2 Proch. 
XIII. Prochorclata. 
[1918] 
I.— TITLES. 
Arey, L. B. The orientation of Am- 
phioxus during locomotion. J. Exp. 
Zool. Philadelphia 19 1915 (37-44). 1 
Carlsson, J. G. Tunicater ifrau 
Sveriges vastkust. Monascidier. Ark. 
Zool. Stockholm 11 No. 20 1918 (1-22) 
pi. 2 
Duboscy, O. Selysina perforans Dub. 
Description des stades connus du 
Sporozoaire de Stolonica avec quelques 
remarques sur le pseudovittelus des 
statoblastes et sur les cellules geantes. 
Arch. zool. exper. Paris 58 1918 (1-53) 
pi. I. 3 
Forsyth, It. A. vide Bitter, W. E. 
Hecht, S. The Physiology of Ascidia 
alra Leseur. J. Exp. Zool. Philadelphia 
25 1918 (229-299). 4 
Mortensen, Th. Observations on pro- 
tective adaptations and habits, mainly 
in marine animals. 3. Tunicates. 
Kjobenhavn Nath. Medd. 69 1918 (71- 
72). 5 
Oka, A. Ein neuer Fall von der 
Ausstossung der Eingeweide bei den 
Asciden. Annot. Zool. Jap. Tokyo 9 
1918 (393-397). 6 
Oka, A. Megalodicopia Mans n. g. n. 
sp., eine sehr merkwiirdige Ascidie aus 
dem japanischen Meere. Annot. Zool. 
Jap. Tokyo 9 1918 (399-406). 7 
Ritter, W. E. and Forsyth, R. A. 
Aseidians of tho Littoral Zone of 
Southern California. Berkeley, Univ. 
Calif. Publ. Zool. 16 1917 (439-512) 
pis. xxxviii-xlvi. 8 
II.— SUBJECT INDEX. 
STRUCTURE. 
Carlsson, 2 ; Duboscy, 3 ; Oka, 6, 7 ; 
Ritter, 8. 
PHYSIOLOGY. 
Arey, 1 ; Hecht, 4. 
ETHOLOGY. 
Mortensen, 5. 
DISTRIBUTION. 
Sweden : Carlsson, 5. 
Japan : Oka, 6, 7. 
California : Ritter and Forsyth, 8. 
III.— SYSTEMATIC INDEX. 
Tunicata. • 
Adaptations, habits, Mortensen 5. 
Synopsis of Swedish Monascidice, 
Carlsson 2. 
Ascidia atra, physiology, Hecht 4. 
Stolonica , parasite, Duboscy 3. 
Styela clavaia, Oka 6. 
Megalodicopia gen. n. Mans sp. n., 
Japan Sea, Oka Annot. Zool. Jap. 
9 p. 399. 
Molgula verrucifera sp. n. S. Cali- 
fornia, Ritter and Forsyth Univ. 
Calif. Publ. Zool. 16 p. 446 figs. 
Styela baniharti sp. n. S. California, 
Ritter and Forsyth t.c. p. 452 figs. 
