Paleontology Zorritos Formation 39 



surface above the keel being concave and below straight. 

 On the spire the sculpture is of growth-lines, poorly defined, 

 only. On the body whorl are sixteen or seventeen spiral 

 bands, separated by narrow interspaces, with growth-lines 

 in the interspaces. The spiral sculpture is weaker near the 

 shoulder. The shoulder of the body whorl is sharp, the 

 surface below being straight. Aperture fairly narrow, of 

 constant width, the columella slightly reflexed at the base. 

 Height, 37; diameter, 17 mm. 



This species is closely related to a group of small cones 

 from the Antillean-Carribean region. It is perhaps closest 

 to C. tortiiosostriutus Toula,^® from Gatun ; it differs only 

 in having simple instead of differentiated spiral sculpture, 

 and in lacking the beaded keels characteristic of tortuosos- 

 triatus. It is also similar to Conns muUiliratus var. gaza 

 Johnson and Pilsbry,^" from Gatun, Bowden, and Santo 

 Domingo and Zorritos, but it is more slender, and has 

 broad-topped ribs on the body whorl instead of the finer 

 spirals of gaza. C. imitator Brown and Pilsbry,-® from 

 Gatun, diflfers in having 16 ribs on the lower half of the 

 body whorl instead of 16 over the entire surface, and in 

 having the profile of the spire concave instead of straight. 

 The spire of hocapanensis diflFers in similar way from that 

 of C. planiliratns Sowerby,-^ from Santo Domingo; the 

 profile is straight in lines instead of concave. 



Lower Zorritos. Xorth of Quebrada de Boca Pan. 



Conns berryi n. sp. 

 Plate I — Fig. 4. 



Shell small, biconic, the altitude Httle more than 1.5 times 

 the diameter, and the cone of the body whorl about 1.5 times 



^Jahrb. k.k. geol. Reichs.. Bd. 61, p. 508, pi. 31, fig. 22, 1911. 

 '' Proc. Ac. Xat. Sc. Phila., vol. 63, p. 342, pi. 23, figs. 2, 3, 191 1, 

 as (Coitus ga::a). 

 ™Idem., fig. 4. 

 ^ Maury, Bull. Amer. Pal., vol. 5, Xo. 29, p. 45, pi. 7, fig. 10, 1917. 



