AULOPOMA. MYXOSTOMA. CYCLOPHORUS. 15 



Mjxostoma Troscliel in Menke, Zeitsch. f Malak. 1847, 44. ; 



Pfeiffer in Menke und Pfeiffer, Z.f Malak. 1847 ; Gray, Proc. 



Zool. Soc. 1847, 182. 

 Lituus Marty n, U. C. 1784; Humph. Mm. Calonn. 1797, not 



Breyn, 1732; Gray, Proc. Zool. Soc. 1847, 182. 



1. Myxostoma breve. 



Lituus breve Marty7i, Un. Conch, t. 28. 



Cyclost. Petiverianum Gray, Wood's Cat. Supp. t. 6. f. 2. ; Sow. 



Thes. Conch. 1. 116. n. 74. t. 25. f. 100, 101. 

 Cyclost. breve Pfeiffer, Kuster ^ Chemn. Conch. Cab. i. 19. t. 24. 



f. 1, 2. 

 Myxostoma breve Pfeiffer, 1. c. 111. n. 1. 



a. ? 



6. CYCLOPHORUS. 



Operculum horny, thin, closely vvhorled, more or less concave 

 externally. — Shell globose, turbinate ; either depressed or dis- 

 coidal. Peristome continuous ; expanded or straight. 



Cvclophorus Montf. Conch. Syst. ii. 290. 1810 ; Blainv. Man. Malac. 

 '435. 1825; Gray, Proc. Zool. Soc. 1847, 182.; Pfeiffer in 

 Menke und Pfeiffer, Z.f. Malak. 1847, 106. 

 Cyclophora Swains. Malac. 185. 336. 1840. 

 Annular ia a Schum. Ess. 1817. 

 Annularia Gray, Syn. B. M. 1842, 91. 



§ Turbinate. 

 * Axis umbilicated, open. 



1. Cyclophorus aurantiacus. 



Cyclost. aurantiacum Pfeiffer, Kuster, Chemn. Conch. Cab. 31. 



n. 22. t. 4. f. 8, 9., i. 19. t. 23. f. 45. 

 Cyclost. pernobile Goidd, Post. Jour. 1844, 458.' t. 24. f. 11.; 



Pfeiffer, Kuster, Chemn. Conch. Cab. 30. n. 21. i. 19. t. 3. f. 15. 

 Annularia aurantiaca Schum. Nouv. Syst 196. 

 Turbo volvulus var. Chemn. ix. 58. t. 123. f. 1064, 1065. 

 Helix volvulus y Mull. Hist. Verm. ii. 83. 

 Cycloph. aurantiacus Pfeiffer, 1. c. 107. n. 1. 



Hab. Burmah ? 



2. Cyclophorus speciosus. 



Cyclostoma speciosum Philippi, Zeitsch. fiir Malak. 1847, 123. 

 n. 60. ; Pfeiffer, Kuster, Chemn. Conch. Cab. i. 19. t. 25. f. 1—3. 

 Cycloph. speciosus Pfeiffer, 1. c. 107. n. 2. 



Hab. ? 



