THE NAUTILUS. 



VOL. XXVII. SEPTEMBER, 1913. No. 5 



NOTE ON A NEW VARIETY OF EPIPHAGMOPHOKA TTJDICULATA. 



BY H. A. PILSBRY. 



This species is widely distributed in the southern part of Cali- 

 fornia where it inhabits regions of quite diverse conditions of 

 climate and soil. As would be expected, it varies conspicuously. 

 Numerous races or local subspecies have been defined. Without 

 entering into any revision of them here, a brief synopsis of the 

 races may be found useful. Typical E. tudiculata Binney. Shell 

 large, solid, copiously malleate, moderately to narrowly umbilicate. 

 Type locality San Diego. 



E. t. cypreophila Cooper. Smaller, thinner, often less malleate. 

 Tuolumme, Merced and Calaveras Counties. Probably a Lower- 

 Sonoran form. 



E. t. umbilicata Pils. Openly umbilicate, solid, finely malleate 

 throughout. San Luis Obispo Co. 



E. t. convicta Hemph. Small, copiously malleate, without a band 

 at the shoulder. San Diego Co. 



E. t. subdolus Hemph. Similar but banded, and a little smoother. 

 Probably Upper- Sonoran. San Jacinto Valley. 



E. t. tularensis Hemph. Perforate, very thin, yellowish citrine 

 or light yellowish olive. Fraser's Mill, Tulare Co. 



E. t. binneyi Hemph. " Uniform greenish yellow without blotches 

 or markings except a very faint trace of a band at the periphery. 

 Mountains of San Diego Co." 



E. t. grippi n. subsp. PI. 3, figs. 15, 16, 17. 



The shell is thin, imperf orate, more globose than tudiculata, 



