NATURAL SCIENCES OP PHILADELPHIA. 169 



in contact ; frontals large, smooth. Canthus rostralis higher than frontal 

 ridge, sharp, elevated, bordered by four scales, the three anterior of which 

 are in close contact with those of the frontal ridges, which are three, and are 

 separated by two rows of large flat scales. Superciliaries five on each side, 

 all transverse except the anterior, but one on each side in contact. Occipital 

 large, oval, separated from superciliaries by one row, in a deep depression. 

 Supraocular patch of four or five transverse scales of an inner series, and 

 two or three round of an outer. Loreal rows five. Goitre small, covered 

 with close series of produced oppendiciform scales. Symphyseals produced 

 posteriorly. Two large anterior infralabials. Femoral scales larger ; brachials, 

 tibials and antebrachials equal to ventral, all weakly keeled. Dorsal little, 

 lateral much smaller, strongly keeled. Scales of caudal crest larger than 

 those of sides of tail. Muzzle to ear 3" 4 /// ; ear to vent 8" 2'"; vent to end 

 of tail 19". 



Above dark brown, blackish on sides of head ; below metallic green shaded 

 with brown ; under surfaces of tail and extremities pale brown. 



Hub. " Guadaloupe." Mus. Britt. 



Xiphosurus homolechis. 



Nc*nuchal crest, a slight fold. Four larger dorsal rows of keeled scales 

 fold none, or indistinct. Supra temporal and lateral scales minute. Super- 

 ciliaries separate ; frontals equal, keeled. Supraorbital patch separated by a 

 row of small scales from superciliaries. Canthus rostralis lower than frontal 

 ridge. 



Head short, muzzle acuminate ; canthus rostralis sharp, a little decurved, 

 its scales separated from those of the frontal ridge by one row of scales. 

 Scales of front and muzzle nearly equal, as broad as long, keeled. Six super- 

 ciliaries on each side, longer than broad. Occipital small, not in a depression, 

 separated from superciliaries by many rows of scales. Goitre large. Three 

 rows of subhexagonal scales in supraorbital disc, separated from supercilia- 

 ries by one row of small scales. Lateral scales granular. Scales of caudal 

 crest equal, lateral caudal ; those of extremities larger than ventrals. Muzzle 

 to ear 1" 4 /// ; ear to vent 3" 3"'. Anterior extremity 2" ; posterior 3" 6'". 



General color brown, darker on nape and temporal region ; below whitish, 

 with green metallic shades, and indistinct brown variations posteriorly. Tail 

 and extremities pale brown beneath. 



Hab. West Indies the island unknown. One specimen, Mus. Britt. 



Anolis Section.* Tail compressed, or with a median larger series of scales ; ventralt 



smooth. 

 Anolis d a mulus. 



Six superciliaries, nearly equilateral, except the anterior, which is very large, 

 separated by one row of smaller scales ; four rows between the anterior of 

 the facial ridges, weakly keeled. Supraorbital disk of about 14 keeled scales, 

 isolated. Occipital small, separated by many rows of small scales. Rostral 

 plate emarginate above ; nostril quite terminal, lateral. Five loreal rows. 

 Symphyseals broader than long ; three larger anterior infralabials two an- 

 terior broader than inferior labials. Dorsal scales very small, equal ; ventrals 

 larger than brachials, which are keeled ; infratibials smooth. Ear much 

 smaller than fissure of eye, larger than nostril. Anterior extremity reaching 

 beyond groin ; posterior to anterior border of orbit. Tail nearly cylindrical, 

 of moderate length ; all its scales strongly keeled. A shoulder fold. End of 

 muzzle to anterior border of orbit 6 /// ; between the latter points 5"'; muzzle 

 to ear 1" 3'"; ear to vent 3"; tail 7" 5". Anterior extremity 2"; posterior 

 3" 3'". 



Above metallic light reddish brown, with some minute glistening white 

 points on the sides. Head above paler, lips varied with darker, a pale streak 

 from below eye to ear. Limbs spotted, behind marbled with silvery, dark 



1864.] 



