PHOTOGRAPHIC CONCHOLOGY. 
PLATE III. UNIO (continued). 
1 TJ. obtusus, Lea, Trans. Amer. Phil. ser. 2, viii. pi. 11, f. 13.— 3. 
2 U. lineatus, Lea, Trans. Amer. Phil. ser. 2, viii. pi. 12, f. 20.— l^. 
3 U. Kleinianus, Lea, Trans. Amer. Phil. ser. 2, x. pi. 17, f. 18. — IJ. 
4 U. Boykinianus, Lea, Trans. Amer. Phil. ser. 2, viii. pi. 13, f. 22. — 3|. 
5 U. corrugatus. Wood (as Mya c. of MuUer, which scarcely suits), Gen. Conch 
108, pi. 24, f. 1, 2, 3, as Mya c— 11. 
6 U. dolabelloides. Lea, Trans. Amer. Phil. ser. 2, viii. pi. 15, f. 31. — 2^. 
7 U. atrocostatus, Lea, Trans. Amer. Phil. ser. 2, x. pi. f. — 3^. 
PLATE IV. VmO (continued). 
1 U. Bigbyensis, Lea, Trans. Amer. Phil. ser. 2, viii. pi. 22, f. 51. — 1|. 
2 U. crocodilorum, Morelet, Test. Novis. pt. 1, p. 28. — 2|. 
3 U. nucleopsis, Conrad, Proc. Philad. iv. p. 154. — 1^. 
4 TJ. lenior. Lea, Trans. Amer. Phil. ser. 2, viii. pi. 12, f. 18. — 1. 
5 TJ. perovalis, Conrad, Presh-wat. Shells, p. 43, pi. 2, f. 2. — 1^. 
6 TJ. gravidus. Lea, Jour. Acad. JSTat. Philad. ser. 2, iii. pi. 24, f. 5. — 3. 
7 TJ. variabilis, Maton. Trans. Lin. x. 327, pi. 24, f. 4 to 7. (as Mya v.)— Young 1-^ 
8 U. spatulatus. Lea, Trans. Amer. Phil. ser. 2, x. pi. f. — 11. 
PLATE V. ANODONTA, MTCETOPUS, UNIO. 
1 A. rubens, Lamarck, Anim. s. Vert. yi. pt. 1. p. 85. — 5^. 
2 My. siliquosus, Spix, Test. Braz. pi. 23, f. 2 (as Anodon s.)— 3J. 
3 A. Susannas, Grray," GriiEth's ed. Cuvier, Moll. pi. 24, f. 1. — 5J. 
4 IJ. (Symphonota) Cumingii, Lea, Synopsis, ed. 3. Not U. Cumingianus, Bunker, 
Zeit. Malak. 1852.— 3|. 
