14 Kept. 
[1921] 
XIV. Reptilia and Batrachia. 
274. — Schmidt, W. J. , Einiges fiber 
die Entwickelung der Guanophoren bei 
den Amphibien. Anat. Hefte Wies- 
baden I. Abth. 59 1921 pp. 293-318 
2 plates. 
275. — Schoch, H. E. The Egg-laying 
of a Chameleon. S. Afric. Journ. Nat. 
Hist. Pretoria 2 1920 pp. 113-115. 
276. — Schultz, W. Gleichlauf von 
Verpflanzung und Kreuzung bei Frosch- 
lurchen. Schliisse auf die Zusammer- 
fiigung der Plasmabausteine. Arch. 
EntwMech. Leipzig 43 1918 pp. 361- 
381. 1 pi. 
277. — Schulze, W. Versuche iiber den 
Einflufz endokriner Driisersubstanzen 
auf die Morphogenie. Kaulquappen- 
fiitterungsversuche mit Epithelkorpern. 
Arch. EntwMech. Leipzig 48 1921 
pp. 489-504 figs. 1-3. 
278. — Scott-Birab6n, M. I., and Fer- 
n&ndez-Marcinowski, K. Variaciones 
Locales de Caracteres Especificos en 
Larvas de Anfibios. An. Soc. Cient. 
Argentina Buenos Aires 92 1921 pp. 
129-144. 
279. — Scriban, J. A. Sur la presence 
des fibres musculaires atypiques dans 
la musculature de la queue des Tetards 
de Batraciens Anoures pseudo-hyper- 
trophiques. C. It. Soc biol. Paris 85 1921 
pp. 574-578 figs. 
280. — Seidlitz, W. von. t)ber die 
vordiluviale Wirbeltierfauna Mittel- 
thiiringens. Jenaische Zeitschr. Jena 
55 1917-19 pp. 3-22 figs. 1-3. 
281. — Serie, P. Notas sobre las ser- 
pientes venenosas de la Argentina. 
Prim. Reun. Nac. Soc. Arg. Cienc. Nat. 
Buenos Aires 1916 (1918-19) pp. 400- 
417 pis. 39-41. 
282. — Seri§, P. Enumeracion de los 
ofidios de Tucuman. Prim. Beun. Nac. 
Soc. Arg. Cienc. Nat. Buenos Aires 1916 
(1918-19) pp. 418-420. 
283. — Shaner, B. F. The develop- 
ment of the pharynx and aortic arches 
of the turtle, with a note on the fifth 
and pulmonary arches of mammals. 
Amer. J. Anat. Philadelphia 29 1921 
pp. 407-429 pis. 1-4. 
284. — Shufeldt, B. W. Observations 
on the Cervical Begion of the Spine in 
Chelonians. Journ. Morph. Philadelphia 
35 1921 pp. 213-224 pis. 1 & 2. 
285. — Slotopolsky, B. Beitrage zur 
Kenntnis der Verstummelungs- und 
Begenerationsvorgange am Lacertilier- 
schwanze. Viertelj. Nat. Ges. Zurich 
66 1921 pp. 39-48. 
286. — Smith, M. A. Two new Bat- 
rachians and a new Snake from Borneo 
and the Malay Peninsula. Journ. Fed. 
Malay Sts. Mus. Kuala Lumpur 10 1921. 
pp. 197-199 pi. 11. 
287. — Smith, M. A. Reptiles and 
Batrachians collected on Pulo Condore. 
Journ. Nat. Hist. Soc. Siam Bangkok 4 
1921 pp. 93-97 pi. 1. 
288. — Smith, M. A. New or Little- 
known Reptiles and Batrachians from 
Southern Annam (Indo-China). Proc. 
Zool. Soc. London 1921 pp. 423-440 
2 pis. figs. 
289. — Smith, M. A. and Procter, J. B. 
On a Collection of Reptiles and Batra- 
chians from the Island of Ceram, Indo- 
Australian Archipelago. Ann. Mag. Nat. 
Hist. London ser. 9 7 1921 pp. 352-355. 
290. — Snyder, L. L. Some Observa- 
tions on Blanding’s Turtle. Canad. 
Field-Nat. Ottawa 35 1921 pp. 17-18. 
Sordelli, A. vide Houssay. 
291. — Speck, F. G. The origin of the 
belief that snakes swallow their young 
for protection. Copeia New York 
No. 98 1921 pp. 51-54 ; also Noble, G. K. 
pp. 54-57. 
292. — Spemann, H. tiber die Deter- 
mination der ersten Organanlagen des 
Amphibienembryo I-VI. Arch Entw- 
Mech. Leipzig 43 1918 pp. 448-555 
C pis. 7 text-figs. 
293. — Spemann, H. Die Erzeugung 
tierischer Chimaren durch heteroplas- 
tische embryonale Transplantation zwi- 
schen Triton cristatus und taeniatus. 
Arch. EntwMech. Leipzig 48 1921 
pp. 533-570 figs. 1-24. 
294. — Steiner, H. Hand und Fuss 
der Amphibien, ein Beitrag zur Extre- 
mitatenfrage. Anat. Anz. Jena 53 1921 
pp. 513-542 text-figs. 1-14. 
295. — Stephens, F. Phyllodactylus 
tuberculosus in California. Copeia New 
York No. 91 1921 p. 16. 
