CTENOSAURA.—HOLBROOKIA. 59 
Extralimital are the following species :—— 
1. Iguana acanthura, Blainville,=Cyclura acanthura, Dum. & Bibr.,= Cyclura hemi- 
lopha, Cope, Boulenger,=Ctenosaura acanthura, Bocourt (Miss. Sc. Mex., Rept. p. 138), 
= Ctenosaura interrupta, Bocourt (Le Naturaliste, 1882, p. 47).—Lower California. 
2. Ctenosaura erythromelas, Boul. Proc. Zool. Soc. 1886, p. 241, t. 23; Cachryx 
erythromelas, Cope, Proc. U.S. Nat. Mus. 1886, p. 437.—Probably Lower California. 
CROTAPHYTUS. 
Crotaphytus, Holbrook, N. Amer. Herpet. ii. p. 79. 
1. Crotaphytus wislizenii. 
Crotaphytus wislizenii, Baird & Girard, Proc. Ac. N. Sc. Phil. vi. p. 69; and in Stansbury’s Exped. 
Great Salt Lake, p. 340, t.3; and U.S. & Mex. Bound. Survey, Rept. p. 7, t. 31; Bocourt, 
Miss. Sc. Mex., Rept. p. 155, t. 17 bis. figg. 4, 4a; Boul. Cat. Liz. ii. p. 204. 
Crotaphytus gambelii, Baird & Girard, Proc. Ac. N. Sc. Phil. vi. p. 126. 
Crotaphytus fasciatus, Hallow. Proc. Ac. N. Sc. Phil. vi. p. 207; and in Sitgreave’s Expedit. Zuni 
and Colorado R. p. 115, t. 5. 
Hab. Nortu America, Oregon, California, New Mexico, Arizona and Texas.—MeExico, 
Sonora. 
2. Crotaphytus collaris, 
Agama collaris, Say in Long’s Exped. Rocky Mount. ii. p. 252; Harlan, Med. Phys. Res. p. 142, 
t. 1. fig. 4. 
Crotaphytus collaris, Holbr. N. Amer. Herpet. ii. p. 79, t. 10; Cope, Proc. Ac. N. Se. Phil. xviii. 
p. 802; Bocourt, Miss. Sc. Mex., Rept. p. 154, t. 17 bis. figg. 5,5a,6,6a; Yarrow, Check- 
list N. Amer. Rept. p. 52; Boul. Cat. Liz. ii. p. 208. 
Hab. Nortu America, Southern and South-western States.—Mexico, Chihuahua, Nuevo 
Leon, Western Sonora, Sta. Catarina (U.S. Nat. Mus.). 
HOLBROOKIA. 
Holbrookia, Girard, Proc. Am. Assoc. Adv. Sci. iv. p. 201 (1851). 
Cophosaurus, Troschel in Wiegm. Arch. f. Naturg. 1850, p. 389 (publ. 1852). 
1, Holbrookia texana. 
Cophosaurus texanus, Troschel, Wiegm. Arch. f. Naturg. 1850 (publ. 1852), p. 389, t. 6. 
Holbrookia texana, Baird & Gir. Proc. Ac. N. Se. Phil. vi. p. 125 ; and in U.S. & Mex. Bound. Surv., 
Rept. p. 8, t. 30; Cope, Proc. Am. Phil. Soc. xxii. 1885, p. 169; Yarrow, Check-list N. 
Amer. Rept. p. 50; Boul. Cat. Liz. ii. p. 208. | 
Holbrookia affinis, Baird & Gir. Proc. Ac. N. Sc. Phil. vi. p. 125; and in U.S. & Mex. Bound. Surv., 
Rept. p. 8. 
Hab. Norra America, Texas to California.—Mexico, N. Sonora (Clark), Alamos, Casta- 
neulas (Couch, U.S. Nat. Mus.), Monterey, Nuevo Leon (Couch, Cope). 
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