208 trS. NATIONAL MUSEUM BULLETIN 220 



Pityophis haenialois Cope 



Proc. Acad. Nat. Sci. Philadelphia, vol. 12, p. 342, 1860. 

 =Pituophis melanoleucus vertebralis (Blainville) 



CoTYPES (2): 4682 (2), Cape San Lucas, Baja California, Mexico, 

 J. Xantus. 



Pliocercus bicolor Smith 



Proc. Biol. Soc. Washington, vol. 54, p. 123, 1941. 

 HoLOTYPE : 25203, 9 , Tuxpan, Veracruz, Mexico, G. C. Lincecum. 



Pliocercus dimidiatus Cope 



Proc. Acad. Nat. Sci. Philadelphia, vol. 17, p. 190, 1865. 

 HoLOTYPE : 6363, Arriba, Costa Rica, C. N. Riotte. 



Pliocercus elapoides laticollaris Smith 



Proc. Biol. Soc. Washington, vol. 54, p. 122, 1941. 

 HoLOTYPE : 110767, 9, Tenosique, Tabasco, Mexico, H. M. Smith, 

 June 30, 1939. 



Pseudoboa robinsoni Stejneger 



Proc. U.S. Nat. Mus., vol. 24, p. 190, figs. 25-27, 1901. 

 =Pseudoboa neuwiedii (Dumeril and Bibron) 

 Holotype: 22532, La Guaira, Venezuela, W. Robinson, June 21, 1895. 



Python curtus brongersmai StuU 



Occ. Pap. Boston Soc. Nat. Hist., vol. 8, p. 297, 1938. 

 Paratype: 53427, Kuala Lumpor, Malaya, T. C. Pasqual. 



Rabdosoma crassicaudatum Dumeril and Bibron 



Erpetologie generale, ou histoire naturelle complete des reptiles, vol. 



7, pt. 1, p. 103, 1854. 

 =Atractus crassicaudatus (Dumeril and Bibron) 

 Cotype: 11138 (formerly 387), New Granada (Panama-Colombia), JPP. 



Regina clarkii Baird and Girard 



Smithsonian Misc. Coll., vol. 2, art. 5, p. 48, 1853. 

 ==Natrix sipedon clarkii (Baird and Girard) 



Holotype: 2264, Indianola (Calhoun County), Texas, J. D. Graham. 

 Paratypes (3) : 1392 (2) , ^4171. skins, same data. 



Regina grahamii Baird and Girard 



Smithsonian Misc. Coll., vol. 2, art. 5, p. 47, 1853. 



=Natrix grahamii (Baird and Girard) 



Holotype: 1376, Rio Salado, 4 miles from San Antonio, Bexar County, 

 Texas, J. D. Graham. 



