PLEKOCHElLL'S, TH AUMASTUS. xtx 



Group of P. succinoides. 



P. cathcartiae Rve., x, 82. P. succinoides Pet., x, 84; xiv, 128. 



P. (?) victor Pfr., x, 82. B. succineoides Mart. 



P. jucundus Pfr., x, 82. Succinea bulimoides Pfr. 



P. quadricolor Pfr., x, 83. B.. latilabris Pfr. 



P. dalmasi Dautz., xiv, 128. P. calliostoma Dohrn, x, 85. 



P. argenleus Jouss., xiv, 128. 

 P. veranyi Pfr., x, 83. 

 var. scytodes Pfr., x, 84. 

 sytodes Ads., x, 199. 



Group of P. castaneus. 



P. castaneus Pfr., x, 85; xiv, 131. P. jimenezi Hid., x, 86, 199. 

 P. elaeodes Pfr., x, 86. B. gibbonius Hid. olim. 



P. aristaeus Crosse, x, 88, 199. 



Group of P. taylorianus. 



P. piperitus Sowb., x, 89. P. superstriatus Sowb., x, 91. 



P. pulicarius Bk., xiv, 132. var. prodeflexas Pils., x, 91. 



P. piperatoides Pils., xiv, 132. P. aureonitens Mill., x, 91. 



P. pseudopiperatus Mor., x, 89. P. tricolor Pfr., x, 87; xiv, 131. 

 P. taylorianus Rve., x, 90 ; xiv, var. semipictus Hid., x, 87. 



132. ? Sirnpulopsis fulgurata Mill., 



E. taylorioides Mill. xii, 227. 



Group of P.floccosus. 



P. floccosus Spix, x, 92. P. onca Orb., x, 93. 



P. lacrimosus Heimb., x, 199. B. onza Alb. 



P. pintadinus Orb., x, 93. P. lynciculus D. & H., x, 94. 



Helix pentadina Orb. P. semperi Dohrn, x, 94. 



Genus THAUMASTUS Albers, 1860. 



Thaumastus ALB., as restricted by Pilsbry, Man. Conch, x, p. 43, 



type T. hartwegi Pfr Orphnus ALB., preoc, type B. taunaisn.- 



Orphaicus Schaufuss, in Paetel's Catal. 1864, p. 14, proposed as a 

 substitute for Orphnus Tatutor Jouss., 1887, type T. tatutor. 



Shell rather large, narrowly umbilicate or imperforate, long-ovate 

 with lengthened spire and blunt apex ; moderately solid, opaque, 

 nsually dark, streaked, and generally having a light peripheral band. 

 Nepionic whorls 2J to 3, sculptured with fine vertical waved or inter- 





