PLATE XXVIIL 



PAO 



Fig. 46. ? ANCHTJBA CARINIFERA. Magnified. 160 



Fig. 48. HKLICAULAX COSTATA. Magnified. 167 



Fig. 49. LOXOTREMA TUKRITA. Natural size. 168 



Fig. 50. ATRESIUS LIRATUS. Magnified. 169 



Fig. 51. TURRITELLA MARTiNEZENSis. Natural size. 169 



Fig. 52. NERITA (THELIOSTYLA) TRIANGULATA. 170 



Magnified view of the back. 

 52 a. Front view. 



Fig. 53. CALLIOSTOMA RADIATTJM. Magnified. 170 



Fig. 54. ATAPHRUS CRASSUS. Magnified. 171 



Fig. 55. MARGARITELLA ANGULATA Magnified. 172 



Fig. 56. ACMJSA TEJO.NENSIS. Magnified. 172 



Fig. 57. ACT^OXINA PUPOIDES. Magnified. 173 



Fig. 58. ACTJSONELLA OVIFORMTS. Natural size. 173 



Fig. 59. LIOCIUM PUNCTATUM. Magnified. 174 



Fig. 60. KINGINELLA POLITA. Magnified. 174 



