BUMMULU8. 



Section Ataxas Alters, 1850. 



Long-conic, with 7-11 whorls coiled around a large, deep umbili- 

 cus. Type B. umbilicaris. Peru. 



B. umbilicaris Soul., x, 130. B. huayaboensis Dautz., J. de C., 



B. infundibuliformis Jay. 1902. 



B. infundibulum Pfr., x, 131. v. attenuata and rudis. 



v. umbilicatellus Pils., x, 131. B. moniezi Dautz, xiv, 136. 

 B. tubulatus Morel., x, 132. f. albescens Dautz. 



B. scalaricosta Morel., x, 132. 



Section Bostryx Troschel, 1847. 



Turreted, wrinkled, the last whorl or two free or separated by deep 

 sutures; umbilicus inconspicuous. Type B. solutus. Peru, Chili. 



B. solutus Trosch., x, 133. B. holostoma Pfr., x, 134. 



Section Geopyrgus Pils., 1896. 



Turreted, tapering, rimate, composed of 9-10 whorls. Peru. 

 B. turritus Brod., x, 135, 200. 



Section Geoceras Pilsbry, 1896. 



Column-shaped, composed of 16-19 narrow whorls. Type B. 

 columellaris. Andes of Peru. 



B. columellaris Rve., x, 136. B. veruculum Morel., x, 137. 

 B. cuspidatus Morel., x, 137. 



Section Peronaus Alb., 1850. 



Rimate or perforate, long-fusiform, slender, with 7-11 whorls. 

 Type B. pupiformis. 



( Group of B. pupiformis. Chili, Peru.) 



B. pupiformis Brod., x, 138. B. baeri Dautz., xiv, 135. 



B. anachoreta Pfr., x, 139. B. iocosensis Dautz., xiv, 135. 



B. lactifluus Pfr., x, 140. B. emaciatus Morel., x, 143. 



B. atacamensis Pfr., x, 140. B. spiculatus Morel., x, 144. 



B. longurio Crosse. B. acromelas Morel., x, 144. 



B. nanus Rve., x, 141. B. lichenorum Orb., x, 145. 

 B. Ifucostictus Phil., x, 141. lichnorum Orb. 



*. scabiosus Sowb., x, 142. lichenvm Beck. 



J. terebralis Pfr., x, 142. B. subcactorum Pils., x, 145. 



B. bisculptus Pfr., x, 142. B. tschudii Trosch., x, 146. 



