198 EPIPHRAGMOPHORA. 



cusps, marginals with a bifid inner and simple outer cusp (pi. 60, 

 fig. 7, E. nickliniana). Type E. tudiculata, pi. 58, figs. 62, 63. 



Section MONADENIA Pilsbry. Shell with depressed body whorl, 

 often more or less keeled or angular, the spire either low or conical. 

 Surface with growth striae. Mucus gland one, undivided, club- 

 shaped, its terminal portion glandular, and inserted on the dart 

 sack. (PI. 59, fig. 81, E.fidelis ; pi. 59, figs. 82, 86, E. mormonum). 

 Radula with no side cusps on middle, lateral or transition teeth ; 

 marginals with bifid inner and simple outer cusp (pi. 60, fig. 10> 

 E.fidelis.') Type E.fidelis, pi. 58, fig. 72. See also pi. 58, figs. 64, 

 65, E. mormonum. 



SOUTH AMERICAN SPECIES. Igp^hragmophora-j-Pilsbrya. 



E. alsophila Phil., iv, 78. E. higginsi Pfr., iv, 79. 

 E. audouini Orb., iv, 81. farrisi Hig., not Pfr. 



v. oresigena Orb. E. huancensis Ph., iv, 79. 



E. claromphalos Dev. & Hpe., E. jaspidea Pfr., iv, 79. 

 iv, 80. plaiysoma Pils., vi, 104. 



v. mesomphalos Mor. E. macasi Higg., iv, 81. 



E. clausomphalos Dev. & Hpe., E. monographa Dor. 



iv, 78. E. patasensis Pfr., iv, 81. 

 E. cuyana Strob., iv, 78. /. minor Pfr. 



E. diluta Pfr., iv, 80. E. pelliscolubri Ph., iv, 80. 



E. estella Orb., iv, 78. E. semiclausa Mts., iv, 80. 



v. tucumanensis Dor., iv, 78. E. trenquelleonis Grat., iv, 82. 



E. farrisi Pfr., iv, 77. E. trigrammephora Orb., iv, 80. 



E. gueinzii Pfr. E. tschudiana Ph., iv, 77. 



E. hidalgonis Dor. E. yocotulana Dor., iv, 81. 

 E. hieronymi Dor., iv, 78. 



(Shell depressed, umbilicate, with a tooth within the basal lip. 



Angrandiella.) 

 E. angrandi Morel., v, 96. Peru. 



MIDDLE AMERICAN SPECIES. 



(Shell hirsute, depressed, with large umbilicus, 2,-grooved behind lip 

 and 2-plicate within. Averellia.) 



E. macneili Crosse, v, 96. Costa Rica. 



(Shell depressed, subdiscoidal, with wide umbilicus ; hirsute. S.-E. 

 Mexico, Cent. Amer. Trichodiscina.) 



