152 BULLETIN 19 9, UNITED STATES NATIONAL MUSEUM 



KEY TO MEXICAN SPECIES OF LEPIDOPHYMA 



1. All (except basal) whorls of enlarged scales on tail separated from each other 



dorsally by 4 rows of scales; femoral pores 15 to 22; median prefrontal nor- 

 mally present, sometimes absent flavimaculata flavimaculata (p. 152) 



All whorls of enlarged scales on tail separated from each other dorsally by 3 

 rows of scales (rarely feeble evidence of a fourth row); femoral pores less 

 than 14; median prefrontal present or absent 2 



2. A median prefrontal smithii smithii (p. 152) 



No median prefrontal 3 



3. Scales in posterior temporal region (anterior to ear) minute and very uniform 



in size, except for a series of relatively large, projecting auricular lobules and 

 a row of larger scales beside the upper temporals; whorls on tail relatively 



little differentiated smithii occulor (p. 153) 



Scales in posterior temporal region (anterior to ear) larger, irregular in size; 

 auricular lobules poorly defined or absent; no scales bordering upper tem- 

 porals; tail whorls strongly differentiated smithii tehuanae (p. 152) 



LEPIDOPHYMA FLAVIMACULATA FLAVIMACULATA A. Dumeril 



Lepidophyma flavimaculatus A. DumiSril, in Dumeril and Dumeril, Catalogue 

 m6thodique de la collection des reptiles (Paris Museum), 1851, pp. 138-139. 



Lepidophyma flavomaculaturn flavomaculatum, Smith, Proc. U. S. Nat. AIus., vol. 

 92, 1942, p. 379. 



Type. — Mus. Hist. Nat. Paris; P. M. A. Morelet collector. 



Type locality. — Province de Pet6n, Guatemala, here restricted to 

 Rio de la Pasion. 



Range. — Atlantic slopes from southern Veracruz to British Hondu- 

 ras, excluding the Yucatan Peninsula. Recorded in Mexico from 

 Veracruz: Rio de las Playas; Tabasco: Rio de las Playas; Chiapas: 

 across the Usumacinta River from Piedras Negras, Peten, Guatemala. 



LEPIDOPHYMA SMITHII SMITHII Bocourt 



Lepidophyma Smithii Bocourt, Journ. Zool., Paris, vol. 5, No. 5, 1876, pp. 



402-403; Mission scientifique au Mexique . . ., Etudes sur les reptiles, livr. 



5, 1878, pp. 309-312, pi. 20F, figs. 3-3b, and pi. 20G, figs. 2-2b. 

 Lepidophyma smithii smithii, Smith, Proc. U. S. Nat. Mus., vol. 92, 1942, p. 380. 

 Akleistops guatemalensis Muller, Verh. Naturf. Ges. Basel, vol. 6, 1878, pp. 



390-398, pis. 1, 2 (Nat. Mus. Basel; Mazatenango, Guatemala). 



Type. — Mus. Hist. Nat. Paris, six co types; "Commission Scien- 

 tifique" collector.^* 



Type locality. — "Tehuantepec, and west coast of Guatemala," re- 

 stricted to "Guatemala," here restricted to Mazatenango. 



Range. — Pacific slopes of Chiapas and western Guatemala. Re- 

 corded in Mexico only from Chiapas: La Esperanza near Escuintla. 



LEPIDOPHYMA SMITHU TEHUANAE Smith 



Lepidophyma smithii tehuanae Smith, Proc. U. S. Nat. Mus., vol. 92, 1942, pp» 

 377-378. 



" On the basis of the figures given of the types, Smith believes they represent a population characteristic 

 of Chiapas and Guatemala, and not of the region of Tehuantepec city. 



