Cope.] 400 [April 17, 



ScELOPOKUs LUN^i, Bocourt, Com. Sci. du Mex., iii Kept.; p. 184, pi. 

 xviii, bis fig. 5, 5a, 5b. 

 Guatemala, Bocourt, 



SCELOPORUS FERRARIPEREZI, Sp. nOV. 



The species belongs to the S. torquatus group, but is quite difierent. It 

 is of about the size of the S. dugesi, and resembles it in coloration, but has 

 entirely different characters of the squamation of the head and body. 



Dorsal scales large in parallel rows, G.5 in a head length, 25 in a line 

 from head to line connecting groins, with well developed keels and mu- 

 crones. Lateral scales a little smaller in oblique series, which run upwards 

 and backwards. Ventral scales a good deal smaller. Femoral pores 

 eighteen. Auricular scales not larger than those in front of them. Scales 

 of head smooth, one only in canthal row (in one of five specimens, there 

 are two). Anterior frontal not divided, one row of wide transverse supra- 

 oculars, separated from the supraorbitals by one row of scales, and by two 

 smaller rows from the superciliaries. Interparietal plate subquadrate ; 

 parietals two on each side. The posterior foot is short, and reaches a little 

 anterior to the meatus auditorius when the posterior leg is extended for- 

 wards. 



Color above dark olive, below light yellow. A black scapular spot 

 which sends a narrow black line upwards and backwards, which sometimes 

 meets its fellow of the opposite side, but generally fails to do so by one or 

 two scales. Sides of belly bluish slate color ; throat dark slate color, with 

 scattered yellow scales. No black collar across throat. A female has 

 scarcely any markings, there being a few brown lines on the scales above 

 and below. 



From Dr. Alfred's Duges ; Nos. 9874-70-78-80 and -95. Named in 

 in honor of Dr. Fernando Ferrari-Perez, the energetic chief of the Com- 

 mision Cientifica of Mexico. ? From Guanajuato. 



SCELOPORUS MELANOGASTER, Sp. UOV, 



Dorsal scales in parallel series, large, six of them equaling a head- 

 length, all keeled and strongly mucrouate. Lateral scales smaller than 

 dorsals, graduating into the still smaller abdominals. Lateral abdominals 

 mucronate and notched, not keeled. One canthal scale which reaches the 

 large subnareal. A small flat scale on the upper side of the canthus repre- 

 sents the anterior canthal. Supraoculars in one row of five large plates, 

 which are separated by a rather large row from the supraorbitals all round, 

 and by two rows of smaller scales from the superciliaries. Auricular 

 scales large. Eighteen femoral pores. Scales of front entirely smooth ; 

 anterior frontal not divided ; two parietals. Posterior foot short, scarcely 

 equaling the length of the head, including the auricular meatus. 



Color above sea green, with a wide olivaceous band down the median 

 dorsal region. A black nuchal collar of only two scales in width, which 

 has a broad yellow border. The anterior border is divided by three longi- 

 tudinal striaj of the ground color on adjacent rows of scales. Top of head 

 dark olive. Lips, thorax, middle of abdomen, extending on each side over 



