CROCODILIANS, LIZAKDS, AND SNAKES. 



367 



immediately above the arm. This sometimes has a few bhio scales 

 anterior to it, but there are none on the chiu. The aS'. s2nnostis grows 

 to twice the bulk of the S. nndulatus, which is its nearest ally in the 

 genus. 



Dr. Stejneger ' thiuks that the form above described is not the true 

 S. spinosus Wieginann, which, he says, has fewer femoral pores and is 

 an inhabitant of Mexico. I have not been able to detect any such dif- 

 ference in the specimens at my disposal. 



Sceloporu.s sjnnosus y^'iegninjui is abundant in southwestern and west- 

 ern Texas, as far north as the heads of the Medina and Guadalupe. I 

 did not see it on the Llano. There are specimens in Mr. Boll's Dallas 

 collections, but this gentleman informs me that it is very rare so far east. 

 It ranges in north Texas chiefly west of Fort Worth. This lizard is 

 especially arboreal, always ascending the trunks of trees when pur- 

 sued. In this situation its somber colors afford it concealment. These 

 are of different shades of brown without the brilliant blue and other 

 colors of the two species of the genus already named. The range of 

 this species extends as far east as Pensacola, Florida, whence Baird 

 obtained the type of his 8. floridanns. 



Sceloj)oru8 spinofiKs lVi€<imann. 



liOcality. 



San Antonio, Texas 



Point Isabelle, Texas 



El I'iiso. Texas 



Snii l)icf:<), Texas 



Mataniiira.s, Taraaulijias .. 



iirownsvillo, Texas 



Inrtianola to Neuces 



Indiaiiola 



Fort Bliss, New Mexico . . 



Buena Vista 



San Antonio, Texas 



Ilutersville, Texas 



Brownsville, Texas 



Brazos Kiver, Texas 



Charco Exondido 



Cadeveita 



China 



Between Laredo and Ca- 



niarno. 

 Matanioras, Tamanlipas.. 



do 



I'ecos liiver, Texas 



Matanioras, Mexi<!o 



Charo Iscendido 



San Antonio, Texas 



When col- 

 lected. 



Aiir. — , 1853 



I'roni whom received. 



May — , 1853 



Mar. 

 Apr. 

 Mar. 



San Antonio, Texas. 

 do 



San Diego, Texas . . . 



June — , 1.S79 

 do 



Dr. Woodliouse 



G. Wiirdemann 



J.H.Clark 



Lieutenant Couch. 



do 



Van Vliet 



Captain Pope 



Colonel Graham 



Dr. Crawford 



Lieutenant Couch. 



Whipple 



Professor Forshey 



Van Vliet '.. 



Dr. Shumard 



Lieutenant Couch. 



do 



do 



Major Emory 



Lieutenant Couch 



do 



Lieut. Charles Call 



Lieut. B. Couch, U. S. A. 



do 



Dr. S. W. Woodhouse. . . 



C. W. Schuermann. 



do 



W.J. Tavlor 



Nature of 

 specimen. 



In alcohol, 

 do. 

 do. 

 do. 

 do 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 



do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 



' North American Fauna, No. 7, 1893, p. 178. 



