124 OPHIDIA. 
Hab. Mexico, Izucar (Boucard), Guanajuato (Dugés), Colima (U.S. Nat. Mus.), Tierra 
Colorada in Guerrero (H. H. Smith).—Cusa, Cape Corrientes (Mus. Paris). 
PITUOPHIS. 
Pituophis, Holbrook, N. Amer. Herp. iv. p. 7 (1842). 
1. Pituophis deppii. | 
Elaphis pleurostictus *, Dum. & Bibr. Erpét. vii. p. 244. 
Pituophis pleurostictus, Bocourt, Miss. Sc. Mex., Rept. p. 666, t. 42. figg. 2, 2a-d, 3, 3 a-f. 
Elaphis deppei, Dum. & Bibr. Erpét. vil. p. 268. 
Pituophis deppei, Jan, Iconogr. Ophid. xxii. t. 2. fig. 2. 
Spilotes deppei, Cope, Bull. U.S. Nat. Mus. no. 82, p. 72 (1887). 
Pituophis vertebralis, Giinth. Cat. Col. Sn. p. 86 (nec Blainv.). 
Arizona jani, Cope, Proc. Ac. N. Se. Phil. xii. p. 369 (1861). 
Hab. Mexico, Hacienda del Castello in Guadalajara (A. C. Buller), Guanajuato (Dugeés), 
city of Mexico (Doorman), Buenavista, San José Acateno in Vera Cruz (Cope), 
Tehuantepec (Sumichrast). 
2. Pituophis lineaticollis. (Tab. XLVII.) 
Arizona lineaticollis, Cope, Proc. Ac. N. Se. Phil. xiii. p. 300 (1862). 
Spilotes lineaticollis, Cope, Bull. U.S. Nat. Mus. no. 82, p. 72. 
Hab. Muxico, Southern Mexican plateau (Sartorius); GuaTeMALA, Duefias (Salvin). 
Habit moderately slender, scarcely compressed. Head-shields normal; the anterior 
frontals small, not much more than one-fourth of the posterior. Rostral shield broader 
than high, not penetrating between the frontals; loreal longer than high; anterior 
ocular not reaching the vertical ; three postoculars. Hight (or nine) upper labials, the 
fourth and fifth entering the orbit. Temporals scale-like. Scales in twenty-seven 
rows, those on the back keeled. Ventrals 244; anal entire; subcaudals 68. 
Ground-colour brownish-olive, with black ornamental markings. Head without any 
spots; anterior part of the trunk with four black bands, which, posteriorly, break up 
into spots, the anterior ones on the back retaining the appearance of their twin compo- 
sition, whilst the posterior and those on the tail are more or less simple cross-bands. 
The anterior part of the abdomen is unspotted, but on the posterior part the spots of 
the flanks encroach in an irregular fashion upon the ventral shields. | 
Our single specimen of this beautiful snake is 65 inches long, of which the tail 
measures 94. 
* Iselect the term depp for this species in preference to plewrostictus, because the locality for the latter 
specimen has been erroneously given as ‘‘Monte Video,” the difficulty of recognizing the species having been 
thus unduly increased, 
