134 



THERSITES. 



T. oconnellensis Cox, vi, 158. T. 



albofilata Mouss. T. 



T. arthuriana Cox, vi, 159. T. 



T. rockhamptonensis Cox., vi, T. 



planibasis Cox, ms. [159. 



v. moresbyi Aug., vi, 160. T. 

 v. pallida Hedl. & Mss. viii, 281. 



T. informis Mouss., viii, 282. T. 



T. palmensis Braz., vi, 160. T. 



v. meridionalis Braz., vi, 161. T. 



T. belleudenkereusis Braz., vi, T. 



[161. 



T. parsoni Cox, vi, 162. T. 



T. appendiculuta Pfr., vi, 163. T. 



T. seminigra Morel., vi, 162. T. 



lessoni Pfr., olim., et auct. T. 



? =incei var. T. 



T. incei Pfr., vi, 166. T. 



v. aureedensis Braz., viii, 282. T. 



v. bayensis Braz., vi, 166 ; viii, T. 



[282. T. 



T. thatcheri Cox, vi, 164. T. 



T. hilli Brazier, vi, 164. T. 



mazee Braz., vi, 165. 

 hanni Braz., vi, 166. 

 prsetermissi Cox, vi, 167. 

 rnulgravensis Braz., vi, 168. 



mulgravei Braz. 

 curtisiana Pfr., vi, 168. 



bala Braz., vi, 169. 

 johnstonei Braz., vi, 170. 

 creedi Cox, vi, 170. 

 wesselensis Cox, vi, 170. 

 sardalabiata Cox, vi, 171. 



xtephensoniana Braz. 

 whartoni Cox, vi, 171. 

 mourilyana Braz., vi, 172. 

 yulei Forbes, vi, 172. 

 challisi Cox, vi, 173. 

 nicomede Braz., vi, 173. 

 beddonu Braz., vi, 174. 

 bebias Braz., vi, 175. 

 cookensis Braz., vi, 175. 

 tomsoni Braz., vi, 175. 

 broadbenti Braz., vi, 176. 

 hixoni Braz., vi, 177. 



Subgenus XANTHOMELON v. Martens, 1860. 



Xanthomelon MTS., in Alb., Die Hel., p. 174, type H.pomum-, 

 Mai. Blatter xvi, p. 77, 1869. PILS., Man. Conch., vi,p. 178. For 

 anatomy, see SEMPER, Reisen, p. 160, pi. 14, and MEDLEY, P. R. S. 

 Q., vi, p. 250, pi. 14, and p. 121, pi. 8. 



Shell large, solid and globular, the spire small, body-whorl large, 

 globose, descending to the aperture, which is semioval and some- 

 what oblique. Peristome narrowly expanded, thickened within ; 

 columellar lip broad, flattened, partly or wholly covering the axial 

 perforation; surface somewhat roughened, covered with a yellow 

 cuticle. Type T. pomum, pi. 27, fig. 6. 



Jaw stout, arched, with 8 (perinflata) to a dozen (pachystyla') stout 

 ribs, obsolete toward the ends (pi. 32, fig. 47, pachystyla). 



Radula as in Sphcerotpira etc. (pi. 32, fig. 46, pachystyla). 



Genital system having the penis rather short and stout, twisted at 

 its apex, where the retractor-muscle and vas deferens are apparently 



