2 Proch . 
Xir. Prochordata. 
[1921] 
I.— TITLES. 
1. — Arnback-Christie-Linde, A. On 
the Reproductive Organs of the Ascidian 
Kiikenthalia borealis (Gottschaldt). 
Proc. Zool. Soc. London 1921 pp. 
137-196. 
2. — Arnback-Christie-Linde, A. A 
remarkable Styelid Tunicate from 
Spitzbergen. Ann. Mag. Nat. Hist. 
London Ser. 9 7 1921 pp. 347-352. 
3. — Ayers, H. Ventral spinal nerves 
in Amphioxus. J. Comp. Neur. 
Philadelphia 33 1921 pp. 155-162. 
4. — Crozier, W. J. Notes on some 
problems of Adaptation : 6. Relation 
of light to the pigmentation of Asci- 
diane. Biol. Bull. Wood’s Hole 
Mass. 41 1921 pp. 106-111. 
5. — Grape, C. Amaroucium pelluci - 
dum (Leidy) form constellatum (Verrill). 
I. The activities and re-actions of the 
tadpole lava. J. Exp. Zool. Phila- 
delphia 30 1920 pp. 239-257. 
6. — Huntsman, A. G. Age-deter- 
mination, Growth and Symmetry in 
the Test of the Ascidian, Ghelyosoma. 
Trans. Canad. Inst. Toronto 13 Pt. 1 
1921 pp. 27-38 pi. i. 
7. — Huxley, J. S. Studies in 
Dedifferentiation. II. Dedifferentia- 
tion and resorption in Perophora. 
Q. J. Microsc. Sci. London 65 1921 
pp. 643-697 pis. xxvi-xxviii. 
8. — Jaekel, O. t)ber fragliche 
Tunicaten aus dem Perm Siziliens. 
Palaeont. Zs. Berlin 2 1915-1918 
pp. 66-74 1 pi. 
9. — Kirkpatrick, R. On the Discovery 
of the missing Type Specimen of the 
Ascidian Oculinaria australis. Gray. 
Ann. Mag. Nat. Hist. London Ser. 
9 8 1921 pp. 494-496. 
10. — Mast, S. O. Reactions to light 
in the larvae of the ascidians Amarou- 
cium constellatum and A. pellucidum, 
with special reference to photic orienta- 
tion. J. Exp. Zool. Philadelphia 34 
1921 pp. 149-187. 
11. — Michaelsen, W. Expedition 
S.M. Schiff “ Pola ” in das Rote Meer 
nordliche und siidliche Halfte 1895/96- 
1 897 /98. Zoologische Ergebnisse xxxiii. 
Ascidae Krikobranchiae des Roten 
Meeres : Clavelinidae und Synoicidae. 
Denkschr. Ak. Wiss. Wien 97 1921 
Berichte Komm. Ozean. For. 37 pp. 
1 pi. 
12. — Michaelsen, W. Ascidien 
vom westlichen Indischen Ozean aus 
dem Reichsmuseum zu Stockholm. 
Ark. Zool. Stockholm 13 No. 23 1921 
pp. 1-25 1 pi. 
13. — Norman, J. R. Rhabdopleura. 
British Antarctic (Terra Nova) Exped. 
Zool. 4 No. 4 1921 pp. 95-102. 
14. — Orton, J. H. The Production 
of Living Glavellina Zooids in Winter 
by Experiment. Nature London 107 
1921 p. 75. 
14a. — Redikorzev, V. V. Faune de la 
Russie et des Pays limitrophes fondee 
principalement sur les collections du 
mus6e zoologique do l’Acad6mie 
Imperiale des Sciences do Petrograd. 
Tunicies (Tunicata). Livr. I. Petro- 
grad 1916 8vo. 336 pp. 6 pis. and figs. 
15. — Stiasny, G. Eine neue Tornaria 
aus dem Ostindischen Archipel 
( Tornaria sunieri). Zool. Meded. 
Leiden 6 1921 pp. 101-107. 
16. — Studwicka, F. K. Die lateralen 
Rumpfmuskeln von Amphioxus. Anat. 
Hefte Wiesbaden Abth. 1 58 1920 
pp. 215-398 4 pis. 
17. — Van Name, W. G. Ascidians of 
the West Indian Region and South 
Eastern United States. Bui. Amer. 
Mus. Nat. Hist. New York 44 1921 
pp. 283-494. 
18. — Van Name, W. G. Budding in 
Compound Ascidians and other Inver- 
tebrates, and its Bearing on the question 
of the Early Ancestry of theVertebrates. 
Bui. Amer. Mus. Nat. Hist. New York 
44 1921 pp. 275-282. 
