PROCEEDINGS 



Fourth Series 



VOLUME I 



Expedition of the California Academy of Sciences to the 

 Galapagos Islands, 1905-1906. 



Pages 1-6. I. Preliminary Description of Four New Races of 



Gigantic Land Tortoises from the Galapagos Islands. By John 



Van Denburgh. (Issued December 20, 1901) % .25 



Pages 7-288. II. A Botanical Survey of the Galapagos Islands. 



By Alban Stewart. Plates i-xix. (Issued January 20, 19 J/). . . 1.75 

 Pages 289-3^2. III. The Butterflies and Hawk-Moths of the 



Galapagos Islands. By Francis X. Williams. Plates xx-xxi. 



( Issued October 7, 1911) 50 



Pages 323-374. IV. The Snakes of the Galapagos Islands. By 



John Van Denburgh. F\7itesxxii-xxx. (Issued fafmary 17, 1912) .5 

 Pages 375-404. V. Notes on the Botany of Cocos Island. By 



Alban Stewart. Plates xxxi-xxxiv. (Issued /anuary 19, 1912) .35 

 Pages 405-430. VI. The Geckos of tlie Galapagos Archipelago. 



By John Van Denburgh. ( Issited April 16, 1912) 35 



Pages 431-446. VII. Notes on the Lichens of the Galapagos 



Islands By Alban Stewart. (Issued December 17, 1912) .25 



VOLUME II, Part I 



Expedition of the California Academy of Sciences to the 

 Galapagos Islands, 1905-1906. 



Pages 1-132. VIII. The Birds of the Galapagos Islands, witl> 

 Observations on the Birds of Cocos and Clipperton Islands 

 (Columbiformes to Pelecaniformes). By Edward Winslow 

 Gififord. Plates i-vii. (Issued August 11, 1913) $1.00 



Pages 133-202. IX. The Galapagoan Lizards of the Genus 

 Tropidurus; with Notes on the Iguanas of the Genera 

 Conolophus and Amblyrhyncus. By John Van Denburgh and 

 Joseph R. Slevin. Plates viii-xi. (Issued September 19, 1913), .50 



Pages 203- .374. X. The Gigantic Land Tortoises of the Galapagos 

 Arciiipelago. Bv John Van Denburgh. Plates xii-cxxiv. 

 (Issued September 30, 1914) 2 .00 



Pages 375-382. XI. Preliminary Descriptions of New Species of 

 Pulmonata of the Galapagos Islands. By William Healey Dall. 

 (Issued December 31. 1917) 10 



VOLUME II, Part II 



Pages 1-187. XII. A Review of the Albatrosses, Petrels, and 

 Diving Petrels. By Leverett Mills Loomis. Plates 1-17. 



(Isstied April 22, 1918) 1 .50 



Pages 189-258. XIII. Field Notes on the Land Birds of the 

 Galapagos Islands and of Cocos Island, Costa Rica. By Edward 



Winslow Gifford. (Issued June 16, 1919) 50 



Pages259-310. XIV. The Ants of the Galapagos Islands. ByWilliam 

 Morton Wheeler. (Issued June 16, 1919). 

 XV. The Ants of Cocos Island. By William 

 Morton Wheeler. (Issued June 16, 1919.) 

 XVI. A New Species of the Hymenopterous 

 Genus Scleroderma from the Galapagos 

 Islands. By Charles T. Brues. (Issued 

 June 16, 1919) Price for the three papers .25 



