94 REPTILES. 



black spot: loreal shield square: anterior ocular large; posterior 

 oculars 3, small : inter-loreal scales 2, small. The front of the body- 

 has a narrow longitudinal streak on each side, between the spots. 



a. In spirits. N. Australia, Port Essington. From Mr. Gilbert's 

 collection. 



B. Subcaudal plates entire ; intermaxillary or incisive teeth none ; 

 supra-orbital bone none ; scales smooth or keeled ; head-scales 

 subsymmetrical. 



Boa and Corallus, Baud. Constrictores pars, Oppell. Pytho- 

 nieus, Aproterodontes, Boaeides, Dnm. ^ Bib. Erp. Gen. vi. 450, 

 474. Centrophes, Hempr. Fitz. Syst. Rept. 24, 1843. 



a. Scales smooth ; labial shields pitted. 



6. Epicbates. 



Head covered with scales, and with shields on the front half; 

 superciliary shield distinct: one large anterior and four small pos- 

 terior oculars : labial shields flat, short, slightly pitted on each side ; 

 loreal shield large, over labial : nostrils lateral, between three plates 

 and internasal and two nasals : eyes lateral ; pupil elliptical, erect : 

 body fusiform : scales flat, smooth : subcaudal plates one-rowed : 

 spur of the males stronger than of the females. 



Epicrates, Wagler, Syst. Amph. 168, 1830. Gray, Zool. Misc. 

 44, 1842. Dum. Sr Bib. Erp. Gen. vi. 552. Fitz. Cenchris sp., 

 Linn. S. N. ed. 7, 35. Gronov. Mus. Ichth. ii. 68. Gray, Ann. 

 Phil. 1825, X. 209. Griffith, A. K., not Wagler, Amph. 175, 1830. 

 Eunectes sp. and Euygrus sp., Wagler, Syst. Amph. 167, 166, 1830. 

 Boa sp., in<2., 1826. 



* Orbit with a complete circle of scales. 



1. The Pale-headed Epicrates. Epicrates angulifer, i?i6ro», 

 Sagra. H. N. Cuba, t. 25. Bum. ^ Bib. Erp. Gen. vi. 561. C. an- 

 gulata, Bibron in Mus. Zool. Boa sp., Gundlach, Wiegm. Arch. 

 N. i. 361. 



Head without dark streaks : the frontonasal plate with a trans- 

 verse row of four anterior frontal plates: orbit with a complete 

 circle of scales : scales of the middle of the back as small as those 

 of the sides. 

 a, b. In spirits. Adult. Hayti (R. Twining, Esq.) Presented by 



the Zoological Society. 



