4 Tun. 
VI. TUNICATA. 
II. SUBJECT-INDEX. 
a. Anatomy, Physiology and General. 
Account of .structure of Tunicata continued, Seeliger (22). 
Tunicata ; treated generally, in elementary text-book, Shipley & 
MacBride (26). 
Anatomy of Rhizomolgula , Ritter (20) pp. 232-237. 
Circulation and pulsation in Ralpae , Schultze (21). 
Histology of the branchiae and alimentary canal in Ascidians, Vignon 
( 30 ). 
Cytology of Epithelium, Vignon (29). 
Structure of excretory organs in various forms, Dahlgrun (5 & 6). 
Renal organ of Heliosalpa virgula , Todara (28). 
Origin and transmission of pigment, Pizon (17). 
Coloration, M’Intosh (16). 
Modes of origin of colonies of Diplosomci listeri , Della Valle (7). 
Social condition, Ritter (19). 
Collections, British Museum, Smith, Bell & Kirkpatrick (26a). 
b. Embryology. 
Oogenesis of Molgula , Crampton (4). 
Maturation of the egg and fertilization, Julin (13). 
Development of heart, pericardium and epicardium in Ciona intestinalis , 
Selys-Longchamps (23). 
Development of the branchiae in Corella , Selys-Longchamps (24). 
c. Geographical Distribution. 
Migration of Ciona intestinalis , Della Valle (7). 
Norway, Bergen, 4 n. spp., Hartmey"ER (11). 
Clyde Area, list of spp., Elliot, Laurie & Murdoch (8). 
Exe Estuary, Allen (1). 
Normandy, 5 marine spp., Gadeau de Kerville (9). 
Austria, Summary of work from 1850-1900, Sturany (27). 
Gulf of Triest, Cori & Steuer (3). 
Mediterranean, Red Sea, Dead Sea, Caribbean Sea, E. China Sea, dis¬ 
tribution of genus Rhodosoma , p. 164, Hartmeyer (10). 
Alaska, 11 n. spp., 1 n. g., Ritter (20). 
Eastern Canada, Catalogue, Whiteaves (31). 
Maine, list of Tunicata from Cosca Bay, Kingsley (14). 
Antarctic, abysmal, Shipley (25). 
III. SYSTEMATIC. 
Systematic position of genera discussed, Michaelsen, Zool. Anz. xxv, 
pp. 3-6. 
Catalogue of forms from Eastern Canada, Whiteaves, Geol. Surv. Canada 
1901, pp. 265-271. 
Summary of work in Austria from 1850-1900, Sturany, Festschr. Ges. 
Wien, p. 406. 
