26 



E. huaheinensis Pfr. iii, 61. 

 aranea Behn. 



ENDOBONTA. 



E. tanese Grt. iii, 62. 

 janece Schra. & Pfr. 

 boraborensis Pse. ms. 



Peleiv Island species. 



E. constricta Semp. iii, 67. E. kororensis Bedd. viii, 84. 



E. fuscozonata Bedd. viii, 83. E. lacerata Semp. iii, 67. 

 E. irregularis Semp. iii, 67. 



Section Thaumatodon Pilsbry, 1893. 



Pitys PEASE, P. Z. S., 1871, p. 450 (in part). GAERETT, Journ. 

 Acad. Nat. Sci. Phila. viii, p. 388 (1881). Not Pitys Beck, Index 

 Molluscorum p. 9 (1837). 



Shell discoidal, the spire low, convex ; umbilicus open or closed ; 

 periphery generally broadly rounded ; surface rib-striate, unicol- 

 ored or flammulate. Aperture having internal teeth or folds upon 

 the outer wall, and the parietal wall, sometimes lacking upon the 

 latter. (PI. 4, figs. 35, 36, 37, 38, E. miiltilamellata Grt. See also 

 pi. 4, figs. 33, 34, E. derbesiana Cr.). 



In E. miiltilamellata Grt. the lamellae within the outer lip exhibit 

 a peculiar structure; at frequent intervals they bear long curved 

 hook-like processes, directed toward the aperture as shown in pi. 4, 

 fig. 38. This structure is well adapted to prevent the entrance of 

 insect enemies of the snail. No similar formation has been 

 described in other land snails, except in the genus Strobilops ; but 

 in that group the processes are upon the parietal lamellae only, 

 while in Thaumatodon the palatal lamellae alone are armed. 



Polynesian species. 



E. acuticosta Mouss. iii, 60. 

 E. analogica Pse. iii, 63. 

 E. anceyana Grt. viii, 96. 

 E. baldwini Anc. 



v. albino, Anc. 

 E. boraborensis Grt. iii, 66. 

 E. consimilis Pse. iii, 60. 



societatus Mouss., Schm. 

 E. consobrina Grt. iii, 66. 

 E. contorta Fer. iii, 63. 



intercarinata Migh. 

 E. decemplicata Mouss. iii, 63. 



E. marquesana Grt. viii, 96. 

 E. maupiensis Grt. iii, 65. 



maujntiensis Pfr. 

 E. miiltilamellata Grt. iii, 63. 

 E. octolamellata Grt. viii, 95. 

 E. opanica Ant. iii, 67. 



oparica auct. iii, 67. 

 E. parvidens Pse. iii, 64. 



incerta Mouss., Pfr. 

 E. paucicostata Pse. iii, 60. 

 E. punctiperforata Grt. iii, 66. 

 E. radiella Pfr. iii, 38. 



