SYSTEMATIC LIST AND SYNONYMY. 171 



SOLENOGLYPH A— Continued. 



Mitch. Res., 120, — 1866, Pr. Phil. Ac, 308. Crotalus horridus Latr., 

 1801, Kept., Ill 186; Daud., 1803, Eept, V, 311; Max., 1824, Beitr. 

 Bras., I, 435, — 1827, Abbild. Bras., lief. 11, pi. 4; Fitz., 1826, Neue 

 Class., 63; Wagl., 1830, Amph., 176; Sehleg., 1837, Essai, II, 561, pi. 

 20, f. 12-14; Gray, 1849, Cat, 20 (mixed); D. & B., 1854, Erp., VII, 

 1472, pi. 84 bis, f. 2; Mart, 1856, Mus. Bex]., 34; Jan, 1S50, Rev. & 

 Mag. Zool., Extr., p. 28, — . 1863, Sist., 124, — 1874, Icon., livr. 46, pi. 

 3, f. 1-2. Caudisona terrifica Laur., 1768, Syn. Rept., 93; Cope, 1861, 

 Mitch. Res., 120, — 1866, Pr. Phil. Ac, 308. Crotalus ierrificus Yar- 

 row, 1875, Wheeler's Rep., V, 532. Crotalus cascavella Wagl., 1824, 

 Spix. Bras. Serp., 60, pi. 24, — 1830, Syst., 176. Crotalus simus Latr., 

 1801, Rept, III, 202; Daud., 1803, Rept., V, 321. Crotalus loeflingii 

 Iiumb., 1S33, Recueil d'Obs. Zool., p. 6; Cope, 1861, Mitch. Res., 120. 

 Le Boiquira, p. 390, and Le durissus, p. 423, LaC, 1739, Serp., II, text 

 only. 



Brazil to Mexico. 



Var. MOLOSSTJS 113 



'Crotalus mohssus B. & G., 1853, Serp., 10 ; D. & B., 1S54, Erp., VII, 1482; 

 Bd., 1859, Mex. Bound., II, Rept, 14, pi. 3, — 1859, P. R. R. Rep., X, 

 Rept, pi. 24, f. 5; Cope, 1859, Pr. Phil. Ac, 338, — 1875, Checklist, 

 33 ; Yarrow, 1875, Wheeler's Rep., pp. 531, 533 ; Coues, 1875, Wheel- 

 er's Rep., V, 605. Caudisona molossus Cope, 1861, Mitch. Res., 124, — 

 1866, Pr. Phil. Ac, SOS. Crotalus orncdus Hall., 1854, Pr. Phil. Ac, 

 192, — 1859, P. R. R. Rep. (Parke's), X, pi. 2, pi. 24, f. 5, — Cope, 

 1859, Pr. Phil. Ac, 338. 



Northern Mexico; Arizona; New Mexico. 



Var. basiliscus 



Caudisona basilisca Cope, 1864, Pr. Phil. Ac, 166, — 1866, Pr. Phil. Ac, 

 308. Crotalus basiliscus Yarrow, 1875, Wheeler's Rep., V, 532. 



Muzzle plates two pairs, a third pair subdivided. Rostral higher 

 than wide, in contact with nasals and internasals. Labials 14, sep- 

 arated from suborbitals by two and three rows. Scales in 29 rows, 

 outer largest, outer three smooth. Ventrals 199. Subeaudals 24. 

 Pale yellowish-brown, head and tail darker. Markings on entire 

 scales. Dorsal rhombs about thirty ; five obscure rings on the tail, 

 Two elongated occipital spots. No lines on the neck. Labials yel- 

 lowish. 



Western Mexico. 



Crotalus adamanteus (Diamond Rattlesnake) 112 



Crotalus adamanteus Beauv., 1799, Trans. Am. Phil. Soc, IV, 368; 

 Holbr., 1842, Herp., Ill, 17, pi. 2; DeK., 1842, N. Y. Fauna, Rept, 

 57; B. & G., 1853, Serp., 3; Bd., 1859, P. R. R. Rep., X, pi. 24, f. 2; 

 LeC, 1853, Med. Jour., IX, 664; Jan, 1859, Rev. Mag. Zool., Extr., 

 p. 28, — 1863, Sist., 123, — 1874, Icon., livr. 46, pi. 2, f. 2; Yarrow, 

 1875, Wheeler's Rep., V, 534; Cope, 1877, Pr. Am. Phil. Soc, 64. 

 Crotalus terrificus Cope, 1859, Pr. Phil. Ac, 337; LeC, 1853, Pr. Phil. 

 Ac, 419. Caudisona adamantea Cope, 1861, Mitch. Res., 121, — 1866, 



