ON THE ZOOLOGICAL POSITION OF TEXAS. 15 



II. Tail cyliiidric, longer than liead and body. 



Hind foot tliree-fifths length of body; no spots on nnder surface of tail ; sides with 

 oblique black spots ; scales minute H. projnnqua. 



III. Tail cyliudric, shorter than head and body. 



Hind foot two-fifths length of body ; under surface of tail black spotted ; no black 

 spots on sides ; a few larger supraorbital scales H. lacerata. 



Hind foot two-fifths length of body; no black spots on tail ; two small ones on each 

 side; a few larger supraorbitals S. viaculata. 



Hind foot one-half length of body; no lateral or caudal spots; numerous larger supra- 

 orbital scsiles 3. elegans* 



Holhrooliia propinqiia is easily distingLiished from other species of the 

 geuus. The tail is slender, cyliudric, and longer than the head and 

 body ; the hind foot is elongate, being two-fifths the length of the head 

 and body. Ten or more supraorbital scuta; i)lates of muzzle iiat; labials 

 exceedingly narrow, five in number, followed by a fiat one. Femoral 

 pores 10-18. A pair of blue spots on the side; none under the tail. 



I did not observe the H. propinqua in any part of Texas visited by 

 myself. Mr. Marnock finds it abundant near Helotes, and Professor 

 Baird's types came from south of San Antonio. It is doubtless a south- 

 western species. 



HolhrooMa inaculata, Girard.t I did not observe this species in the 

 parts of Texas I examined, but a variety of it with a longer tail than 

 the usual form was obtained from Mr. Boll, who i)robably took it near 

 Dallas. Its characters are: Tail slender, cjiindric a little longer than 

 body; hind foot less than one-third head and body. Eight or ten 

 supraorbital scuta; scales of muzzle tubercular; labials very narrow, 

 five ; femoral pores 13. A pair of blue spots on the side ; none under 

 the tail. West of Dallas Messrs. Boll and Isaac obtained this species 

 from Weathford to Fort Concho, and Mr. Isaac sent it from the Wichita 

 country. Professor Baird records it as found between San Antonio and 

 El Paso. 



HolhrooMa lacerata Cope, sp. nov. Tail cyliudric, slender, a little 

 longer than body; hind foot short, less than one-third of head and 

 body; six or eight sujiraorbital scuta surrounded by minute tubercles; 

 scales of muzzle tubercular. Labials less elongate, 5 oblique, 1 flat ; 

 femoral pores 12-13 ; no blue spots on the sides ; transverse blue spots 

 on the inferior side of the tail. Color light brown, witli six pairs of 

 transverse dark bro\vn bars between the scapular region and groin, 

 which extend downwards and backwards on the abdomen. Their pos- 

 terior border is serrate or digitate, and edged with yellowish, producing a 



* Bocourt ; Mazatlan. 



tTho H. approximans, Bd., is from Northern Mexico, and scarcely diifers from ZT. 

 maculata even as a subspecies. 



