HEMICHORDA. 
Verm. 71 
General Biology. 
General anatomy, development and distribution, Willey (463). 
General anatomy and classification, Fowler (131). 
Anatomy and histology of Cephalodiscus dodecalophus , Masterman 
(275). 
Anatomy and histology of the actinotroch larva of Phoronis australis, 
Menon (280). 
Anatomy of Rhabdopleura normanni , Vaney & Conte (438). 
Anatomy of Ptychodera erythrcea, Klunzinger (208). 
Anatomy of Rhabdopleura normani , Conte & Vaney (100). 
Development, structure and metamorphosis of Actinotrocha , Masterman 
(274). 
Structure and significance of the heart of the Enteropneusta , Ritter 
(355). 
Histology, Schneider (375). 
Function of the axial skeleton in the Enteropneusta , Ritter (352). 
Movements, and mechanism of same, in Enteropneusta, Ritter (354). 
Budding of Rhabdopleura normanni All., Vaney & Conte (438). 
Regeneration of the acorn-shaped gland, Dawydoff (109). 
Development of Phoronis , Selys-Longchamps (280). 
Classification, Ritter (353). 
Distribution. 
Gulf of Gascony, Rhabdopleura normanni , Vaney & Conte (438). 
Triest, Balanoglossus (Ptychodera ), Cori (101). — Tornaria larvse, Steuer 
(409). 
Red Sea, Ptychodera erythrcea , Klunzinger (208). 
Misaki (Japan), Phoronis australis , Ikeda (185). —N. sp. of Balanoglossus, 
Kuwano (220). 
N. America, Long Island, Balanoglossus , Crampton (103).—Southern 
California, Ritter (351). 
Bermudas, 1 sp., Verrill (441). 
Systematic. 
Hemichorda ; classification and general anatomy, Fowler, Encycl. Brit, 
xxix, pp. 249-252, 7 figg. 
Enteropneusta ; classification, Ritter, Amer. Natural, xxxvi, pp. 590 & 591. 
Balanoglossus, general anatomy, development and distribution, Willey, 
Encycl. Brit, xxvi, pp. 84-86, 3 figg.; at Long Island, Crampton, Ann. 
N. York Ac. xiv, p. 138 ; B. {Ptychodera), Triest, occurrence and pre¬ 
servation, Cori, Zool. Anz. xxv, pp. 361-365 ; B. occidentalis Ritter, 
movements and mechanism, Ritter, Biol. Bull, iii, pp. 255-261 ; 
B. occidentalis, B. (Ptychodera) australiensis, structure and signifi¬ 
cance of the heart, Ritter, Zool. Anz. xxvi, pp. 1-5, 3 figg.; B. n. sp. 
[unnamed] related to B. canadensis, Ritter, Science xv, p. 64. 
B. misahiensis , Misaki, anatomy, Kuwano, Annot. zool. Japon. iv, pp. 
77-84, 6 figg., n. sp. 
Cephalodiscus dodecalophus, anatomy and histology, Masterman, Quart. J. 
Micr. Sci. xlvi, pp„ 715-727, pis. xxxii & xxxiii. 
Dolichoglossus ( Balanoglossus) otagoensis, structure and significance of the 
heart, Ritter, Zool. Anz. xxvi, pp. 1-5 ; D. pusillus Ritter (MS). 
Southern California, Ritter, Science xv, p. 64 (n. sp. ?); movements 
and mechanism of same, Ritter, Biol. Bull, iii, pp. 255-261. 
1902. [Vol, xxxix.] e 31 
