516 



KR. G. A. BOULBNGEE OK THE 



[May 18, 



1. 



Jalisco, N. of E. de Santiago. 

 Smith 



Zacateoas. Buller 



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Guanajuato. Duges 



Atlixco. Boucard 



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Hac. del Bobo, S. Mexico. Hoege 

 S. Mexico. Godnian 



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i> II 



Mexico. Boucard 



57 

 54 

 52 

 51 

 50 

 60 

 49 

 48 

 58 

 50 

 64 

 64 

 63 

 45 

 69 

 67 

 55 

 59 

 47 

 62 

 61 

 64 

 63 

 61 

 60 



11 

 11 

 11 

 11 

 10 

 10 

 10 

 10 

 11 

 10 

 12 

 12 

 12 

 10 

 13 

 13 

 10 

 11 

 9 

 13 

 12 

 12 

 13 

 12 

 12 



3. 



12 

 12 

 12 

 12 

 11 

 11 

 11 

 11 

 12 

 11 

 13 

 13 

 13 

 11 

 15 

 14 

 11 

 12 

 10 

 15 

 14 

 14 

 14 

 14 

 14 



4. 



11 

 11 

 11 

 11 

 10 

 10 

 10 

 10 

 11 

 10 

 12 

 12 

 12 

 10 

 14 

 14 

 11 

 12 

 9 

 13 

 12 

 13 

 13 

 13 

 12 



5. 



14 

 13 

 15 

 13 

 13 

 13 

 12 

 12 

 14 

 13 

 15 

 15 

 16 

 12 

 15 

 17 

 14 

 13 

 12 

 17 

 16 

 17 

 16 

 17 

 16 



37 

 38 

 36 

 38 

 33 

 34 

 36 

 34 

 40 

 38 

 45 

 48 

 43 

 45 

 44 

 41 

 45 

 45 

 44 

 43 

 43 

 43 

 41 

 44 

 43 



7 

 7 

 7 

 8 

 6 

 6 

 6 

 7 

 7 

 7 

 7 

 8 

 8 

 9 



10 

 9 

 9 

 9 



10 

 9 

 9 

 9 

 8 

 9 

 9 



8. 



36 

 35 



38 

 40 

 34 

 36 

 38 

 37 

 37 

 38 

 42 

 42 

 40 

 40 

 39 

 42 

 44 

 44 

 42 

 42 

 42 

 42 

 40 

 43 

 42 



16-16 

 15-15 

 17-16 

 14-13 

 16-15 

 14-15 

 15-16 

 17-17 

 14-13 

 13-15 

 15-15 

 17-16 

 17-17 

 17-17 

 17-16 

 18-18 

 17-17 

 19-18 

 17-17 

 17-17 

 18-17 

 19-20 

 16-17 

 19-18 

 16-17 



white beneath, uniform or with oblique blaclcish lines on the 

 throat. 



Hah. This, species, which may have to be united with the pre- 

 ceding, inhabits the greater part of Mexico ; it is said to penetrate 

 northwards a little way into South-western Texas and Arizona, 

 although the determination of the specimens on which the state- 

 ment is made requires revision, for some of them at least prove, 

 according to Stejneger, to belong to S. variabilis. 



26. SCELOPORUS VABIABILIS. 



Sceloporus variabilis, Wiegm. Herp. Mex. p. 51 (1834) ; Bo- 

 court, Miss. Sc. Mex., Eept. p. 200, pi. xviii. bis, fig. 1, & pi. xix. 

 fig. 2 (1874) ; Cope, Proc. Am. Philos. Soc. xxii. 1885, p. 394 ; 

 Bouleng. Cat. Liz. ii. p. 236 (1885) ; Giinth. Biol. C.-Am., Eept. 

 p. 75 (1890); Stejneger, Proc. U.S. Nat. Mus. xiv.1891, p. 485. 



Tropidolepis variabilis, Dum. & Bibr. Erp. Gen. iv. p. 308 

 (1837) ; Gray, Cat. Liz. p. 209 (1845). 



Scelopovus marmoratus, Hallow. Proc. Ac. Philad. 1852, p. 178, 

 and in Sitgreave's Exped. Zuni & Color. E. p. 110, pi. ii. (1853). 



Sceloporus delicatissimus. Hallow. 11. cc. pp. 178, 109, pi. i. 

 ' Lysoptychus lateralis. Cope, Proc, U.S. Nat. Mus. xi. 1888, 

 p. 397, pi. xxxvi. fig. 1. 



Head-shields keeled or striated, rarely nearly smooth ; frontal 

 transversely dilated, sometimes also longitudinally, separated from 



