248 Proceedings of the Biological Society of Washington. 



Epiphragmophora californiensis miwoka, new subspecies. 



Shell of medium size, pale horn colored, extreme apex a little lighter than 

 the rest, marked at the periphery by a chestnut band which is not bordered 

 by lighter zones. Nuclear whorls small, one and a half, finely wrinkled and 

 minutely papillose. Postnuclear whorls strongly rounded, the summit of 

 the succeeding turns falls slightly anterior to the peripheral dark band of 

 the preceding turn, so that this appears in the suture. The whorls are 

 crossed by coarse wrinkles which are decidedly retractively slanting. Be- 

 tween these wrinkles are finer threads which are granulose, the long axes 

 of the granules corresponding in disposition with the lines of growth. In 

 addition to this a few obsolete incised spiral lines are present near the sum- 

 mit. The last turn has all these sculptural elements and in addition is 

 strongly malleated. Periphery and base somewhat inflated, strongly 

 rounded, the latter narrowly umbilicated and marked by coarse wrinkles, 

 but here the fine papulations on the lesser wrinkles are much enfeebled ex- 

 cepting immediately behind the aperture, where they are equally strong. 

 Aperture large, oblique, broadly oval; peristome expanded and partly re- 

 flected, white; interior of aperture bluish white, showing the peripheral 

 color band within. 



The type, Cat. No. 336,832, U. S. N. M., and ten specimens of this species 

 were collected by Mr. H. N. Lowe at Pt. Reyes, Calif., in May, 1918. Five 

 of these taken at random yield the following measurements : 



