1903.] 



NATURAL SCIENCES OF PHILADELPHIA. 



553 



Diadophis regalis C. 



Zamenis tceniatus tceniatus B.P. 



tceniatus ornatus 

 Salvadora grahami 

 Coluber emoryi C. 



bairdi 



subocularis 

 Arizona elegans 

 Rhinochilus lecontii 

 Ophibolus doliatus annulatus 



B. — Central : 



Terrapene ornata 

 Eumeces multivirgatus 

 Heterodon nasicus 

 Zamenis constrictor flaviven- 



tris B.P. 

 Pityophis catenifer sayi 



C. — Texan (restricted) : 

 Aspidonectes emoryi 

 Crotaphytus reticulatus 

 Holbrookia propinqua 

 Lysopticus lateralis 

 Sceloporus thayeri 

 Cnemidophorus grahami 



Ophibolus alternus 

 Contia episcopa isozona 

 Hypsiglena ochrorhyncha^^ 

 Tropidonotus sipedon transversus C. 

 Eutoenia marciana 



eques 

 Tantilla nigriceps C. 

 Crotalus molossus 



atrox atrox 



lepidus 



Ophibolus calligaster wE. 

 Tropidoclonium lineatum wE. 

 Eutcenia sirtalis parietalis B.P. 

 Sistrurus catenatus consors^* 

 Crotalus confluentus 



Eumeces pachyurus 



tetragrammus 

 brevilineatus 



Coluber obsoletus lindheimeri 



Contia episcopa episcopa 

 taylori 



Amphiardis inornatus 



II. — Chihuahnan and Central species, which extend east of longitude 

 96° (wA. or wE. indicates that the species barely enters the 

 western part of the region) : 



Chrysemys elegans wA. Ophibolus getulus sayi wA. wE. 



Sceloporus spinosus spinosus^^ Eutcenia proxirna wA. wE. 



Diadophis amabilis wA. Tantilla gracilis wA. 



Tropidonotus clarkii 



III. — Austroriparian species, which enter Tpxas but do not appear to 

 extend west of longitude 98° (E. are also Eastern) : 

 Alligator mississippiensis Tropidonotus sipedon fasciaius 



Aspidonectes ferox grahami 



'^ Received at the Zoological Gardens in 1903 from Seymour, Tex. 

 " =^Croialophorus edwardsi B. and G. 

 15 ^.Sceloporus floridanus B. and G. 



