4. ZONOSAURUS. 127 
4, ZONOSAURUS*. 
Cicigna, part., Gray, Griff. A. K. ix. Syn. p. 63. 
Gerrhonotus, part., Dum. §& Bibr. v. p. 368. 
Cicigna (non Gray, 1825), Gray, Cat. Liz. p. 49. 
ewe ie (non Gray, 1845), Gray, Proc. Zool. Soc. 1865, 
p. 642. 
Nostril pierced between the rostral, the first labial, and two 
nasals ; prefrontal shields present; no frontoparietals. Lower eye- 
lid sealy. A strong lateral fold. Dorsal scales forming straight 
longitudinal and transverse series; ventrals hexagonal, in longi- 
tudinal series. Subdigital scales smooth or tubercular. Tongue 
nearly entirely covered with rhomboidal papille. 
Madagascar. 
Synopsis of the Species. 
Interparietal usually absent; four 
upper labials anterior to the sub- 
ocular; 16 to 22 femoral pores on 
each side ......... ei aeat sce Sabers 1. madagascariensis, p. 127. 
A small interparietal; four upper 
labials anterior to the subocular ; 
10 to 15 femoral pores .......... 2. ornatus, p. 128. 
Three upper labials anterior to the sub- 
ocular ; 10 to 13 femoral pores.... 3. rufipes, p. 128. 
1. Zonosaurus madagascariensis. 
Cicigna madagascariensis, Gray, Cat. p. 49. 
Cicigna madavascariensis, Gray, Griff. A. K. ix. Syn. p. 64, 
Gerrhosaurus bifasciatus, Dum. & Bibr. p. 375, pl. xlvii. 
madagascariensis, Boettg. Abh. Sench. Ges. xi. 1877, p. 35. 
—— (Cicigna) madagascariensis, Boetty. Abh. Senck. Ges. xi. 1879, 
p. 471, and xii. 1881, p. 449. . 
Frontonasal forming a suture with the rostral and with the frontal; 
four upper labials anterior to the subocular ; interparietal (usually) 
absent. Dorsal scales striated, with a strong median keel in the 
young, which becomes more feeble or disappears entirely in the 
adult; they form 22 or 24 longitudinal and 50 to 54 transverse 
series, counting from the parietal shields to the base of the tail ; 
ventrals in 8 longitudinal series. 16 to 22 femoral pores on each 
* The following species are referred to Zonosaurus merely on account. of 
their habitat, as unfortunately nothing in Grandidier’s diagnoses affords a clue 
to their position in the system : — . 
1. Gerrhosaurus quadrilineatus, Grandid. Rey. et Mag. Zool. xix. 1867, 
p. 233.—Tullear, Madagascar. 
9. G. laticaudus, id. eod. loc. xxi. 1869, p. 841.—Fiérin, Madagascar. 
3. G. karsteni, id. ibid.—Fiérin. 
4. G. eneus, id, Ann. Se. Nat. (5) xv. 1872, art. 20, p. 8.—Madagascar. 
