152 BULLETIN 15 4, UNITED STATES NATIONAL MUSEUM 



1919. Cnemidophoriis estehanensls Dickerson, Bull. Amer. Mus. Nat. Hist. 



vol. 41, p. 474 (type locality, " San Esteban Island, Gulf of California, 



Mexco " ; type specimen, U.S.N.M. No. 64446, C. H. Townsend, collector).— 



Van Denburgh and Slevin, Proc. Calif. Acad. Sci., ser. 4, vol. 11, 1921, p. 



97.— Van Denbukgh, Ocoas. Tap. Calif. Acad. Sci., vol. 10, 1922, p. 536.— 



Nelson, Mom. National Acad. Sci., vol. 21, 1922, p. 171. — Schmidt, Bull. Amer. 



Mus. Nat. Hist., vol. 46, 1922, p. 675. — Stejneger and B^vrbouk, Check List 



N. A. Aniph. and Rept., ed. 2, 1923, p. 71. 

 1919. Cnemidophorus punctillnealis Dickerson, Bull. Amer. Mus. Nat. Hist., 



vol. 41, p. 475 (type locality, " Tiburon Island, Gulf of California, Mexico " ; 



type specimen, U.S.N.M. No. 64447, C. H. Townsend, collector). — Nelson, 



Mem. National Acad. Sci., vol. 21, 1922, p. 171. — Schmidt, Bull. Amer Mus. 



Nat. Hist., vol. 46, 1922, p. 676.— Stejneger and Barbour, Check List N. A. 



Amph. and Rept., ed. 2, 1923, p. 72. — Barbour and Loveridge, Bull. Mus. Comp. 



ZoQl., vol. 69, p. 243. 



1921. Cnemidophonix dickcrifonac Van Denburgh and Slevin, Proc. Calif. 

 Acad. Sci., ser. 4, vol. 11, p. 97 (type locality, " Isla Partida, near Angel de 

 la Guardia Island, Gulf of California, Mexico " ; type specimen, C.A.S. No. 

 49154, J. R. Slevin, collector).— Van Denburgh, Occas. Pap. Calif. Acad. 

 Sci., vol. 10, 1922, p. 533.— Schmidt, Bull. Amer. Mus. Nat. Hist., vol. 46, 

 1922, p. 678. — Stejneger and Barbour, Check List N. A. Amph. and Rept., 

 ed. 2, 1923, p. 70.— Sclater, Zool. Roc. for 1922, vol. 59, " Reptillia," 1924, 

 p. 23. 



1922. Cnemidophorus aethiops Van Denburgh, Occas. Pap. Calif. Acad. Sci., 

 vol. 10, p. 533. 



192S. Cnemidophorus tcssclatns tessclatus Woodbury, Copeia, no. 106, p. IS. 



/Systematic notes. — A great amount of variation, chiefly colora- 

 tional, exists in the specimens of this subspecies that have been 

 examined during the progress of this study. However, all 4300 

 examples have been found to possess certain diagnostic features 

 (given on p. 173) which combine them into the single taxonomic unit. 



The above synonymy is extensive and, in order that those who 

 maintain an interest in the sectional " species and subspecies " in- 

 cluded in the list may see the reasons for such action, the following 

 account is presented. 



C. tessellatus tesseUatus was first described by Say in 18'23 as 

 Ameiva tesselata -° and, although the type has been lost, there is no 

 doubt as to its identity with the present subspecies. From this time 

 until the period of the exploring expeditions, sent out by the United 

 States Government from about 1850, apparently no additional speci- 

 mens of this lizard were reported. In 1852 Baird and Girard 

 published short descriptions of four new Cnemidophori from the 

 collections of these expeditions, all of which are here regarded as 

 synonyms of tesseUatus. Three of these, Qiiarmoratus^ gracilis, and 



* It will be noticed that the .specific name, icxKcUita, av.-is spelled with one "1 " in the 

 original description. Since the derivation of the name is obviously from the adjective 

 " tessellated " which describes the dorsal pattern of the lizard, the use of one " 1 " con- 

 stitutes a misspelling. Therefore, the specific name is corrected to read " tcssellata (us) " 

 in the present work, following De Kay (1S42, p. 30). This is interpreted to be in 

 accordance with article 39 of the International Rules of Zoological Nomenclature. 



