IV STROPHOCHEILUS. 



Genus CYLINDRUS Fitz. 



Family ACAVID^E Pilsbry. 

 Macroogona Pils., Man. Conch, ix. Additional species are de- 

 scribed in xiii, pp. 122-126. 



Subfamily STROPHOCHILIN.E. 



This group differs from the Bulirmdida by the long kidney, ab- 

 sence of a tubular ureter, copious venation of the cardiac side of the 

 lung; the solid, smooth jaw, etc., etc. Suitable description and 

 illustration of the soft anatomy of the group would occupy undue 

 space in the Manual, and will be given elsewhere ; but as Gonyosto- 

 mus has been associated hitherto with Bulimulince, it has been 

 thought best to include some account of its anatomy here, in order 

 to fix the position of the group. 



Two genera of this subfamily are known, Strophocheilus and 



Gonyostomus. 







Genus STROPHOCHEILUS Spix. 



Man. Conch, x, p. 1. The genus as constituted in vol. x requires 

 some restriction, the group Thaumastus proving by its soft anatomy 

 to belong to the family Bulimulidce. 



Submenus STROPHOCHEILUS s. str. 



S. pudicus Mull., xiv, p. 116. 



almeida Spix. 

 S. planidens Mich., x, 7. 

 S. rhodocheilus Rve., x, 8. 

 S. pilsbryi v. Iher., xiv, 118. 

 S. milleri Sowb., x, 8. 



v. kronei Iher., xiv, 118. 



v. iguapensis Pils., xiv, 119. 



S. calus Pils., xiv, 119. 



S. unidentatus Sowb., x, 9. 



S. erythrosoma Pils., x, 10 ; xiv. 



117. 



pudicus Pfr. 

 S. (?) contortuplicatus Rve., x, 71. 



Subgenus BORUS Alb., 1850. 



Man. Conch, x. pp. 10, 194; xiv, p. 120. 

 and temperate South America. 

 S. popelairianus Nyst, x, 13. 



v. thammianus Mart., x, 14. 



v. dohrnianus Mart., x, 14. 



v. connectens Mart., x, 14. 



Distribution, tropical 



S. maximus Sowb., x, 15. 



v. kremnoicus Orb., x, 16. 

 S. huascari Tschudi, x, 16. 



