20 Binney on Terrestrial Molhisks. 



viduals. In the mature shell the peristome is slightly- 

 reflected, and has the remarkable deflection which charac- 

 terizes H. Vancouver ensis and H. concava. 



Found at San Diego by Dr. J. S. Newberry, and in 

 Contra Costa Co. by Mr. J. H. Thomson. The latter 

 gentleman's notes show the animal to be quite distinct 

 from that of H. concava Say, however similar the shells 

 may be, with the exception of the striae on the Californian 

 species. He writes, " Animal uniformly white or flesh- 

 colored, with an orange line on top of back. Solitary — 

 or only found in pairs." 



HELIX NEWBERRYANA. 



Plate LXXVI. Figure 7. 



Testa late umbilicata ; orbiculato-deprcssa ; solida ; striis tenuibus in- 

 crementi et lineis subtilissimis, spiralibus, leviter graimlato-decussata ; 

 nigra, aut rufo-brunnea, sub epiderme alba ; sutura valde impressa ; 

 spira depressa ; anfr. 6, regulariter accrescentes, superi plani, ultimus 

 convexus, subtus rotundatus, ad aperturain descendens ; umbilicus latus, 

 perspectivus, anfr. omnes ad apicem monstrans; apertura obliqua, trans- 

 verso-lunaris ; in exemplis junioribus, paries aperturalis, sculptura anfr. 

 praecedentis callo levi obliterata, eleganter notata est lineis elevatis, nu- 

 merosis, confertis, spiralibus ; in exemplis maturis, h»c sculptura occulta 

 est callo incrassato, sed intus in anfr. omnibus remanet ; perist. simplex, 

 acutum, intus callosum, marginibus sub-convergentibus, callo albo con- 

 junctis. 



SYNONYMS A1»D REFERENCES. 



Hdix NewbeiTyana W. G. Binney, Proc. Acad. Nat. Sc. of Phila. x. p. 115, 

 Notes, p. 16. May. 1858. 



DESCRIPTION. 



Animal not observed. 



Shell broadly umbilicated ; orbicularly depressed ; solid ; 

 lightly decussated by incremental striae, and numerous 

 fine spiral lines : color black or reddish-brown, under the 

 epidermis white and shining; suture deeply impressed; 

 spire depressed ; whorls 6, regularly increasing, the upper 



