XTNIVEESITY OF CALIFORNIA PUBLICATIONS— (Continued) 



16. Revision of the Rodent Genus Aplodontia, Tjy Walter P. Taylor. Pp. 435- 



504, plates 25-29, 16 figures In text. May, 1918 _ _ .76 



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



SIS, 3 figures in text. May, 1918 15 



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



the Habits of the Animal, by Charles Lewis Camp. Pp. 517-538, 6 figures 



in text. June, 1918 20 



Index, pp. 537-545. 

 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 

 S. Description of Some New Species of Poljfnoldae 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 Essen- 



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



5. Crithidia euryophthalmi, sp. nov., from the Hemipteran Bug, Euryophthalmus 



convivus St3,l, by Irene McCuiloch. Pp. 75-88, 35 figures in text. Decem- 

 ber, 1917 15 



6. Cn the Orientation of Erythropfif;, 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 tho 



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 Heptaiii-hun macuhitus, by Pirie Davidson. Pp. 15H70, 



12 figures in text. March, 1918 _ 25 



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



Cocst 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 Snipa democratica 



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

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



13. A Quantitative Analysis of the MoUuscan 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 F.uplotes patella, by Harry B. Yocom. Pp. 



337-396, plates 14-16. September, 1913 70 



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



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



16. The Subclavian Vein and Its Relations in Elasmobranch Fishes, by J. Frank 



Daniel. Pp. 479-4S4. 2 figures in text. August, 1918 10 



17. The Cercaria of the Japanese Blood Fluke, Schistosoma iaponicum Katsn- 



rada. by WiUIam W. Cort. Pp. 485-507, 3 figures In text. 



18. Notes on the Eggs and Miracidia of the Human Schistosomes, by WiUlam 



W. Cort. Pp. 509-519, 7 figures in text. 



Nos. 17 and 18 In one cover. January, 1919 . _... .35 



Index, pp. 521-529. 

 Vol. 19. 1. Reaction of Various Plankton Animals with Reference to Their Diurnal 



Migrations, by Calvin O. Esterly. Pp. 1-83. April, 1919 ..._ 85 



2. The Pteropod Desmopterus paciftcus (sp. nov.), by Christine Essenberg. Pp. 



85-88, 2 figures In text. May, 1919 _ .05 



3. Studies on Giardia microti, by William C. Boeck. Pp. 85-136, plate 1, 19 



figures in text. April, 1919 _ _ _..... 60 



4. A Comparison of the Life Cycle of Crithidia with that of Trypanosoma in 



the Invertebrate Host, by Irene McCuiloch. Pp. 135-190, plates 2-6, 3 

 figures in text. October, 1919 60 



5. A Muscid Larva of the San Francisco Bay Region Which Sucks the Blood 



of Nestling Birds, by O. E. Plath. Pp. 191-200. February, 1919 10 



6. Binary Fission in CoUodictyon triciliatum Carter, by Robert Clinton Rhodes. 



Pp. 201-274, plates 7-14, 4 figures in text. December, 1919 ..._ $1.00 



7. The Excretory System of a Stylet Cercaria, by William W. Cort. Pp. 275- 



281, 1 figure in text. August, 1919 _ _ 10 



8. A New Distome from Hana aurora, by WiUlam W. Cort. Pp. 283-293, 5 



figures in text. November, 1919 20 



9. The Occurrence of a Rock-boring Isopod along the Shore of San Francisco 



Bay, California, by Albert L. Barrows. Pp. 299-316, plates 15-17. De- 

 cember, 1919 26 



10. A New Morphological Interpretation of the Structure of Noctiiuca. and Its 



Bearing on the Status of the Cystoflagellata (Haeckel), by Charles A, 

 Kofoid. Pp. 317-334, plate 18, 2 figures in text. February, 1920 25 



11. The Life Cycle of Echincstoma revohitum (Froellch), by John 0. Johnson. 



Pp. 338-388, plates 19-25, 1 figure In text. May, 1920 60 



