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435. — Swartz, C. K. (and others). 
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436. — Taylor, F. Mollusca at 
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437. — Taylor, J. W. Early mollusca 
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438. — Taylor, J. W. Helix ( Acan - 
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Termier, H. vide Fallot, P. 
439. — Thaanum, D. Tapes philip- 
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440. — Thompson, L. D. Collecting 
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441. — Tomlin, J. R. le B. Description 
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442. — Tomlin, J. R. le B. Description 
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443. — Tomlin, J. R. le B. Six new 
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Conch. Leeds 16 1921 pp. 215-217 
pi. viii. 
444. — Tomlin, J. R. le B. Note on 
the Mactra complanata of Reeve and 
Deshay es. J. Conch. Leeds 16 1921 
p. 226. 
445. — Tomlin, J. R. le B. Note on 
Trochus pennanti Philippi. J. Conch. 
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446. — Tomlin, J. R. le B. Note on 
the Stonuitella bicarinata, 8. biporcata 
and S. margaritana of A. Adams. J. 
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447. — Tomlin, J. R. le B. Descrip- 
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J. Bombay Nat. Hist. Soc. 27 1921 
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448. — Toms, H. S. Land and 
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449. — Tornquist, A. Die nodosen 
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450. — Trappmann, W. Die Musku- 
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585. 
451. — Trauth, F. Das Eoz&nvor- 
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452. — Trechmann, C. T. On a deposit 
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453. — Turchini, J. and Ladreyt, F. 
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454. — Ussing, H. Bidrag til vore 
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455. — Vanatta, E. G. Land shells 
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456. — Vanatta, E. G. Shells in 
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35 1921 p. 64. 
457. — Vanatta, E. G. Shells of Zion 
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458. — Van Hoepen, E. C. N. Cre- 
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