314 AMERICAN JOURNAL 



6. Holospira Newcombiana, Gabb. 



Plate 15, figure 33. 



Large, slender, tapering ; whorls eleven and a half, flattened, 

 the last subangular in the middle ; aperture with widely expand- 

 ed lip which is continuous ; surface with fine irregular, undula- 

 ting and occasionally broken ribs, radiately and obliquely dis- 

 posed, the interstices crossed by microscopic revolving lines. 



Length 1-9 inch, diam 'SS in. 



Lower California. 



Family LIMACID^. 



This Family includes the so-called naked snails or slugs, 

 which possess a small shield-like shell concealed beneath the 

 mantle of the animal. 



The following Family, Arionidce, possesses a few calcareous 

 agglomerated granules only, instead of the shell ; and the third 

 family of Snails, the Philomycenidce, have no vestige of a shell. 



LIMAX. 



Subgenera. 



EuLiMAX, includes species JVos. 1, 2, 3 and 4. 

 Amalia, includes species No. 5. 



1. Limax flavus, Linn. 



Plate 16, figure 3. 



Yellowish brown, covered with lighter colored longitudinally- 

 disposed spots ; surface granulate, the granules smaller and con- 

 centrically arranged upon the mantle ; posterior termination 

 acute and keeled. Base dirty white. 



Length 3 to 4 inches when fully extended. 



Seaports, (introduced from Europe) inhabiting cellars. 



