222 IGTJANID^. 



denticulation formed by five pointed scales, which are not larger 

 than those preceding. Dorsal scales much larger than ventrals, 

 strongly keeled, denticulated and ending in a long spine posteriorly, 

 forming parallel longitudinal series. Thirty-two scales between 

 the occipital shield and the base of the tail ; six scales correspond 

 to the length of the shielded part of the head (eight or nine in the 

 young, owing to the proportionally larger head) ; lateral scales 

 keeled, directed obliquely upwards and backwards, gradually merging 

 into the ventrals and dorsals ; ventrals smooth, distinctly bicuspid ; 

 forty scales round the middle of the body. The adpressed hind 

 limb reaches nearly the ear ; tibia as long as the shielded part of 

 the head ; the distance between the base of the fifth toe and the 

 extremity of the fourth equals the distance between the end of the 

 snout and the middle of the oblique cervical fold. Twelve to 

 fourteen femoral pores. Caudal scales a little smaller than dorsals. 

 [Male with enlarged postanal scales.] Olive-brown above, with a 

 rather ill-defined black collar ; throat green, belly whitish (female). 

 " Male grass-green above, with a rather narrow black collar com- 

 plete above and below ; chin greenish, throat, breast, and side of 

 belly blue ; a narrow yellowish, black-edged median ventral line." 



millim. millim. 



Total length 105 Pore limb 32 



Head 17 Hind limb 48 



Width of head .... 15 Tail 97 



Body 51 



The adult male attains the size of S. torquatus. 

 Guatemala ; South Mexico. 



(i-b. 5 & yg. Jalapa. Mr. Hoege [C.]. 



4. Sceloporus formosus. 



Tropidolepis formosus, Grai/, Cat. p. 209. 

 Sceloporus formosus, Wiegm. Herp. Mex. p. 50, pi. vii. fig. 2 ; Bocourt, 



Miss. Sc. Mex., Kept. p. 182, pi. xviii. fig. 3. 

 Tropidolepis formosus, Dum. ^- Bibr. iv. p. 303. 

 Sceloporus malachiticus, Cope, Proc. Ac. Philad 1864, p. 178, and 

 Proc. Am. Phihs. Soc. xxii. 1885, p. 394. 



lunsei, Bocourt, I. c. p. 184, pi. viii. bis. fig. 5 ; Cojye, I. c. 



p. 395. 



suiaragdiuus, Bocourt, I. c. p. 186, pis. xviii. fig. G, and xis. 



fig. 1. 



viviparus, Cope, I. c. p. 398. 



tfeniocnemis, Cope, I. c. p. 399. 



torquatus formosus, Copie, I. c. p. 402. 



Head-shields smooth ; a series of four or five more or less trans- 

 versely enlarged supraoculars, bordered internally by a series of 

 usually moderate scales ; one or two cauthal scales ; occipital as 

 long as broad, much larger than the parietals, of which there are 

 frequently two on each side ; anterior border of ear with a strong 

 denticulation formed by four or five pointed scales, which are not 



