EXPLANATION OF PLATES. 329 



36, 37. Bulimulus pilula v. cooperi Dall. Moll. Mex., . .139 



38. Bulimulus sufflatus Gld. Jour. Bost. Soc., . . .136 



39. Bulimulus sufflatus Old. Moll. Mex., . . . .136 



40. 41. Bulimulus juarezi (^sufflatus Gld.). Moll. Mex., . 136 

 42, 44. Bulimulus sufflatus Gld. Specimens, .... 136 

 45, 47. Bulimulus (Nsesiotus) unifasciatus Sowb. Specimens, . 116 



48. Bulimulus dealbatus Say, apex. Pilsbry, del., . . . 128 



PLATE 19 (Orthotomium). 



49. Bulimulus pallidior Sowb. Moll. Mex., .... 142 



50. Bulimulus pallidior v. striatulus. Specimen, . . . 143 



51. Bulimulus pallidior Sowb. Specimen, .... 142 



52. Bulimulus vegexpira Coop. (=v. striatulus). Cal. Acad., 143 



53. Bulimulus vegexpira Sowb 142 



54. Bulimulus vegetus (pallidior). Boston Jour., . .142 



55. Bulimulus pallidior Sowb. Specimen, .... 142 



56. 57. Bulimulus montezuma Dall. Specimens, . . . 144 

 58, 59. Bulimulus gabbi C. & F. Moll. Mex., . . .147 

 60-62. Bulimulus xantusi W. G. B. Specimens, . . .149 



63. Bulimus digitale Reeve. C. Icon. 



64. Bulimulus levis Dall. P. Cal. Acad., . . . .140 



65. 66. Bulimulus baileyi Dall. Specimens, .... 145 



67. Bulimulus baileyi Dall. P. U. S. N. M., . . . .145 



68. Bulimulus pallidior v. striatulus. Pilsbry, del., . . 143 



PLATE 20 (Orthotomiiim, Plicolumnd). 



69. 70. Bulimulus excelsus v. sinalose Pils. Specimens, . 141, 142 



71. Bulimulus excelsus Gld. Bost. Journ., .... 141 



72, 73. Bulimulus inscendens W. G. B. Moll. Mex., . . 150 



74. Bulimulus inscendens W. G. B. Specimen, . . . 150 



75. Bulimulus beldingi v. monticola. P. Cal. Acad., . . 150 



76. Bulimulus beldingi v. alta Dall. P. Cal. Acad., . . 149 



77. Bulimulus artemisia W. G. B. Specimen, . . . 152 



78. Bulimulus artemisia W. G. B. P. Cal. Acad., . . 152 



79. Bulimulus artemisia W. G. B. Pilsbry, del., . . . 152 



80. 81. Bulimulus abbreviate Coop. P. Cal. Acad., . . 153 

 82-85. Bulimulus ramentosus Coop. Specimen, . . . 153 



PLATE 21 (Sonorma). 



87, 88. Bulimulus spirifer Gabb. Moll. Mex., . . .158 

 89-91. Bulimulus spirifer Gabb. Specimens, . . . 158 



92, 93. Bulimulus veseyianus Dall. Proc. U. S. N. Mus., . 160 

 94-99. Bulimulus lamellifer Pils. Specimens, . . .160 



1. Bulimulus bryanti Coop. ( rimatus Pfr.). P. U. S. N. 



Mus., . 157 



2, 3. Bulimulus bryanti Coop, (rimatus Pfr.). Specimen, 157 



