1896.] NATURAL SCIENCES OF PHILADELPHIA. 323 



34a. Cerion Abacoense Bendalli Pils. & Van.* PI. XI, fig. 13. 



Abaco. 



35. Cerion Kitchiei Maynard.* Contr. Sci., 1894, Vol. 2, p. 135, f. 41 a. b. 



Highburn Key. 

 36a. Cerion Ritchiei eburneum Maynard.* Contr. to Sci., 1894, Vol. 2, p. 144, f. 

 45 a. b. Costte slightly closer. 



U Key, Exuma group. 

 35b. Cerion Kitchiei elongatum Mayn. T. c. p. 148. 



Same locality as preceding, with which it is probably identical. 

 35c. Cerion RitcMei Grayi Maynard.* Contr. Sci., 1894. Vol. 2, p. 138, f. 42 a. b. 



S. Grayi gigantea Mayn., t. c, p. 141, f. 44 a-, Grayi pumilia Mayn. t. c, p. 

 143, f. 44 b. 



Highburn Key, Bahamas. 

 35d. Cerion Ritchiei Vannostrandi P. & V.» 



Similar to C. Grayi gigauteum Mayn., but smooth and snow-white. 

 Aperture small, built forward, its margins not reflexed. Alt. 40, 

 diam. 16 mm. 



36. Cerion Maynardi P. & V.» Proc. A. N. S., 1895, May 4, p. 210. PI. XI, fig. 31. 



Abaco, Bahamas. 



37. Cerion griseum Maynard.* Contr. to Sci., 1894, Vol.2, p. 159, f. 51. 



S. glans Mayn.* t. c, p. 15, f. 50. Fresh Creek, Andros. 



S. bimarginata Mayn.* /. c., p. 164, f. 53. Green Key. 



S. bimarginata cera Mayn.* t. c, p. 168, f. 54. Green Key. 



S. Pilsbryi Mayn.* t. c, p. 170, f. 53. Goat Key. 



S. Pilsbryi evolva Mayn.* t. c., p. 173, f. 57. Goat Key. 



S. crassicostata Mayn.* mss. Andros. 



Type from about one mile N. of Calabash Bay, Andros. 

 37a. Cerion griseum regulum Mayn.* Contr. to Sci., 1894, ii, p. 161, f. 52. 



Fresh Creek, Andros. 

 37b. Cerion griseum restrictum Mayn.* Contr. to Sci., 1894, Vol. 2, p. 175, f. 58. 



Goat Key. 



38. Cerion glans Kuster.* Conchyl. Cab., p. 74, t. 11, f. 1, 2. 



? Pupa tumiditla Desh. in Fer. Hist., pi. 153, f. 8. 



S. Curlissii Mayn.* Contrib. to Sci., 1894, Vol. 2. p. 107, f. 33. Waterloo, 

 Nassau, N. P. 



S. Curtissii nivea Mayn.* /. c, p. 112, f. 34 a, Waterloo, Nassau, X. P. 



S. cinerea Mayn.* and varieties robuita, tracta and mutata, t. c, p. 119, f. 

 35-37. N. P. 



S, neglecta and var. agava Mayn.* t. c, p. 150, f. 47. N. P. 



S. Carlotta Mayn.* t. c, p. 156, f. 49. Fort Charlotte, N. P. 



S. albea Mayn.* t. c, p. 128, f. 28. Spruce Key. 



S. Coryi Mayn.* t. c, p. 129, f. 39. N. P. 



Kassaii, New Providence, may be considered type locality for C. 

 glans. 



