[1921 J 
V. Echinoderma. 
Echin. 3 
22. — Clark, A. H. The echinoderms 
as aberrant arthropods. Smithsonian 
Misc. Collect. Washington 72 1921 
pp. 1-20. 
23. — Clark, H. L. The echinoderm 
fauna of Torres Strait : its composition 
and its origin. Dept. Mar. Biol. 
Carnegie Inst. Washington 10 1921 
pp. 1-224 pis. i-xxxviii. 
24. — Clark, A. H. A new Starfish 
(Lydiaster americanus) from the Gulf 
of Mexico, representing a section of 
the Subfamily Goniasterinae hitherto 
known only from the Indo-Pacific 
Region. J. Acad. Sci. Washington 6 
1916 pp. 141-144. 
25. — Clark, A. H. Seven new 
Genora of Echinoderms. «T. Washing- 
ton Acad. Sci. 6 1916 pp. 115-122. 
26. — Clark, A. H. Ophiomaria, a 
new Genus of Ophurians from southern 
South America and the adjacent 
portion of the Antarctic Continent. 
J. Washington Acad. Sci. 6 1916 
pp. 384-387. 
27. — Clark, A. H. Six New Genera 
of Unstalked Crinoids belonging to the 
Families Thalassometridae and Chari- 
tometridae. J. Washington Acad. Sci. 
6 1916 pp. 605-608. 
28. — Clark, A. H. A Rovision of the 
Crinoid Family Antedonidae, with the 
diagnoses of Nine New Genera. J. 
Washington Acad. Sci. 7 1917 pp. 127- 
131. 
29. — Clark, A. H. A revision of the 
recent genera of the crinoid family 
Bourgueticrinidae with the description 
of a new genus. J. Washington Acad. 
Sci. 7 1917 pp. 388-392. 
30. — Clark, A. H. The interrela- 
tionships of the subfamilies and genera 
included in the crinoid family Ante- 
donidae. J. Washington Acad. Sci. 7 
1917 pp. 504-512. 
31. — Clark, A. H. The systematic 
position of the Crinoid genus Holopus. 
J. Washington Acad. Sci. 9 1919 pp. 
136-138. 
32. — Clark, H. L. Echinoderms in 
birds’ stomachs. Science New York 
N.Y. 51 pp. 594-595. 
(n-17041 m) Q 
33. — Clark, T. H. A new Agela- 
crinitid from the Chazy of New York. 
Amer. J. Sci. New Haven Conn. 50 
1920 pp. 69-71. 
34. — Clark, F. W. and Wheeler, 
W. C. The inorganic constituents of 
marine invertebrates. Prof. Paprs. 
U.S. geol. Surv. Washington 102 1917 
pp. 1-56. 
35. — Clarke, J. M. Early parasitism 
of the snails upon the crinoids. New 
York State Mus. Bui. Albanv 221-222 
1919 (1921) pp. 64-78. 
36. — Clarke, J. M. Symbiotic con- 
junction of crinoids and starfishes. 
New York State Mus. Bui. Albany 
221-222 1919 (1921) pp. 78-80. 
37. — Collin, L. Etude de la Region 
Ddvonionne occidentalo du Finist6rc. 
Th&se Fac. Sci. Univ. Paris 8 pp. 1-474 
pis. i-ii [Ech. at pp. 427 & 428]. 
37a. — Collip, J. B. The alkali 
reserve of marine fish and inverte- 
brates. The excretion of carbon 
dioxide. J. Biol. Chem. New York 
44 1920 pp. 329-344. 
38. — Coulfon, O. Deuxifeme note 
sur le calcaire de Grip. Bull. Soc. 
Etude Sci. Angers N.S. 50 1920 (1921) 
pp. 19-27. 
Crawford, W. vide Harris, W. J. 
39. — Crossland, C. Dangers of pearl 
diving. Sudan Notes Rec. Khartoum 
2 1919 pp. 234-236. 
40. — Currie, E. D. Fossils from 
Western Persia. Geol. Mag. London 
58 1921 pp. 529-637. 
41. — Darton, N. H. A comparison of 
Palaeozoic sections in Southern New 
Mexico. U.S. Geol. Surv. Washington 
Prof, paper 108-c 1917 pp. 29-55. 
42. — Das-Gupta, H. C. A short 
note on the cretaceous echinoid Cyr- 
toma, Mc’Lelland. J. Asiat. Soc. 
Beng. Calcutta 16 1921 pp. 297-300. 
43. — Decary, R. Observations sur 
des Echinodermes de Madagascar. 
Bull. Mus. Hist. Nat. Paris 1921 1921 
pp. 243-244. 
44. — DSmoly, F. Nouvelles observa- 
tions sur les 6chinides de la Savoie. 
Bull. Soc. Hist. Nat. Savoie Ser. ii 
16 1911-12 (1913) pp. 178-208 pi. xvi. 
a 6—2 
