CROCODiLlANS, LIZARDS, AND SNAKES. 497 



tow of scales separates the labials from the eye, and sometimes there 

 are t\v:o rows. In the type of the var. sulcatm one labial enters the eye 

 border, and in Cat. No. Iil359 two labials enter it. 

 The color varieties may be i)resented in the following form: 



I. Lateral scales of the body with sjiots. 



A. Dorsal scales spotted like laterals ; Cat. Nos. 9350, 9358, aud 208n. 



B. Lateral spots larger; dorsal spots forming a series on each row of scales; 



Cat. Nos. 4168, 5135, 5138, 5130, 5137, 9260, 9687, 12751, 12783, 13685, 14142, 16949; 

 Mobile, Alabama, E. D. Cope ; Cat. Nos. 4985, 9359. 



C. Spots OQ three lateral rows; a median dorsal stripe, connected with lateral 



spots by cross-bauds; Cat. No. 5322. 



D. Three rows of lateral spots; no dorsal stripe, but large, brown, pale edged 



lateral dorsal spots; Cat. No. 14724. The spots are connected so as to form 

 complete dorsal cross-bands in a specimen from Gotha, Orange County, 

 Florida. 



E. No dorsal stripes or spots; Cat. Nos. 6419, 13809. 



II. Lateral spots conlLieut into stripes. 



F. Three lateral stripes, one dorsal stripe, and lateral dorsal spots. Nos. 1535, 



1536, 1537, 18024. 



G. Four lateral aud oue dorsal stripe; Cat. Nos. 3201, 5038. 



H. Three lateral stripes aud no dorsal ; Cat. No. 11400. Two trom Orange County, 



Florida, in the Milwaukee musenm. 

 I. Three lateral and one dorsal stripe ; Cat. Nos. 3193, 5129, 5131, 5089, 6078, 897S, 



9357, 12048, 13383, 14076, 14515, 6073, 9.360; Volusia, Florida, E. D. Cope; 



Wichita River, Texas, E. D. Cope; Dallas, Texas, E. D. Cope. 

 J. One lateral stripe and oue dorsal; Cat. No. 10584. 

 K. One lateral stripe and no dorsal ; Cat. No. 21359. 



Besides the stripes mentioned nuder II, there is sometimes a feeble 

 one on the superior row of abdominal scales. Many specimens also 

 have vertical pale bars with a dark posterior border on the side of the 

 body from the ear for a varying but not long distance posteriorly. Such 

 are Cat. Nos. 8978, 3201 , 5129, 9357, 0073, 5089, 6419, 51 35, 5138, 5130, 92C0, 

 12754, 12783, 13G85. 



It now remains to be ascertained what indications these variations 

 in squamation and coloration present of specilic or subspecific value. 

 In the first place, it is to be observed that the greater number of indi- 

 viduals are grouped into two color types, which are marked in the above 

 list by the letters B and I, or the checkered and the striped patterns, 

 respectively. Do any other characters accord with these conspicuous 

 color varieties? I quoted on a former occasion the manuscript remark 

 of Professor Baird that the western variety of this species has but 14 

 rows of scales, as distinguished f.om the eastern type with 10 rows, 

 and that he called the former by the subspecific name of attcnuaius^ 

 I might have added that Professor Baird in his manuscript regarded 

 the striped form as predominatingly western and the checkered type 

 as eastern. Dr. Boulenger - has adopted this form as a distinct !~pe- 



' Bulletin U. S. National Museum, No. 17, 1880, p. 18. 

 *Cat. Liz. Brit. Mus., 2d ed., II, p. 282. 

 NAT MUS 98 32 



