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University of California Publications in Geology [Vol. 10 



CANCELLAEIA EAPA, n. sp. 

 Plate 11, figures 1, la 

 Type specimen no. 11097, Univ. Calif. Coll. Invert. Palae. 



Shell thick, ventrieose, with about five or six rapidly enlarging, 

 regularly convex whorls, apex rather blunt. Suture marked by a dis- 

 tinct line, slightly appressed. Sculpture consisting of spiral ridges 

 crossed by low axial riblets. Spiral sculpture on the body-whorl 

 marked by about eighteen nearly square major ribs ; between most of 

 these are less prominent intercalaries with interspaces narrower than 

 the latter. Axial riblets not regularly spaced, nearly obsolete, be- 

 coming entirely so on lower half of body-whorl. Aperture semilunar, 

 outer lip broken, forming a short canal at base. Pillar thinly incrusted 

 and with four plaits, of which the middle and lowest are less prominent. 

 Height of type, 53 mm. ; diameter, 29 mm. 



Occurrence. — The type in the University of California collections, 

 obtained by L. D. O'Neal, is labeled as having come from the 

 Pliocene ( ?) near Coalinga, Fresno County, California. 



