REFERENCE TO PLATES. 



(FOR PLATES 1-6 See p. 3O.) 



TRICHOTROPID/E. 



PLATE 7. 

 FIGURE, PAGE. 



37. Trichotropis borealis. Dentition. Fischer's Manual f. 



457, 40 



38. Trichotropis borealis. Operculum. Ibid. f. 458, . . 40 



39. Gyrotropis squamosa, Gabb. Proc. Philad. Acad. t. 17, 



f. 5, 1876, 41 



40 Seguenzia formosa, Dentition. Trans. Conn. Acad. vi, t. 



31, f. 14b 41 



41. Seguenzia formosa. Operculum. Trans. Conn. Acad. vi, 



t. 31, f. 14 a 41 



42. Trichotropis bicarinata, Brod. & Sowb. Conch. Icon. f. 2, 42 



43. Trichotropis tenuis, Smith (= bicarinata). Ann. Mag. 



N. Hist. 4 Ser. xx, 136, 1877, 42 



44. Trichotropis quadricarinata, A. Ad. (= borealis). Keeve^ 



Conch. Icon. f. 9, . .43 



45. Trichotropis conica, Moll. (= borealis). Ibid. f. 12, . 43 



46. 47. Trichotropis borealis, Brod. & Sowb. Ibid. f. 1, . 42 

 47a. Trichotropis borealis, Brod. & Sowb. Forbes & Hanley, 



Brit. Moll. t. ii, f. 1, 42 



48. Trichotropis costellata, Couth. ( borealis). Conch. 



Icon. f. 13, "... .43 



49 Trichotropis cancellata, Hinds. Ibid. f. 3, . ' . .43 



50. Trichotropis flavida, Hinds (= cancellata). Ibid. f. 6, 43 



51. Trichotropis clathrata, A. Ad. Ibid. f. 10, . . .43 



52. Trichotropis inermis, Hinds (= borealis). Ibid. f. 11, . 43 



53. Trichotropis coronata, Gould. Archiv fur Naturg. li, t. 



16, f. 4, a. . 43 



54. Trichotropis coronata, Gould. AurvilJius, Arct. Hafsmoll. 



t. 12, f. 15, 43 



55. Trichotropis cedonulli, A. Ad. Conch. Icon. f. 7 b. . 44 



56. Trichotropis unicarnata, Brod. & Sowb. Ibid. f. 8, . 44 



57. Trichotropis fimbriata, Jeffreys. Proc. Zool. Soc. t. 5, f. 



7 1885 44 



58. Trichotropis densistriata, Jeffreys. Ibid. t. 5, f. 8, 1885, 44 



59. Trichotropis insignis, Midd. (= borealis). Aurivillius, 



Arct. Hafsmoll. t. 12, f. 17, . . . . . . 43 



PLATE 8. 



60. Trichotropis Kroyeri, Phil. Aurivillius, Arct. Hafsmoll. 



t. 12, f. 13, 44 



(438) 



