94 BOIDJ!. 



Epicarsius, Fischer, I. c. 



Homalccliilus, Fischer, I. c. p. 100 ; Jan, I. c. p. 85. 



Piesigaster, Seoane, Abh. SencJc, Ges. xii. 1880, p. 217. 



Anterior maxillary and mandibular teeth very long. Head 

 distinct from neck, covered with shields, which may be small and 

 irregular or large and symmetrical ; a pair of internasals and a pair 

 of anterior prcefrontals constantly present ; nostril between two or 

 three nasals ; loreal shield present ; labial pits, if present, shallow. 

 Eye moderate, with vertical pupil. Body more or less compressed ; 

 scales small, smooth. Tail moderate or long, prehensile ; subcaudals 

 single. 



Tropical America. 



Synopsis of the Sj>eeies. 



I. Scales in 45 to 51 rows; ventrals 223 to 268; several small 



shields between the supraoculars 1. cenehris, p. 94. 



II. Scales in 51 to 65 rows ; ventrals 271 to 302. 



A series of suboculars separates the labials 



from the eye 2. angulifer, p. 96. 



One or two labials entering the eye 3. striatus, p. 96. 



III. Scales in 33 to 45 rows ; a single large shield (rarely broken 

 up) between the supraoculars. 



Supraocular nearly as large as the frontal ; 



ventrals 261-286 ; subcaudals 60-80 .... 4. inornatus, p. 97. 

 Supraocular about half as large as the frontal ; 



ventrals 250-265 ; subcaudals 70-80 5. forcUi, p. 98. 



Supraocular about half as large as the frontal ; 



ventrals 282-289 ; subcaudals 100-103 . . 6. gracilis, p. 98. 



1. Epicrates cenehris. 



Seba, Thcs. i. pi. Ivi. fig. 4 (1734), & ii.pls. liv. fig. 3, Ixxxviii. fig. 1, 



& xcviii. (1736). 

 Boa cenchria, Linn. 3£us. Ad. Frid. ii. p. 41 (1764), and S. N. i. 



p. 374 (1766) ; Wied, Abbild. (1822), and Beitr. Nat. Bras. i. 



p. 219 (1825) ; ScMeg. Phys. Serp. ii. p. 385, pi. xiv. fi^s. 3-5 



(1837). 

 cenehris, Gmel. S. N. i. p. 1083 (1788) ; Schneid. Hist. Awph. 



ii. p. 250 (1801) ; 8kaw,Zool. iii. p. 344, pi. xciv. (1802) ; Schneid. 



Benlischr. Ak. Miinch. vii. 1821, p. 120. 



aboma, Baud. Rept. v. p. 132 (1803). 



ternatea, Baud. t. c. p. 153. 



annulifer. Baud. t. c. p. 202, pi. Ixiii. fig. 3 ; Merr. Ann. Wetter. 



Oes. ii. 1810, p. 51, pi. ix. ; Schneid. I. c. p. 127. 

 Draco ocellatus, Ohen, Lehrb. d. Naturg. iii. p. 277 (1815). 

 Epicrates cenchria, Gray, Griff. A. K. ix., Syn. p. 96 (1831), and 



Cat. p. 96 (1849) ; Garm'. Proc. Am. Philos. Sac. xxiv. 1887, 



p. 279. 

 cenehris, Bum. 8f Bibr. vi. p. 555 (1844) ; Jan, Icon. Gen. p. 89, 



1. 8, pi. i. (1865). 

 maurus. Gray, Cat. p. 96. 



