MUSEUM OF COMPARATIVE ZOOLOGY. 393 



cupies a narrow belt thence southward along the coast, and in the lati- 

 tude of Columbia, South Carolina, begins to expand to the westward. 

 Farther southward its northern boundary passes to the southward of 

 the mountains in Georgia, west of which it rises obliquely northward, 

 and extends in a narrow point up the valley of the Mississippi as far 

 as the mouth of the Ohio. West of the Mississippi it bends again 

 somewhat to the southward. 



The Louisianian Fauna hence embraces the coast of North Carolina, 

 the lowlands of South Carolina and Georgia, nearly all of Alabama, 

 all of Mississippi and Louisiana, nearly all of Arkansas, Western 

 Tennessee, the extreme western part of Kentucky, Southern Missouri, 

 the extreme southern part of Illinois, and a small portion of Eastern 

 Texas. Most of the following species range throughout its entire 

 extent, but appear farther to the northward only as stragglers. The 

 presence of these species, and the absence of those given in the 

 preceding list, will serve to distinguish it from the Floridian Fauna. 

 It is similarly distinguished from the Carolinian Faun* »° w ill be 

 presently shown. 



Species limited in their Northward Range hij the Louisianian Fauna. 



1. Peucaea aestivalis. 13. Chamsepelia passer' ia. 



2. Cyanospiza ciris. 14. Cathartes atratus. 



3. Quiscalus major. 15. Ictinia mississippiensis. 



4. Heliuinthophaga Swainsoni. 16. Elanus leucurus. 



5. Helminthophaga Bachmani. 1 7. Demiegretta ludoviciana. 



6. ?Prothonotaria citrea. 18. Platalea ajaja. 



7. Dendrceca dominica. 19. Ibis alba. 



8. Sitta pusilla. 20. Tantalus loculator. 



9. Antrostomus carolinensis. 21. Porzana jamaicensis. 



10. Campephilus principalis. 22. Plotus anhinga. 



11. Picus boreaiis. 23. Graculus floridanus. 



1 2. Conurus carolinensis. 24. Puffinus obscurus. 



III. Carolinian Fauna. The Carolinian Fauna extends from 

 the northern boundary of the Louisianian Fauna northward to about 

 the isotheral line of 71° F. On the Atlantic coast this fauna includes 

 Long Island and a small portion of Southeastern New York, which 

 form its northern limit. In New Jersey it is restricted to the low- 

 lands, extending westward in Southern Pennsylvania, Maryland, and 

 Virginia to the Appalachian highlands. It embraces the middle por- 



