﻿448 4. ANGUID& 



91. Gerrhonotus multicarinatus (Blainville) 

 San Lucan Alligator Lizard 



Cordylus (Gerrhonotus) multi-carlnatus Blainville, Nouv. Ann. Mus. 

 Hist. Nat. Paris, Vol. IV, 1835, p. 289, p. 25, fig. 2. (type locality, 

 "California"). 



Gerrhonotus multicarinatus Dumeril & Bibron, Erpetologie Generale, 

 Vol. V, 1839, p. 404; Cope, Proc. Acad. Nat. Sci. Phila., 1866, p. 312; 

 Cope, Bull. U. S. Nat. Mus., No. 1, 1875, p. 46 (part); Bocourt, 

 Miss. Sci. Mex., Reptiles. 5e livr. 1878, p. 357, pi. XXIc, figs. 5-5a; 

 Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, p. 47 (part); Cope, 

 Bull. U. S. Nat. Mus., No. 32, p. 41 (part); Belding, West Amer. 

 Scientist, Vol. Ill, No. 24, 1887, p. 97; Stejneger, N. Amer. Fauna, 

 No. 7, 1893, p. 195; Van Denburgh, Proc. Cal. Acad. Sci., Ser. 2, 

 Vol. 5, 1895, p. 119; Van Denburgh, Proc. Acad. Nat. Sci. Phila., 

 1898, p. 63; Cope, Report U. S. Nat. Mus. for 1898, 1900, p. 520 

 (part); Stejneger & Barbour, Check List N. Amer. Amph. Rept., 

 1917, p. 61; Van Denburgh & Slevin, Proc. Cal. Acad. Sci., Ser. 4, 

 Vol. XI, 1 921, pp. 51, 62; Nelson, Mem. Nat. Acad. Sci., Vol. XVI, 

 1921, pp. 114, 115. 



Description. — Body long and rather slender, with short 

 limbs and very long tail. Head pointed, with flattened top 

 and nearly vertical sides, its temporal regions often swollen 

 in old individuals. Rostral plate rounded in upper outline. 

 Behind it, on top of the head, a pair of small internasals, a 

 pair of small frontonasals, a large azygous prefrontal, a 

 pair of large prefrontals, a long frontal, a pair of fronto- 

 parietals, two parietals separated by an interparietal, a pair 

 of occipitals, and a single interoccipital. Two series (of 

 five and three) supraoculars, and a series of small supercil- 

 iaries. Temporal scales all smooth. Upper labials much 

 higher than lower. Below latter two series of large subla- 

 bial plates, lower larger. Gular scales smooth and imbri- 

 cate. Scales on upper surfaces and sides of neck, body, and 

 tail large, rhomboidal, slightly oblique, strongly keeled, 

 strengthened with bony plates, and arranged in both trans- 

 verse and longitudinal series. Number of longitudinal dor- 



