198 TURRITELLA. 



T. ciNGULiFERA, Sowb. PI. 59, figs. 38-41. 



Slender, with about twelve whorls, contracted beneath the 

 deep suture, then rounded, with a number of thin, elevated 

 spiral striffi ; whitish to yellowish brown, chestnut banded next 

 the suture, sometimes with undulating transverse chestnut lines 

 or a central chestnut band made up of two or three close parallel 

 lines on the last whorl. Length, -75 inch. 



Audralia. 



The tj'pe is lighter colored than usual ; T. fragilis, Kiener 

 (fig. 39j, better represents the ordinary appearance of the species, 

 whilst T. fusco-cincta Petit (fig. 40) is a variety with diflferent 

 development of the ridging, and 2'. parva, Angas (fig. 41), is a 

 juvenile. 



Section Haustator, Montfort, 1810. 



T. GONiosTOMA, Yal. PI. 60, figs. 51, .')2 ; PI. 61, figs. 53-57. 



Whorls 18 to 20, flattened in the middle, with fine spiral strite, 

 and sometimes a few more prominent ridges ; when the latter 

 are present they usually define the flattened area above and 

 below, with occasionally some intermediate ridges upon the 

 area, and a number of stronger ridges on the base of the body- 

 whorl ; ridges sometimes irregularly nodulous ; first whorls of 

 the spire unicarinate in the middle; whitish, thickly marbled, 

 speckled and irregularly stiigate with chestnut or chocolate- 

 color. Length, 4-6 inches. 



Fai/ta, Fei'Li to Mazallan. 



The sj'nonyms include T. Brodet'ipiana, d'Orb. (fig. 53), and 

 T. Californica, Brod. (teste d'Orb.) ; T. marmorata, Kiener (fig. 

 54); T. lenUginosa, Reeve (fig. 55); T. punctata^ Kiener (fig. 

 56), and T. Banksii, Reeve (fig. 57), a juvenile. This list com- 

 prises shells nearly smooth, and those with strong revolving 

 ridges, also both slim and stout specimens, and shows a varia- 

 bility which, if common to other species of the genus, would 

 largely reduce their number. The specimens before me fully 

 suflfice to make out the S3'nonymy as I have given it. 



T. VARiEGATA, Linn. PI. 61, fig. 58 : PI. 62, figs. 63, 64. 



Whorls 15 or 16, the first few earinated in the middle, the rest 

 flattened, swollen above the suture, with four or five distant 



