120 ON THE BATRACHIA AND REPTILIA OF COSTA RICA. 



the shoulder, where it is marked by pale centred ocelli. It is separated above by 

 a narrow paler band from a large dark brown patch that covers the nape and scap- 

 ular regions. Limbs and tail broadly and indistinctly brown cross-banded. Belly 

 and throat immaculate. 



San Jose, Costa Rica ; Dr. Van Patten. 



This large species is allied to the next, but perhaps resembles more the Anolis 

 biporcatus, Wiegm., the largest Anolis of Mexico. The latter has, among other 

 points of difference, keeled abdominal scales and a shorter muzzle, with very differ- 

 ent coloration. The unform size of all the scales is a noteworthy character of the 

 A. microtus. 



50. Anolis insignis, Cope, Proceed. Academy Philadelphia, 1811, p. 213. 



Auricular opening half as large as eye. Scales intermediate ; seven rows 

 between orbits ; one or two supraorbital rows but little larger than the others ; 

 eight rows across middle of muzzle, and six across loreal region at middle. Three 

 large and two small keeled infralabial rows. Scales of arm smooth, of tail striate. 



Fawn-brown, with four double bands of greenish-blue between axilla and tail. 

 Between these the brown is divided by a yellow band which widens below and 

 breaks into spots above. A large round greenish-blue spot with brown centre in 

 front of axilla. 



Interorbital and occipital regions deeply concave, the latter bounded posteriorly 

 by two elevated osseous ridges which meet behind at an acute angle. No facial 

 rugae, front flat except a slight median elevation. Muzzle with broad median 

 ridge. Scales of front equal, those of canthus osseous. Postfrontal and zygomatic 

 arches prominent, rugose. Inferior loreal row of scales larger than others, nares 

 surrounded by small scales. Fan very largely developed. An elevated crest or 

 dermal fold on the nape. Scales of the sides and back (except some median rows) 

 flat, pavement-like, equal, smooth, one-third the size of the smooth ventrals. Four 

 median dorsal rows subconic, smaller than the ventrals. Tail proximally com- 

 pressed, covered with equal scales. Limbs stout, the anterior extending four-fifths 

 way to groin ; the hinder reaching nearly to the ear. Scales of the limbs small ; 

 dilatations distinct. 



The colors of this Anolis are very elegant. Besides the large spot behind the 

 angle of the mandible, there is a blue one on the angle surrounded by fawn-color, 

 and this by yellow. Sides of the temporal region and neck with yellow spots. 

 Bluish of first cross-band in a coarse netted figure. Top of head fawn-color ; face 

 entirely vermilion ; belly light yellow. Tail with broad blackish annuli ; limbs 

 with dark cross-bars, three on tibia, femur, and forearm ; two on humerus. 



