MOLLUSCA AND 
BEATE 3 
Fig. 32. HELIX NITIDIUSCULA, shell, with the animal; 32 a, head 
and neck of the animal, from above.—p. 64. 
Fig. 33. HELIX SAXATILIS, animal, with the shell, enlarged ; 
33 a, profile of the shell, and 33 8, base of the shell, enlarged ; 
33 c, natural size.—p. 42. 
Fig. 34. HELIX LYRATA, animal, with the shell, enlarged; 34a, 
profile, and 34 0, base of the shell, magnified ; 34 c, natural size.— 
p. 39. 
Fig. 35. HELIX LABIOSA, animal, with the shell; 85 a, the side, 
and 35 b, the base of the shell; 35 c, portion of the surface, mag- 
nified.—p. 67. 
Fig. 36. HELIX TOWNSENDIANA, outline, with the animal. —p. 66. 
Fig. 37. HELIX VANCOUVERENSIS, outline, with the animal.— 
p. 36. 
Fig. 38. HELIX NUTTALLIANA, outline, with the animal.—p. 66. 
Fig. 39. HELIX LORICATA (H. Lecontei, Lea, Trans. Amer. Philos. 
Soc. 2d ser. X. pl. 30, f. 13), lateral, and 39 a, basal views of the 
shell, enlarged ; 39 b, natural size; 39 c, portion of surface, mag- 
nified.—p. 68. 
Fig. 40. HELIX GERMANA, 40 a, and 400, three views of the 
shell, enlarged ; 40 c, natural size.—p. 70. 
Fig. 41. HELIX STRIGOSA, the front; 41 a, the profile, and 410, 
the base of the shell.—p. 36. 
Fig. 42. HELIX SPORTELLA, the front; 42 a, the profile, and 42 b, 
the base of the shell; 42 c, portion of the surface, magnified.—p. 37. 
Fig. 43. HELIX GULOSA, animal, with the shell, 43 a, aperture 
of the shell; 43 b, base of the shell.—p. 64. 
Fig. 44. HELIX z10zA0, the shell, from above; 44 a, view of the 
side; 44 b, the base; 44c, portion of the surface, magnified ; 
44 d, outline of the aperture, enlarged.—p. 41. 
Fig. 45. HELIX SPIRILLUS, the superior ; 45 a, the lateral, 45 5, 
the inferior view of the shell, enlarged; 45 c, natural size.—p. 41. 
Fig. 46. HELIX PAUXILLUS, superior view, enlarged; 46 a, the 
side, and 46 b, the base of the shell, enlarged, 46 c, natural size. 
—p. 40. 
Fig. 47. HELIX INTAMINATA, shell, with the animal.—p. 35. 
Fig. 48. HELIX GRADATA, from above; 48 a, and 48 b, basal and 
lateral views of the shell, enlarged ; 48 c, natural size.—p. 49. 
PLATE 4. 
Fig. 49. HELIX RUBIGINOSA, dorsal view of the shell, enlarged ; 
_ 40 a, and 49 b, side and base of the shell, enlarged ; 49 c, natural 
size.—p. 50. 
Fig. 50. HELIX OBOLUS, the shell, above, enlarged ; 50 a, the base, 
and 50 b, the side of the shell, enlarged; 50 c, natural size.—p. 53. 
Fig. 51. HELIX DADALEA, superior; dla, lateral; 510, basal 
views of the shell, enlarged; öl c, natural size; öl d, the aper- 
ture, magnified.—p. 54. 
Fig. 52. HELIX BURSATELLA, shell, with the animal; 52a, 
aperture of the shell, enlarged; 52 b, depressed variety, with the 
animal; 52c, the side, and 52 d, the base of the distorted variety, 
magnified ; 52 e, natural size; 52 f, 52 y, 52 h, three views of the 
normal form, enlarged; 524, natural size; 52k and 521, views 
of the young shell, enlarged; 52 m, natural size.—p. 51. 
Fig. 52". HELIX HYSTRIX, the top; 52°a, the side, and 52° b, 
the base of the shell, enlarged; 52* c, natural size.—p. 55. 
Fig. 52, HELIX STELLULA, the top; 52! a, the side, and 52! b, 
the base of the shell, enlarged ; 52! c, natural size.—p. 56. 
Fig. 53. HELIX TUMULUS, lateral view of the shell; 53 a, supe- 
rior, and 53 b, inferior views of the shell.—p. 62. 
SHELLS. 
Fig. 54. HELIX TENTORIOLUM, the animal, with the shell.—p. 63. 
Fig. 55. Hee TROILUS, the animal, with the shell of variety 
e; 55 a, top of the shell, of the same variety; 55 b, top of the 
shell of variety b; 55 c, lateral view of the shell of variety a.— 
p. 58. 
Fig. 56. HELIX CRESSIDA, shell, from above; 56 a, 56 b, 56 c, 
lateral, basal, and superior views of the green variety.—p. 57. 
Fig. 57. Herix EuRYDICE, the shell, from above, 57 a, the 
shell, from beneath; 57 b, lateral view of the shell.—p. 60. 
Fig. 58. HELIX TROCHIFORMIS, shell, with the animal; 58a, 
shell, from above; 58 b, shell, from below.—p. 6l. 
Fig. 59. HELIX CULTRATA, shell, from above, enlarged; 59 a, 
and 59 b, side and base of the shell, enlarged ; 59 c, natural size. 
—p. 46. 
PLATE 5: 
Fig. 60. HELIX PERTENUIS, the shell, from above, enlarged; 
60 a, and 602, lateral and basal views of the shell, enlarged ; 
60 c, natural size.—p. 45. 
Fig. 01. HELIX EXAQUATA (H. disculus, Pfeiffer, in Menke's 
Zeitsch. 1850, p. 153), top of the shell, enlarged; 61a, the side, 
and 61 b, the base of the shell, enlarged, 61 c, natural size — 
p. 47. 
Fig. 62. HELIX SUBTILISSIMA, the shell, from above, magnified ; 
62 a, and 628, lateral and basal views of the shell, enlarged ; 
62 c, natural size.—p. 48. 
Fig. 63. HELIX CALOULOSA, the shell, from above, enlarged ; 
63 a, the side, and 63 5, the base of the shell, magnified; 63 c, 
natural size.—p. 48.. 
Fig. 64. Hrs TONGÀNA, front view of the shell, enlarged ; 
' 64 a, shell, with the animal; 640, natural size. [Nore. The 
specimens of H. fornicata, intended to have been figured here, 
were accidentally lost, and H. Tongana has been substituted. | 
Fig. 65. HELIX (NANINA) IRRADIATA, shell, with the animal, 
65 a, shell, from above, and 65 b, the base of the shell, enlarged, 
65 e, natural size.—p. 34. 
Fig. 66. HELIX (NANINA) RUBRICATA, the animal, with the 
shell; 66 a, portion of the surface, magnified, to show the sculp- 
ture.—p. 29. 
Fig. 67. HELIX (NANINA) SCORPIO, lateral view of the animal 
and shell; 67 a, dorsal view of the animal and shell; 67 b, mucus- 
pore, enlarged.—p. 88. 
Fig. 68. HELIX (NANINA) LURIDA, shell, from above; 68 a, an 
68 b, lateral and basal views of the shell. —p. 31. 
Fig. 69. HELIX (NANINA) CASCA, the shell, from above; 69 a, 
lateral view of the shell, 69 b, the shell, from beneath.—p. 81. 
Fig. 70. STREPTAXIS CONTUSA, shell, with the animal; 70 a, 
outlines of the head, magnified.—p. 71. 
Fig. 71. HELIX (NANINA) FRICATA, the shell, from above; 7la, 
and 71 b, lateral and basal views of the shell.—p. 32. 
Fig. 72. HELIX CRYPTOPORTICA, shell, from above, enlarged ; 
72 a, and 720, lateral and basal views of the shell, enlarged ; 
72 c, natural size.—p. 44. 
Fig. 73. HELIX CICERCULA, the shell, from above, enlarged, 
73 a, and 73 b, lateral and basal views of the shell, enlarged; 
73 c, natural size.—p. 43. 
Fig. 74. HELIX DEVIA, view of the shell, from above; 74 a, 
lateral view of the shell; 74 b, basal view of the shell.—p. 69. 
PLATE 6. 
Fig. 75. BULIMUS AURIS-LEPORIS, side view of the animal, with 
the shell.—p. 78. 
