324 
SPANISH-TOWN. 
the rostrum of the insect inserted beneath the scales 
of the body, by which they were nearly concealed. 
The form assumed by the pupil of the eye, a narrow 
perpendicular line, which gives so very sinister an 
expression to the physiognomy, indicates a nocturnal 
activity. The pupil is round in the Coluhridce, 
Our Yellow Snake is replaced in Cuba by another 
form of the same family, very similar in appearance, 
Epicrates angulifer. 
Probably other Ophidians remain to be described. 
Mr. Purdie, in his Botanical Tour (Lond. Journ. Bot. 
iv. 18.), thus speaks of a Serpent which he saw near 
Agley Gap, in the eastern part of the Island : “ On 
a loose rock I observed a large and remarkable Snake, 
striped like a zebra; but on my attempting to cap- 
ture the creature, it disappeared among the rocks. 
THE PARDALINE SNAKE. 
To the kindness of my friend Mr. Hill I am 
indebted for the knowledge of a pretty little Snake, 
placed by naturalists in the family of the Boas, yet 
possessing so many of the characters of the Colubers, 
that it must be considered as one of the connecting 
forms of the two groups. It was described under 
the name of Leionotus maculatus, by M. Bibron, 
in 1840, in the History of Cuba, by M. Ramon de la 
Sagra, a new genus being instituted for it. In the 
same year, M. Gundlacher, in the Archiv. natur- 
gesch. von Wiegmann, described it as Boa pardalis, 
Mr. J. E. Gray has given it the generic appellation 
of Ungalia* 
