UNIVERSITY OF CALIFORNIA PUBLICATIONS— (Continued) 



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 pacificns (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 _ _ .60 



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



the Invertebrate Host, by Lene McCulloch. 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 Collodictyon Iriciliatum 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, ?. figure in text. August, 1919 10 



8. A New Distome from Sana aurora, by William W. Cort. Pp. 283-298, 



5 figures in text. November, 1919 20 



9. The Occurrence of a Rock-Boring Isopod along the Shore of San Fran- 



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

 December, 1919 25 



10. A New Morphological Interpretation of the Structure of Noctiluca, 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 Echinostoma revolutum (Froelich), by John C. Johnson. 



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



Vol. 20. 1. Studies on the Parasites of the Termites. I. On Streolomastix strix, a 

 Polymastigote Flagellate with a Linear Plasmodial Phase, by Charles 

 Atwood Kofoid and Olive Swezy. Pp. 1-20, plates 1-2, 1 figure in text. 

 July, 1919 - : 25 



2. Studies on the Parasites of the Termites. II. On Trichomitus termitidis, 



a Polymastigote Flagellate with a Highly Developed Neuromotor System, 

 by Charles Atwood Kofoid and Olive Swezy. Pp. 21-40, plates 3-4, 2 

 figures in text. July, 1919 26 



3. Studies on the Parasites of the Termites, m. On Trichonympha campanula 



Sp. Nov., by Charles Atwood Kofoid and Olive Swezy. Pp. 41-98, plates 

 5-12, 4 figures in text. July, 1919 _ .76 



4. Studies on the Parasites of the Termites. IV. On Leidyopsis sphaerica 

 gen. nov., sp. nov., by Charles Atwood Kofoid and Olive Swezy. Pp. 

 99-116, plates 13-14, 1 figure in text. July, 1919 „_ _ .26 



5. On the Morphology and Mitosis of Chilomastix mesnili (Wenyon), a Common 



Flagellate of the Human Intestine, by Charles A. Kofoid and Olive Swezy. 



Pp. 117-144, plates 15-17, 2 figures in text. April, 1920 35 



6. A Critical Review of the Nomenclature of Human Intestinal Flagellates, 



Cercomonas, Chilomastix, Trichomonas, and Giardia, by Charles A. Kofoid. 



Pp. 145-168, 9 figures in text. June, 1920 35 



VoL 21. 1. A Revision of the Microtus calif ornicus Group of Meadow Mice, by Rem- 

 ington Kellogg. Pp. 1-42, 1 figure in text. December, 1918 _ J50 



2. Five New Five-toed Kangaroo Rats from California, by Joseph GrinneU. 



Pp. 43-47. March, 1919 _ .05 



3. Notes on the Natural History of the Bushy-Tailed Wood Rats of California, 



by Joseph Dixon. Pp. 49-74, plates 1-3, 3 figures in text. December, 1919 .25 



4. Revision of the Avian Genus Passerella, with Special Reference to the Dis- 



tribution and Migration of the Races in California, by H. S. Swarth. 



Pp. 75-224, plates 4-7, 30 figures in text. 1920 1.75 



5. A Study of the California Jumping Mice of the Genus Zapus, by A. Brazier 



Howell. Pp. 225-238, 1 text figure. May, 1920 15 



Vol. 22. 1. A Quantitative and Statistical Study of the Plankton of the San Joaquin 

 River and its Tributaries in and Near Stockton, California, in 1913, 

 by Winfred Emory Allen. Pp. 1-292, plates 1-12, 1 text figure. July, 

 1920 3.00 



