XXIV BUL1MULUS. 



Section Ataxas Albers, 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. infundibulifortnis 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. soltttus. Peru, Chili. 



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



Section Geopyrgus Pils., 1896. 



Turreted, tapering, rimate, composed of 910 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 Peronmts Alb., 1850. 



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

 Type B. pupiformis. 



(Group of B. papiformis. 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. Icucostictus Phil., x, 141. tichnorum Orb. 



B. scabiosus Sowb., x, 142. lichenum Beck. 



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



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



