Vol. X] BERRY—SOME UNDESCRIBED CALIFORNIAN HELICES 55 



Remarks: This large and fine race cannot be confused with 

 any of the described subspecies of tudiculata, unless it be the 

 E. t. imibilicata Pilsbry from San Luis Obispo County. The 

 latter is likewise a relatively depressed, finely malleate, umbili- 

 cate form, but is well distinguished from its Sierran relative by 

 its smaller, less tumid, heavier, and much more solid shell, 

 lighter color, more conspicuous banding, and more polished 

 surface. 



Epiphragmophora traskii chrysoderma, new subspecies 



(Plate 4, figs. 2a-2c) 



Diagnosis: Shell as a whole depressed-conic in outline, 

 moderately thin; whorls convex, the body whorl quite tumid. 

 Umbilicus narrow, deep, little flaring, permeable; contained 

 about eleven times, or a little less, in the diameter of the shell. 

 Aperture only moderately oblique (30°). Peristome little 

 thickened ; only slightly reflected except over the umbilicus, 

 the circular outline of which it barely indents ; edges connected 

 by a thin callus. 



Nuclear whorls worn in type, but in other specimens very 

 finely papillose and radially wrinkled, with obliquely slanting 

 lines of larger, more regular, distant papillae superimposed. 

 Following whorls very finely wrinkle-papillose, usually more 

 or less eroded. Growth lines as a rule comparatively weak, but 

 stronger at sutures and becoming very strong on body of later 

 whorls. Definite spiral sculpture hardly recognizable till latter 

 part of fourth turn, but developing on fifth whorl into a some- 

 what wrinkly system of incised spiral lines visible to the naked 

 eye, though more or less cut up by the intersecting growth 

 lines ; on the body whorl the whole complex strongly developed 

 over its upper portion, becoming gradually weaker, but still 

 very distinct, on the base. 



Periostracum very thin, strongly dehiscent and almost impos- 

 sible to preserve in dry specimens ; very light golden brown 

 (honey yellow of Ridgway) in color, sometimes showing 

 streaks of a darker hue following the stronger lines of growth, 

 but without any distinct spiral banding or other evident pat- 

 tern. Shell beneath the periostracum pure white. 



