72 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
LITERATURE IN WHICH CAUD1NA ARENATA IS DESCRIBED OR 
MENTIONED. 
(Arranged chronologically. ) 
Chirodota arenata. 
1. Gould, A. A. (*41 ) 1 , p. 346 (with woodcut). 
2. Pourtales, L. F. (’51), p. 13, 14. 
3. Stirapson, W. (’51), p. 67. (A note as to habitat.) 
4. Ayres, W. 0. (’52), p. 143-145. 
Caudina arenata. 
5. Stimpson, W. (’53), p. 17. 
6 . Agassiz, E. C. and A. (’65), p. 97, Fig. 126. 
7. Clark, H. J. (’65), p. 187-193, Figs. 114-116. 
8 . Verrill, A. E. (’ 66 ), p. 354. 
9. Selenka, E. (’67), p. 358-359, Taf. 20, Figs. 129-131. 
10. Semper, C. (’ 68 ), p. 44,Taf. 10, Figs. 8 , 12, 14 ; Taf. 13, Fig. 5; Taf. 15, 
Fig. 18. 
11. Teuscher, R, (’76), p. 542-560, Taf. 22. 
12. Kingsley, J. S. (’81), p. 1-14, Pis. 1, 2. 
13. Marenzeller, E. von. (’81), p. 126, 127. 
14. Ludwig, H. (’82), p. 129. (A notice of eight specimens from Grand 
Manan.) 
15. Theel, H. (’82), p. 54. 
Caudina arenata armata. 
16. Theel, H. (’ 86 b), p . 17 , 18. 
1 See preceding Bibliography. 
