1214 REPORT OF NATIONAL MUSEUM, 1898. 



The total number of species of the Eastern subregion is thus: 



Generally distributed 7 



Peculiar to Cisalleghenian 3 



Peculiar to Transalleujlieyian 9 



Peculiar to Canadiau 7 



Common to Austroriparian . 34 



Total 60 



II. THE AUSTROHIPARIAN SUBREGION. 



This subregiou is the rauge of a large uumber of species of I>atracliia 

 and Eeptilia, only a part of which occupy it to the exclusion of all other 

 subregions, and another series of which occupy parts only of its area. 

 Three centers of distribution within its borders may be discerned — the 

 Ocimdgiaii, the Louisianimi, and the Texan. The Texan is especially 

 characterized by the combination of the Austroriparian fauna with a 

 considerable number of the species of the Sonoran subregion. The 

 characteristic Austroriparian species are the following: 



TRACJHYSTOMATA. 



Siven lacertina Linnieus. 



URODELA. 



Amphiuma means Garden. 

 Amhlystoma talpo'ideum Holbrook. 

 Manculus quadridigitatus Holbrook. 



SALIENTIA. 



Bufo lentiginosus lentiginosus Shaw. 

 Chorophilus occidentalis Baird and Girard. 

 Jlyla caroUnensis Pennant. 

 Engystoma carolinense Holbrook. 



LORICATA. 



Alligator mississlppiensis Daudin. 



SAURIA. 



Ophisaurus ventralis Daudin. 

 Anolis caroUnensis LiuuaBUS. 



SERPENTES. 



Heterodon sinius Linnseus. 

 Cyclophis a'stivns Linnieus. 

 Zamenis fiagelliformis Catesby. 

 Coluber spiloides Dumeril and Bibron. 

 Gompsosonia corais couperii Holbrook. 

 Osceola doliata, syspila Cope. 



