AIR-BREATHING SNAILS AND SLUGS 271 



ArioUmax liemplnlU^ W. G. Binney, Hemphill's 

 Slug, is a small, slender, flesh-colored slug, with a 

 pointed tail, which was first collected at Niles, Cal., 

 though it probably lives in the neighboring parts of 

 the Santa Clara valley. 



Hemphillia glandulosa^ Bl. & Bin., the Hemphil- 

 lia, is a curious little mollusk that lives in Oregon 

 and Washington. When extended it is an inch or 

 two long; but on its back is a hump, and on the hump 

 is a shell, brownish, flattened, and scale-like, one- 

 fifth of the length of the animal. The color is smoky 

 white, with dark brown blotches running from the 

 mantle to the foot. 



Binneya notabilis. Cooper, the Binneya, is a curi- 

 ous Mexican form found on Santa Barbara Island. 

 The shell is ear-shaped, light, thin, and horn-colored. 

 It is not large enough to cover the snail-shaped ani- 

 mal. The shell is from 7 to 14 mm. in length. 



F yramidula asteriscus^ Morse, the Star Snail, is a 

 very small creature, the shell being about one six- 

 teenth of an inch in diameter. When examined with 

 a microscope it shows a low spire and a large um- 

 bilicus, while its four whorls are marked with many 

 sharp cross-ridges. Its color is brown. It is widely 

 distributed, living in wet grass, from New England 

 to California. 



Fyramidula Uneatus, Say, the Lined Snail, has a 

 discoidal shell an eighth of an inch across, in which 

 the four whorls are coiled up almost in the same 

 plane, with raised lines revolving upon them. It is 

 found all over the United States. 



