482 PROCEEDINGS OF THE NATIONAL MUSEUM V0L " 93 



THAMNOPHIS MELANOGASTER MELANOGASTER (Peters) 



Thamnophis melanogaster melanogaster Smith, Zoologica, vol. 27, pp. 11&-117, 

 1942. 



Six specimens were secured, at Chimalhuacan, Mexico (Nos. 

 110793-8), where the species is common in irrigation ditches. 



The Museum has two other specimens (Nos. 12726, 12729), from 

 Mexico, D. F. 



THAMNOPHIS MELANOGASTER CANESCENS Smith 



Thamnophis melanogaster canescens Smith, Zoologica, vol. 27, pp. 117-120, 1942. 



Two specimens were secured, one (No. 110799) at La Palma, 

 Michoacan, the other at Tacicuaro, Michoacan (No. 110800). Both 

 are paratypes. 



The Museum has 14 other specimens referred to this race: Nos. 

 11365 (2), 14604, 26149-50, probably from Guanajuato (Duges, coll.) ; 

 Nos. 23985-9, from Durango, Durango; and Nos. 46411-4, Hacienda 

 La Parada, San Luis Potosi. 



♦THAMNOPHIS ORDINOIDES ERRANS Smith 



A single specimen, the type, in the Museum is from Colonia Garcia, 

 Chihuahua (No. 46336 ). 91 * 



♦THAMNOPHIS PHENAX PHENAX (Cope) 



Five specimens 92 are in the Museum, from "Alpine region, Orizaba, 

 Veracruz" (No. 7079 [3]), and Cordoba, Veracruz (Nos. 30498-9, 

 latter type 83 ). It seems probable that the locality data for one or 

 the other of these series are incorrect. 



THAMNOPHIS PHENAX HALOPHILUS Taylor 



Thamnophis phenax halophilus Smith, Zoologica, vol. 27, p. 100, 1942. 



A single specimen (No. 110801) was collected at Tequeyutepec, 

 Veracruz. 



The Museum has no others of this subspecies. 



A specimen in the Museum of Comparative Zoology (No. 27114) 

 recently examined closely agrees with the above specimen. It bears 

 the locality data ''Alpine region, Orizaba" and was collected by 

 Francois Sumichrast. It is a male withe 19-19-17 scale rows, 154 

 ventrals, 71 (+ ?) subcaudals, 8-8 supralabials, 11-11 infralabials, 1-1 

 preoculars, 3-3 postoculars, and 1-2-3 temporals; it measures 579 

 mm. in total length, and 131 mm. in tail length. The light parietal 



B1 Smith, 1942f, pp. 112-114. 



03 Cope, 18G8a, p. 134 ; Ruthven, 1908, p. 131. 



63 Smith, 1942f, pp. 99-100. 



