60 THE CHICAGO ACADEMY OF SCIENCES. 
demarcation extends northward across Maryland, including Delaware 
and New Jersey south of the 40th parallel. 
15. Nova Scotian. This area includes the greater part of the 
New England states, the southeastern portion of New York, the east- 
central portion of Pennsylvania, northern New Jersey, Virginia, the 
greater part of Maryland, the whole of Nova Scotia, New Brunswick, 
and probably Newfoundland. The drainage is into the Atlantic Ocean. 
Its southern limit is the Potomac River and the 40th parallel in New 
Jersey. 
16. CrentTrAL AMERICAN. This includes all of Central America 
from the Isthmus of Panama northward. It embraces all of Mexico 
excepting the higher tableland, including Lower California, taking in 
both the Pacific and Gulf coasts. The drainage is into the Pacific 
Ocean on the west and into the Gulf of Mexico and the Caribbean 
Sea on the east. It is possible that this area should be further sub- 
divided, but too little is known of its aquatic pulmonate fauna to war- 
rant such a course at present. - 
1%. West Inp1an. For the present purpose the islands of the 
West Indies may constitute a single province, the Lymnzid fauna, so 
far as recorded, being apparently the same in the different islands. 
18. GREENLANDIAN. Little is definitely known concerning the 
distribution of the Lymnzas in the region known as Baffin Land, and 
the relation of this territory faunally to Greenland; whatever this 
relation may be ascertained to be, it seems advisable to institute a 
faunal region for Greenland, at least. 
