. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. CROCODILIANS, LIZARDS, AND SNAKES. 811 to the fifth. The muzzle is more elou^ate, hence also the nasal and loreal plates and the penultimate and ultimate superior labials are longer. The tendency of the coloration is to produce two series of alternating yellow and black spots along the anterior part of the length. The narrower form of the posterior superior labials distinguishes the type from most individuals of the Z. lateralis lateralis,
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. CROCODILIANS, LIZARDS, AND SNAKES. 811 to the fifth. The muzzle is more elou^ate, hence also the nasal and loreal plates and the penultimate and ultimate superior labials are longer. The tendency of the coloration is to produce two series of alternating yellow and black spots along the anterior part of the length. The narrower form of the posterior superior labials distinguishes the type from most individuals of the Z. lateralis lateralis, but in a specimen of the latter from Baird, California, these scales approximate nearly the form in the present subspecies. According to Mr. Van Denburgh this species is quite rare, the explorations of the California Academy of Sciences having brought to light only one other specimen. Zamenis aurigulxs Cope. Catalogue No. Number of speci- mens. Locality. From whom received. Nature of specimen. 5793 1 Cape St. Lucas, Lower Cali- fornia. ZAMENIS SCHOTTII Baird and Girard. Maaticophis schottii Baird and Girard, Cat. N. Amer. Rept., Pt. 1, Serpents, 1853, p. 160.—Baird, U. S. Mex. Bound. Surv., II, Reptiles, 1859, p. 20, pi. xviii. Head elongate, narrow, the muzzle projecting but not decurved. Inferior labials eight; temporals 2-2-2. Frontal narrow posteriorly, but not so much so as in Z. lateralis, being about three-fourths the diam- eter of the supercili- aries at the same point. Scales in fifteen rows. Tail long, entering the total length three and a half times. The general tint above is a dark greenish olive. On each side are two well-defined narrow yel- lowish-white lines; the first along the junction of the outer dorsal row and the abdominal scutelLne, involving only the adjacent angles; the second similiarly constituted in relation to the third and fourth rows (not running tlnongh the centers of the scales). The portion of the third and fourth rows not involved by the uppe
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