THE HERPETOLOGY OF HISPANIOLA 125 



XIPHOCERCUS DARLINGTONI Cochran 



Plate 11, A 



1935. Xiphocercus darlingtoni Cochran, Proc. Boston Soc. Nat. Hist., vol. 40, 

 No. 6, p. 373.— Barbour, Bull. Mus. Comp. Zool., vol. 82, No. 2, p. 117, 1937. 



Original description. — "Diagnosis. — Differs from Xiphocercus valen- 

 ciennesii of Jamaica in having definite rows of small scales covering 

 gular skin, in having a relatively narrower and longer snout, in the 

 different size and arrangement of the scales covering the snout, in 

 having smaller granules on the sides of the neck and in having larger 

 scales on the anterior surfaces of the limbs. 



"Type. — M.C.Z. 38,251 an adult male from Roche Croix, Massif 

 de la Hotte, Haiti, at about 5000 feet altitude collected in October, 

 1934, by P. J. Darlington. 



"Description of the type. — Head large, twice as long as broad, nearly 

 twice as long as the tibia; top of snout with two low, indistinct ridges, 

 covered with large smooth shields; interorbital semicircles separated 

 by one series of small scales; occipital twice as long as broad, much 

 larger than the ear-opening, separated from the supraorbital semi- 

 circles by one row of scales; supraocular disk composed of three large, 

 very faintly keeled scales and two or three smaller smooth ones, the 

 latter separated from the superciliaries by about four rows of small 

 irregular scales; canthus rostralis very sharp, can thai scales four or 

 five; two or three loreal rows of flat, elongate scales; nostril just above 

 the canthus rostralis ; seven smooth upper labials to below the center 

 of the eye; ear-opening very small. Gular appendage large, extending 

 on the chest well behind the level of the axilla?, covered closely by 

 many rows of small, somewhat tubercular scales. Body compressed, 

 with a nuchal fold topped by scales a little larger than the surrounding 

 granules ; the body scales flat, enlarging on the sides, partly separated 

 by very minute grains; belly scales squarish, smooth, imbricate, 

 arranged in transverse rows. Limbs rather short, the adpressed hind 

 limb reaching the shoulder; 23 lamellae under second and third phal- 

 anges of fourth toe. Scales on anterior surfaces of limbs relatively 

 large, hexagonal, keeled faintly. Tail compressed, with a very slight 

 suggestion of a crest proximally, its length slightly exceeding that of 

 head and body. Male with irregularly enlarged postanal scales. The 

 type is unique. 



"Color in alcohol. — Ground color of dorsal parts drab-gray, lighten- 

 ing somewhat on the tail; a large square clove-brown patch over the 

 entire temporal region from the posterior orbit to the anterior border 

 of the ear; each of these square patches is bordered above by a cres- 

 centic lilac-gray mark; the occipital region between these pale cres- 

 cents sepia, lightening to wood-brown on the snout; supraocular 

 region olive-gray ; a chevron-shaped seal-brown mark leaving the dark 



