UNIVEESiry OF CAIilFOENIA PXJBLICATIONS 



Note. — The University of California Publications are offered in exchange for the publi- 

 cations of learned societies and institutions, imiversities, and libraries. Complete lists of 

 aU the publications of the University will be sent upon request. For sample copies, lists 

 of publications or other information, address the MANAGER OF THE UNIVERSITY 

 PEESS, BEEKELEY, CAIilFOENIA, U. S. A. AU matter sent in exchange should be 

 addressed to THE EXCHANGE DEPAETMENT, UNIVERSITY LIBEARY, BERKELEY, 

 CALIFORNIA, U.S.A. 



"WILLIAM "WESLEY & SONS, LONDON 



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



Physiology, and Zoology. 



ZOOLOGY. — 0. A. Kofoid, S. J. Holmes, and J. GrinneU, 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, 

 CaJifomia, and from the CaUfomla 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, 1904r-1906, xvil + 382 pages, \rith 19 plates _ _ $3.50 



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



Volume 4, 1907-1908, 400 pages, with 24 plates .._ $3.60 



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



Volume 6, 1908-1911, 478 pages, with 48 plates ..._ _ _ _ _ $3.50 



Volume 7, 1910-1912, 446 pages, with 12 plates _ _ $3.60 



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



Volume 9, 1911-1912, 365 pages, with 24 plates ..._ _ _ _ _ _... $3.60 



Volume 10, 1912-1913, 417 pages, with 10 plates _ _ _ _ _ _ _. $3.60 



Volume 11, 1912-1914, 638 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, 645 pages, with 24 plates ..._ _ _ _. $5.00 



Volume 18, 1917-1919, 529 pages, with 20 plates „ _ $6.00 



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



1917 .._ -. 36 



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. 46-60, plates 2-3. October, 1917 .20 



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



berg. Pp. 61-74, plates 4-5. October, 1917 ..._ _ _ .16 



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



convivus St&l, by Irene McCulloch. Pp. 75-88, 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 _ 16 



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 _ _ _ .86 



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 Beptanchus maculatus, by Plrie Davidson. Pp. 151-170, 



12 figures in text. March, 1918 ..._ _ _ _ _ _.._ _. .25 



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



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 EUis L. Michael. Pp. 239-298, —^ 

 plates 9-11, 1 figure In text. March, 1918 .66 



