_Diagnosis._--Size large for the species; tail no shorter than head and body (100-114.8%); dorsum dark (near Prout's Brown or Mummy Brown middorsally, Clay Color on sides); supraorbital border rounded; anterior palatine foramina long. _Comparisons._--_P. b. beatae_ differs from other subspecies of _P. boylii_ by the combination of large size, long tail, and dark color. _Remarks._--Thomas (1903:485) described _P. beatae_ on the basis of five specimens from Xometla Camp (lat. 18° 59' N, long. 97° 10' W) and one juvenile from Santa Barbara Camp, both on the Volcán de Orizaba, Veracruz. Thomas thought that _beatae_ was related to _aztecus_, but the differences relied on by him to distinguish the two are the same as those that distinguish _aztecus_ from _boylii_. Osgood (1909:153) placed _beatae_ in synonymy under _P. b. levipes_ because Mount Orizaba (type locality of _beatae_) is "relatively very near" Mount Malinche (type locality of _levipes_), and Thomas had not compared _beatae_ with _levipes_. Xometla, on the east side of the Volcán de Orizaba, is approximately 56 miles east of the Tlaxcalan part of Mount Malinche and is situated where the Tropical Life-zone begins, whereas Mount Malinche is in the Austral Life-zone on the Mexican Plateau; the difference in habitat between the two places is great. Topotypes of _levipes_ differ from two topotypes of _beatae_ in the same fashion as do other specimens of _levipes_ (from San Luis Potosí) from other specimens of _beatae_ (from Veracruz). Unfortunately, the topotypes of _beatae_ lack external measurements and are subadults, but their coloration agrees with that of other specimens that are here referred to _beatae_. Hall and Kelson (1959:634, map 364) incorrectly mapped the distribution of _levipes_ in Veracruz. There are at least two places named Xuchil in the state of Veracruz and Hall and Kelson (_loc. cit._) unfortunately plotted the one at lat. 20° 42' N, long. 97° 42' W whereas the specimens actually were collected at the Xuchil on the pleateau south of the Volcán de Orizaba (18° 53' N, 97° 14' W) in the west-central part of Veracruz. The specimens from Xuchil are _P. b. beatae_. Intergradation in color between the two subspecies _levipes_ and _beatae_ is seen in specimens from Jalapa and Zacualpan (3 km. N, also others from 3 km. W), Veracruz. Intergradation between these two subspecies possibly will be found elsewhere along the Sierra Madre Oriental.