110 BOIDz. 
bordered by one labial (fifth or sixth) and 11 to 13 scales; 23 to 
26 shields round the upper Jip; four pairs of shields bordering the 
mental groove. Scales strongly keeled, in 29 to 31 rows. Ven- 
trals 149-152; anal entire; subcaudals 25-30. Brown above, 
darker on the top of the head and the middle of the nape; two 
alternating series of large black spots on each side, the lower 
largest and extending on the belly, which is yellowish. 
Total length 395 millim.; tail 39. 
Guayaquil; Brazil. 
12. UNGALIA. 
Unc art., Sehleg. Phys. Serp. ii. p. 873 (1837). 
ngalia, Gray, Zool, Mise. p. 46 1842), and Cat. Sn. p. 104 (1849). 
Trp Bibr. in R. de la Sagra, Hist. Cuba, Rept. p. 207 
(1843); Dum. & Bibr. Erp. Gén. vi. p. 488 (1844); Jan, Icon. 
Gén. Ophid. p. 74 (1865). 
Leionotus, Bibr. 1. ce, p. 211. 
Notophis, Hallow. Proc, Ac. Philad. 1856, p. 156. 
Anterior maxillary and mandibular teeth longest, gradually 
decreasing in size. Head distinct. from neck, covered with shields, 
viz. a pair of internasals, one or two pairs of prefrontals, a pair of 
supraoculars, a frontal, and a pair of parietals; nostril between two 
nasals; no loreal. Eye moderate, with vertical pupil. Body 
cylindrical or compressed; scales moderate, smooth or keeled. 
Tail short, pointed, prehensile; subcaudals single. 
West Indies (Bahamas, Cuba, Santo Domingo, Jamaica), Guate- 
mala, Ecuador, Peru. 
Synopsis of the Species. 
I. Vertebral scales not enlarged. 
Scales in 23 rows, keeled; ventrals 149- ' 
160 «520. a2s' sien '6 aie te apn eis Wen tio od 1. taczanowskyi, p. 111. 
Scales in 25 rows, tectiform; ventrals 208. 2. moreletit, p. 111. 
Scales in 27 or 29 rows, keeled; ventrals 
WS —Z2A . s tins syarare 2 aon aioe ae Avs talonse 3. melanura, p. 111. 
Scales in 25 to 29 rows, smooth or dorsals 
feebly keeled; ventrals 171-211...... 4. maculata, p. 112. 
Scales in 23 or 25 rows, smooth; ventrals 
ESS-1OB ... ..5.0s.c yu eee eee thee 5. pardalis, p. 113. 
Scales in 21 or 23 rows, smooth; ventrals 
DOMABOO vc ssn CS ak eaadns epee 6. semicincta, p. 113. 
Il. Scales of vertebral row enlarged..~ 
Scales in 25 rows, smooth ; ventrals 188.. 7. conjuneta, p. 113. 
Scales in 23 rows, keeled ; " ventrals 168 . of oe aah p- 114. 
