228 BULLETIN 15 4, UNITED STATES NATIONAL MUSEUM 



liJlil. I'crficdrid lnip( riitlira srIuii'uUi Va.\ Dk.nmhucii and Slevin', I'roc. Calif. 

 Acad. Sci., ser. 4, vol. 11, p. 3'JT (.t.vpi' locality, "San Miircos Island, Gulf of 

 California, Mexico " ; type specimen, C.A.S. No. 50512, J. R. Slevin, collector). — 

 A'an Denburgh, Occas. Tap. Calif. Acad. Sci., vol. 10, 1922, p. 563. — Schmidt, 

 Bull. Amer. Mus. Nat. Hist., vol. 46, 1922, p. 680. — Stejnegek and BAiiBOUK, 

 Check List N. A. Ampb. and Kept., ed. 2, 1923, p. 69. — Sclatek, ZooI. Rcc. for 

 1922, vol. 59, " Reptilia," 1924, p. 23. 



1921. Verticaria espiritensis Van Denburgh and Slevin, Proc. Calif. Acad. 

 Sci., ser. 4, vol. 11, p. 397 (type locality, " Espiritu Santo Island, Gulf of 

 California, Mexico " ; type specimen, C.A.S. No. 50511, J. R. Slevin, col- 

 lector).— Van Denburgh, Occas. Pap. Calif. Acad. Sci., vol. 10, 1922, p. 566.— 

 Schmidt, Bull. Amor. Mus. Nat. Hist., vol. 46, 1922, 13. 681. — Stejneger and 

 P.ARBOTJR, Check List, N. A. Amph. and Rept., ed. 2, 1923, p. 68. — Sclater, 

 Zool. Rec. for 1922, vol. 59, 1924, " Reptilia," p. 23. 



1921. \'(rti((iria franciscensls Van Denburgh and Slevin, Proc. Calif. Acad. 

 Sci., ser. 4, vol. 11, p. 397 (type locality, " Sau Francisco Island, Gulf of 

 (California, Mexico " ; type specimen, C.A.S. No. 50513, J. R. Slevin, collec- 

 tor).— Van Denburgh, Occas. Pap. Calif. Acad. Sci., vol. 10, 1922, p. 568.— 

 Schmidt, Bull. Amer. Mus. Nat. Hist., vol. 46, 1922, p. 681. — Stejneger and 

 Barbour, Check List N. A. Amph. and Rept., ed. 2, 1923, p. 69. — Sclater, 

 Zool. Rec. for 1922, vol. 59, 1924, " Reptilia," p. 23. 



1929. Cnemidopliorus Itypcn/tlnus Injpcruthitis Bukt, Proc. Biol. Soc. Wash., 

 vol. 42, p. 154. 



/Systematic notes. — This form was described by Cope (18G3) as 

 a species of Cnemidophorus, but later (1869) he made it the type 

 of the new genus Verticaria. The sole distinction for Verticaria, 

 the possession of a single frontoparietal plate, has been found to 

 be incon.stant at times (see Burt, 1929), and conse(piently V. hypery- 

 thra and the other species of V erticaria are being returned to the 

 genus Gneinidophorus. 



After a study of the variation of O . hyperyfhrus hyperythrus, it 

 seems logical to relegate a number of the forms hitherto recognized 

 to its synonymy, A consideration of these will follow here in the 

 order that they were described. 



Verticaria heldingi was described by Stejneger in 1894. Two 

 distinctions were advanced by this author for its recognition. The 

 hrst was that the scales bordering the gular fold were smaller than 

 those on the chest between the forelegs in the types of V. heJdingi, 

 while in certain specimens of V. hyperythra, with which they were 

 compared, they were found to be the same size as those scales. TIk? 

 failure of this distinction was pointed out by Van Denburgh in 1895, 

 who wrote that " The character originally depended upon for the 

 separation of V. heldingi and V. hyperythra * * * was found 

 to be valueless, since many of the northern specimens have these 

 scales as large as do specimens from Cape San Lucas, and since much 

 individual variation exists in both. There appears to be not even 

 an average difference, in this respect, between the northern and 

 southern forms." With this view the writer fully concurs. 



