XII. PROCHORDATA 
INCLUDING 
ENTEROPNEUSTA AND PTEROBRANCHIA 
BY 
J. R. NORMAN. 
CONTENTS 
PAGE 
I. Titles ... 1 
II. Subject Index ... ... ... ... ... ... 2 
III. Systematic Index 3 
I.— TITLES. 
1. — Arnback-Christie-Linde, A. Nor- 
thern and Arctic invertebrates in the 
collection of the Swedish State 
Museum (Riksmuseum). VIII Tunicata. 
1. Styelidae and Polyzoidae. K. 
Svenska Vet.-Ak. Handl. Stockholm 
63 1922 No. 2 62 pp. 3 pis. 6 text-figs. 
2. — Ayers, H. Vertebrate cephalo- 
genesis. V. Origin of jaw apparatus 
and trigeminus complex — Amphioxus 
Ammocoetes, Bdellostoma, Callorliyn- 
chus. J. Comp. Neur. Philadelphia 33 
1921 pp. 339-404. 36 figs. 
3. — Bovien, P. Remarks on Molgula 
liitkeniana Traustedt. Videns. Medd. 
nat. For. Kjobenhavn 72 1921 pp. 81- 
82 3 figs. 
4. — Bovien, P. Ascidiae from the 
Auckland and Campbell Islands (Holo- 
somatous forms). (Papers from Dr. Th. 
Mortensen’s Pacific Expedition 1914- 
1916 No. IV). Videns. Medd. nat. For. 
Kjobenhavn 73 1922 pp. 33-47 pi. iv 
5 text-figs. 
(n-15697 c) q 
5. — Franz, V. Systematische Re- 
vision der Akranier. (Fauna et Ana- 
toinia ceylanica Nr. 10). Jenaische 
Zs. Natw. 58 1922 pp. 369-452 33 figs. 
6. — Franz, V. Kurzer Bericht fiber 
systematische Acranierstudien. Zool. 
Anz. Leipzig 54 1922 pp. 241-249. 
7. — Fulton, J. F. Animal chloro- 
phyll : its relation to haemoglobin and 
other animal pigments. Q. J. Microsc. 
Sci. London 66 1922 pp. 339-396. 
8. — Grave, C. Amaroucium con- 
stellatum (Verrill). II. The structure 
and organization of the tadpole larva. 
J. Morph. Philadelphia 36 1922 pp. 71- 
91 4 pis. 4 text-figs. 
9. — Hartmeyer, R. Ascidien von 
Juan Fernandez. Nat. Hist. J. Fer- 
nandez and Easter Island. Ed. by 
C. Skottsberg 3 1922 pp. 131-136 1 fig. 
10. — Hartmeyer, R. Ascidien aus 
dem Barentsmeer. Wiss. Meeres- 
unters. Kiel Abt. Helgoland 13 1919 pp. 
125-132. 
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