598 10. BIPEDIDJE 



Euchirotes biporus Cope, Amer. Nat., 1894, p. 437, figs. 5-je (type locality, 

 Cape San Lucas, Lower California); Van Denburgh, Proc. 

 Cal. Acad. Sci., (2), V, 1895, p. 135; Cope, Report U.S. Nat. Mus., 

 1898 (1900), p. 680, fig. 140; Van Denburgh & Slevin, Proc. 

 Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, p. 52; Terron, Mem. y 

 Rev. Soc. Cient. Antonio Alzate, Vol. 39, 1921, p. 164. 



Bipes biporus Stejneger & Barbour, Check List N. Amer. Amph. 

 Rept., 1917, p. 72; Nelson, Mem. Nat. Acad. Sci., Vol. XVI, 

 1921, pp. 114, IIS- 



Description. — Stout, nearly uniform in diameter, with 

 blunt head and tail. Body and tail covered with small 

 squarish scale-like divisions of the skin arranged in whorls 

 and giving a worm-like aspect. Two well-developed mole- 

 like limbs a short distance behind head. Eyes atrophic. 

 Mouth small. Snout short, rounded and very convex. 

 Limbs very broad and short, with five perfect clawed digits. 

 Larger head plates are a rostral, three labials, a nasal, an 

 ocular, a preocular, two suboculars, a very large prefrontal, 

 and a pair of frontals. There are also two small plates 

 between the third labial and the suboculars. Anus preceded 

 by several rows of granules, in front of which is a trans- 

 verse series of six large plates. A single preanal pore in a 

 large plate in front of the external preanal plate of each side. 



Color, in alcohol, uniform white. Probably pink in life. 



Length to anus 



Length of tail . 



Length of head 



Fore I imb.,- 



Distribution. — This curious degenerate lizard is known 

 only from the Cape Region of Lower California, where it 

 has been taken at La Paz and Cape San Lucas. 



Habits. — Nothing is known of the habits of this species, 

 beyond the fact that it is a burrowing form. 



