GREAT BOA. 
GENERIC CHARACTER. 
Body covered with scales ; those under the abdomen and 
beneath the tail undivided. 
SPECIFIC CHARACTER. 
Boa Constrictor. B. griseo-flavescens, catena dorsalicastanea, 
maculis. lateralibus subtrigonis. 
Yellowish gray, with a large chestnut-co- 
loured chain-like pattern down the back, 
and subtrigonal spots on the side. Shaw 
Gen. Zool. 3. p. 337. pb 92. 
Boa maculis variegatis rhombeis. Boddaert 
Nov. Act. Ac. Cces. *]. p. 18. no. 5. 
Serpens Americana arborea. Seb. 1. pi. 53. 
Constrictor Boa. La Cepede Ovip. 
Quadr. 4. p. igo. pi. 7. hg. 1. 
Great Boa. . . Nat. Misc. 2. pi. 51. 
This most formidable serpent frequently measures 
from twenty to thirty, and even thirty-five feet in 
length. It far exceeds every other species in size, 
as well as in strength and beauty. The ground 
colour of the animal, in the younger specimens, ac- 
cording to Dr. Shaw, is a yellowish gray. A series 
of large chain-like reddish brown variegations are 
VOL. 11. 
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