch, at La Jolla, 

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



Cited as Univ. CaJif. Publ. Zool. 



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



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



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



Volume i, 1907-1908, 400 pages, with 24 plates „ „ _ _ $3.50 



Volume 5, 1908-1910, 440 pages, with 34 plates ..._ _ _ „ _. $3.60 



Volume 6, 1908-1911, 478 pages, with 48 plates ..._ _ _ _ _. $3.60 



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



Volume 8, 1911, 357 pages, with 25 plates _ _ _ _ _ $3.60 



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



Volume 10, 1912-1913, 417 pages, with 10 plates .„ 1 _ _. $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 WUliam C. Boeck. Pp. 1-26, plate 1. October, 

 1917 _ 



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

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



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

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



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

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



6. Crithidia euryophthalmi, sp. nov., from the Hemlpteran Bug, Euryophthalmut 

 convivus StU, by Irene McCuUoch. Pp. 76-88, 35 figures in text, Decem- 

 ber, 1917 _ _ .16 



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



Swezy. Pp. 89-102, 12 figures in text. December, 1917 ..._ _ 10 



7. The Transmission of Nervoiu Impulses In Eolation to Iiocomotion 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 Bapid Method for the Detection of Protozoan Cysts In Mammalian 



Faeces, by William C. Boeck. Pp. 145-149. December, 1917 ..._ .06 



10. The Musculature of Eeptanckus maculatus, by Ptrie Davidson. Pp. 151-170, 



12 figvires in text. March, 1918 _ _ _ _ _ _. .26 



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 



Eelatlve to the Temperature of the Sea, by Ellis L. Micluiel. Pp. 239-298, 

 plates 9-11, 1 figure in text. March, 1918 .86 



