UNIVEESITY OF CALIFORNIA PUBLICATIONS— (Continued) 



8. Oatoologlcal EelationsWps of Three Species of Beavers, by F. Harvey 



Eolden. Pp. 75-114, plates 5-12, 18 text figures. March, 1917 _.. ,40 



9. Notes on the Systematic Status of the Toads and Frogs of California, by 



Cliarles Lewis Camp. Pp. 115-125, 3 text figures. February, 1917 10 



10. A Distributional List of the Amphibians and KeptUes of California, by 



Joseph Grinnell and Charles Lewis Camp. Pp. 127-208, 14 figures in text. 

 July, 1917 -.- _ _ _ - _ .86 



11. A Study of the Races of the White-Fronted Goose {Anser aibifrons) Occur- 



ring in California, by H. S. Swarth and Harold 0. Bryant. Pp. 209 222, 



2 figures in text, plate 13. October, 1917 _ „ 15 



12. A Synopsis of the Bats of California, by Hilda Wood GrlnnelL Pp. 223-404, 



plates 14-24, 24 text figures. January 31, 1918 _ „ _. 2.00 



13. The Pacific Coast Jays of the Genus Aphelocoma, by H. S. Swarth. Pp. 



405-422, 1 figure in text. February 23, 1918 _ ._ .20 



14. Sis New Mammals from the Mohave Desert and Inyo Regions of CaUf omia, 



by Joseph Grinnell. Pp. 423-430. 



15. Notes on Some Bats from Alaska and British Columbia, by Hilda Wood 



GrinneU. Pp. 431-433. 



Nos. 14 and 15 In one cover. April, 1918 .16 



16. Revision of the Rodent Genus Aplodon Ha, by Walter P. Taylor. Pp. 435- 



604, plates 25-29, 16 test figures. May, 1918 _ .75 



17. The Subspecies of the Mountain Chickadee, by Joseph GrinneU. Pp. 505- 



515, 3 text figures. May, 1918 15 



18. Excavations of Burrows of the Rodent Aplodontia, with Observations on 



the Habits of the Animal, by Charles Lewis Camp. Pp. 517-536, 6 figures 



in text. June, 1918 20 



Index, pp. 537-545. 



VoL 18, 1. Mitosis in Giardia microti, by WiUlam C. Boeck. Pp. 1-26, plate I. Octo- 

 ber, 1917 _ _ „ _ .35 



E. An Unusual Extension of the Distribution of the Shipworm In San Fran- 

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



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



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



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

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



B. Crithidia euryophthalmi, sp. nov., from the Hemipteran Bug, Euryophtlialmus 

 convivus Stai, by Irene McCuUocli. Pp. 75-88, 35 text figures, Decem- 

 ber, 1917 „ _ _ 15 



6. On the Orientation of ErytTiropsis, by Charles Atwood Kofoid and OUve 



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. 



185-144, 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 Heptanchxis 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.... „ 76 



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



Relative to the Temperature of the Sea, by ElUs L. MlchaeL Pp. 239-298, 



plates 9-11, 1 figure In test. March, 1918 _.. .65 



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



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



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



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



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



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



