FAMILY COLUBERID. Al 
described as ceruleus by Linneus ; always supposing an error to exist in his enumeration of 
the subcaudal plates. 
The Grass Snake is found from Massachusetts to Pennsylvania. It is also seen, but not 
abundantly, in Ohio. 
(EXTRA-LIMITAL.) 
C. guttatus. (Horsroox, Vol. 2, pl. 24.) Smooth. Reddish brown above, with a series of deeper 
C. 
C. 
C. 
C. 
red large blotches, margined with dusky ; beneath white, with quadrate black spots. Abdominal 
plates, 126; caudal, 64. Length four to six feet. Southern States. 
. coupert. (Ip. Vol. 3, pl. 16.) Head triangular, thick. Scales very large, bluish black. Beneath 
bluish black, and reddish about the throat. Length ten to twelve feet. Carolina, Georgia. 
. sayt. (Ip. Vol. 4.) Large. Body robust, elongated, black, covered with numerous small rounded 
yellowish white spots over the head, body and tail. Alabama. 
testaceus. (Ip. Vol. 3, pl. 13.) Body above pale, sanguineous or testaceous; beneath sanguineous, 
immaculate. Abdominal plates, 198; caudal, 80. Length five feet. Rocky Mountains. 
. quadrivittatus. (Ip. Vol. 1, pl. 21.) Carinate. Greenish clay-color above, with four longitudinal 
bands; yellowish beneath. Abdominal plates, 233; caudal, 90. Length 4-6 feet. Carolina, 
Florida. 
. occipitomaculatus. (Storer, Mass. Rep. p. 230.) Small. Greyish, with an indistinct lighter band 
along the back; three large white spots behind the occipital plates. Scales smooth. Abdominal 
plates, 124; caudal, 38. Length 10+5. Massachusetts. 
obsoletus. 
rhombomacaatas (Hoxsrook, ined.) 
doliatus. 
GENUS TROPIDONOTUS. Kuhl. 
Head oblong ovate, depressed, distinct. Two nasal plates. Eyes moderate ; pupil round. 
Loral plate single ; anterior orbital plate the same. Scales sub-hexagonal, notched poste- 
riorly, elongated and strongly carinated. 
Oss. The animals of this genus possess the power of elevating the ribs, and are thus ena- 
bled to flatten the body. This enables them to swim well, and hence they are all more or 
less aquatic. In this State four species have been observed. 
Fauna — Part 3. 6 
