CERION, GROUP XI. 253 



Form elongatum (Maynard). PI. 39, figs. 4, 5. 



Somewhat more tapering above, with slightly more numerous rib- 

 lets, 33 on the last whorl; parietal tooth very large, prominent and 

 double. Length of type 33^, diam. 12^ mill. Varies from 36^x13 

 to 30fxll mill. Dead specimens only were found on a little key 

 about a mile north of U Key, at Allen's Harbor. 



C. GLANS (Kiister). Plates 40, 41, 42, 43. 



Shell cylindric or long ovate, white, blue-white or cream-white, 

 uniform or mottled or striped with brown, ochre or purple-brown ; 

 often dull and lustreless ; ribbed more or less strongly, usually with 

 20 to 30 ribs on the penultimate whorl. Aperture irregularly ovate, 

 brown or ochraceous within, the lip expanded or reflexed, usually 

 thickened; parietal callus generally thick, often raised, forming a 

 straight ridge or ledge. 



Bahamas : New Providence and Andros with the immediately adja- 

 cent keys and islets ; Gun Cay. 



Pupa glans ROSTER, Conchyl. Cab., p. 74, pi. 11, f. 1, 2 (1848 or 

 earlier). PFR., Monogr., ii, p. 310; viii, p. 355 SOWERBY, C 1 . 

 Icon., pi. 1, f. 2a. 



Pupa variu BONNET, Revue et Magazin de Zoologie (Ser. 2), xvi, 



p. 71, pi. 6, f. 3a, 36, 4 (1864). PFR., Monogr., vi, p. 291 C. 



glans varium Bonnet, PILS. AND VAN., Proc. A. N. S. P. 1896, p. 

 324 ?Pupa zebra Weinland, SOWERBY, Conch. Icon., xix, pi. 2, 

 f. 12a, 126 (May, 1875) Strophia curtissii MAYNARD, Contribu- 

 tions to Science, ii, No. 3, p. 107, f. 33 (December, 1894) S. cur- 



tissi nivea MAYNARD, t. c., p. 112, f. 34J (on p. 117). Strophia 

 thorndikei MAYNARD, t. c., p. 116, f. 34j9,C,Z). Strophia cinerea 

 MAYNARD, t. c., p. 119, f. 35 Strophia cinerea robusta MAYNARD, 

 t. c., p. 121, f. 36. Strophia cinerea tracta MAYNARD, t. c., p. 123, f. 

 37 A Strophia cinerea mutata MAYNARD, t. c., p. 125, f. 37 JR. 

 Strophia albea MAYNARD, t. c., p. 128, f. 38. 



Strophia c.oryi MAYN., t. c., p. 129, f. 30. S. neglecta MAYN., 

 t. c., p. 150, f. 47. S. neglecta agava MAYN., t. c., p. 152, f. 48. 

 S. carlotta MAYN., t. c., no. 4, p. 154, f. 49 (Dec., 1894). 



S. glans Kuester, MAYNARD, t. c., p. 156, I. 50. S. glans grista 

 MAYN., t. c., p. 159, f. 51. regula MAYN., t. c., p. 161, f. 52 

 >'. birnargincita MAYN., t. c., p. 164. f. 53. $. b. cera MAYN., t. -., 

 |>. K'8. f 54. S. piJsbryi MAYN., t. c.. p. 170. f. 55. S. p. n'ulra 



