REFERENCE TO PLATES. 



(FOR PLATES 1 — 6 See p. SO.) 



TRICHOTROPID>€. 



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, • "^1 



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). Reeve, 



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. Trichoti'opis coronata. Gould. Archiv fiir Naturg. li, t. 



16, f. 4, a. . 43 



54. Trichotropis coronata, Gould. Aurvillius, Arct, Hafsnioll. 



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, £ 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) 



