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Moll. 3 
22. — Arey, L. B. An experimental 
study on glochidia and the factors 
underlying encystment. J. Exp. Zool. 
Philadelphia 33 1921 pp. 463-499 
pis. i-iii. 
23. — Arey, L. B. and Crozier, W. J. 
On the natural history of Oncidium. 
J. Exp. Zool. Philadelphia 32 1921 
pp. 443-502. 
24. — Artom, C. Ricerche sulla 
radios ensibilita degli element! della 
spermatogenesi nor.nale (enpirenica) 
in Paludina vivipara Linn. Atti 
Acc. Lincei. Roma 31 2 1922 pp. 32-35. 
25. — Artom, C. Ricerche sulla 
variazione della radiosensibilita degli 
spermatociti oligopirenici in Paludina 
vivipara Linn. Atti Ac. Lincei Roma 
31 1 1922 pp. 521-526. 
26. — Ashby, E. On the Chiton 
fauna of Australia. [Abstract.] Proc. 
Malac. Soc. London 15 1922 pp. 63-64. 
27. — Ashby, E. Description of 
a new species of fossil Loricella (order 
Polyplacophora). With remarks on 
some undescribed characters present 
in Loricella angasi. Ad. and Ang., and 
L. torri, Ashby. Papers and Proc. 
R. Soc. Tasmania Hobart 1921 1922 
pp. 37-40 pi. xv. 
23. — A3fcre, G. Recherchos sur los 
Mollusques terrestres et d’eau douce. 
Bui. soc. hist. nat. Toulouse 49 1921 
pp. 201-300 1 pi. 
29. — Astre, G. Le gisement coquillier 
de Manciet dans les faluns helvetiens 
du Gers. Bui. soc. hist. nat. Toulouse 
50 1922 pp. 120-140. 
30. — Astre, G. Recherches critiques 
sur VOstrea, dite stricticostata, des 
terrains nummulitiques de laMontagne- 
Noire (= Ostrea moussoulensis nov. 
spec. ) Bui. soc. hist. nat. Toulouse 
50 1922 pp. 141-204 pis. i-vi. 
31. — Bacchus, D. Helix aspersa 
var. exalbida at Westbury-on-Trym, 
Glos. W. J. Conch. Leeds 16 1922 
p/ 246. 
32. — Bacchus, D. Paludestrina 
jenkinsi (Smith) in Somerset N. J. 
Conch. Leeds 16 1922 p. 262. 
33. — Bacchus, D. A peculiar form 
of Hygromia fusca (Montagu) from 
Leigh Woods (Somerset), near Bristol. 
J. Conch. Leeds 16 1922 pp. 286-287. 
(n-15697 r) q 
34. — Bacchus, D. Land and fresh- 
water mollusca of Winsley in North 
Wilts. J. Conch. Leeds 16 1922 pp. 
320-323. 
35. — Baker, F. Note on Lzptinaria 
imperforata F. Baker. Nautilus Boston 
Mass. 35 1922 p. 32. 
36. — Baker, F. C. The molluscan 
fauna of the Big Vermilion River, 
Illinois with special reference to its 
modification as the result of pollution 
by sewage and manufacturing wastes. 
Illinois Biol. Monogr., Urbana, 111. 7 
(2) 1922 pp. 1-126 pis. i-xv. 
37. — Baker, F. C. Pleistocene 
mollusca from northwestern and central 
Illinois. J. Geol., Chicago 111. 30 1922 
pp. 43-62. 
38. — Baker, F. C. Now species and 
varieties of mollusca from Lake 
Winnebago, Wisconsin, with new 
records from this State. Nautilus 
Boston Mass. 35 1922 pp. 19-21. 
39. — Baker, F. C. New Lymnaeas 
from Wisconsin and Minnesota with 
notes on shells from the latter State. 
Nautilus Boston Mass. 35 1922 pp. 22- 
25. 
40. — Baker, F. C. New species and 
varieties of mollusca from Lake Winne- 
bago, Wisconsin, with new records 
from this State. Nautilus Boston 
Mass. 35 1922 pp. 130-133. 
41. — Baker, H. B. The mollusca 
of Dickinson County, Michigan. 
Occ. paprs. Mus. Zool. Ann Arbor 
Mich. No. Ill 1922 pp. 1-44. 
42. — Baker, H. B. The mollusca 
collected by the University of Michigan 
— Walker Expedition in Southern 
Vera Cruz, Mexico. I. Occ. paprs. 
Mus. Zool. Ann Arbor Mich. No. 106 
1922 pp. 1-94 pis. i-xvii. 
43. — Baker, H. B. Aperostomatinae. 
Nautilus Boston Mass. 35 1922 pp. 
14-16. 
43a. — B&rdarson, G. G. Fossile 
Skalaflej ringer ved Breidifjorduri 
Vest-Island. Geol. Foren. Forh. 
Stockholm 43 1922 pp. 323-380. 
44. — Barney, R. L. An indication 
of the value of artificial propagation 
of pearly mussels. Nautilus Boston 
Mass. 35 1922 pp. 53-58. 
h 1—2 
