Contents of Volume XLIX 



No. i. JULY, 1925. 



Twenty -seventh Annual Report of the Marine Biological 



Laboratory I 



SNYDER, CHARLES D. Egg-Volume and Fertilization Mem- 

 brane 54 



PEARCY, J. FRANK, AND KOPPANYI, T. The Effects of Dis- 

 location of the Eye upon the Orientation and Equilibrium 

 of the Goldfish (Carassius auratus] 61 



No. 2. AUGUST, 1925. 



ANDREWS, JUSTIN M. Morphology and Mitosis in Tricho- 

 monas termopsidis, an Intestinal Flagellate of the Termite, 

 Termopsis 69 



NELSON, THURLOW C. Recent Contributions to the Knowledge 



of the Crystalline Style of Lamellibranchs 86 



LILLIE, RALPH S., AND CATTELL, WARE. The Conditions 

 of Activation of Unfertilized Starfish Eggs by the Electric 

 Current 100 



NEWMAN, H. H. An Experimental Analysis of Asymmetry 



in the Starfish, Patiria miniata 1 1 1 



No. 3. SEPTEMBER, 1925. 

 WHEELER, WILLIAM MORTON. The Finding of the Queen of 



the Army Ant, Eciton hamatum Fabricius 139 



WHEELER, WILLIAM MORTON. A New Guest-Ant and Other 



New Formicidx from. Barro Colorado Island, Panama. . 150 



WILDER, H. H. Palm and Sole Studies 182 



KATER, J. McA. Morphology and Life History of Poly- 



tomella citri sp. nov 213 



No. 4. OCTOBER, 1925. 

 KEPNER, WM. A., AND PICKENS, A. L. Trichodina steinii 



(C. and L.) from Planaria polychora (0. Schm.} 237 



in 



