PALEONTOLOGY ZORRITOS FORMATION 91 



Superfamily RHIPIDOGLOSSA 

 Family TURBINIDAE 

 Genus TURBO Linnaeus 



Turbo belli n. nom. 

 PLATE IV Fig. n. 



Callopoma lineatum Nelson, Trans. Conn. Acad., vol. 2, p. 

 186, pi. 6, fig. 2, 1870; not Turbo lineatus of Da Costa, 1778; nor 

 of Lea, 1845. 



''Shell turreted; spire elevated; whorls six, convex. Up- 

 per whorls slightly depressed in front, marked by a few 

 strong, subnodulous ridges, alternating with finer revolving 

 lines. Body whorl very convex, marked above by two 

 strong tuberculose ridges, and laterally and below by a few 

 revolving lines, varying in size, as on the upper whorls. 

 Whole surface marked by very fine and numerous longi- 

 tudinal lines, rather broader than the spaces between them." 

 Nelson, 1870. 



The aperture is round. On the earlier whorls one strong 

 thread forms a marked keel; on the body whorl the keel is 

 broadly nodulous, as is the thread beneath it. The growth- 

 lines noted by Nelson are very regular and distinct. Alti- 

 tude, 15.5; diameter, 15 mm. 



This species is somewhat similar to T. domincensis var. 

 Ictloi Maury, 83 from the Lower Miocene of Santo Domingo, 

 but the whorls of the spire are more angulated, and stand 

 out more prominently than in that species, and the sculp- 

 ture of laloi is broader, the ribs being all fuller. The nodula- 

 tion of the ribs on the shoulder of laloi is more profuse than 

 in lineatum. This species is named in honor of Dr. Fred- 

 erick Keller Bell, of Baltimore, Md. 



Zorritos formation. Zorritos. 



83 Bull. Amer. Pal., vol. 5, No. 29, p. 154, pi. 24, fig. 15, 1917. 



