122 HALDEA. 



GrENUs H A li D E Aj Baird & Girard. 



Gen. Char. Head elongated, ellipsoid, distinct from the body. 

 Prefrontal plate single. Postfrontals large, entering ♦ogetber with the 

 loral into the orbit, thus suppressing the anteorbitals. Postorbital 

 one. Two nasals. Eyes proportionally large, circular. Scales cari- 

 nated. Postabdominal scutella bifid. Subcaudals divided. Unicolor. 



llclldea. striattBla, B. & G. — Grayish brown above, soiled yellow 

 beneath, (said to be reddish gray above, and salmon-colored beneath, in life). 

 A narrow light chestnut band across the middle of the occipitals, spreading 

 over the angle of the mouth. Dorsal scales in 17 rows. 



Stn. Coluber striatulus, Linn. Syst. Nat. I, 1766, 375. — Gm. Linn. Syst. 

 Nat. ed. xiii, I, iii, 1788, 1087.— Haul. Journ. Acad. Nat. Sc. Philad. V, 

 1827, 354; and Med. & Phys. Res. 1835, 117. 



Calamaria striatula, Schl. Ess. Phys. Serp. Part, descr. 1837, 43. — Holbb. 

 N. Amer. Herp. Ill, 1842, 123. PI. xxix. 



Brown Snake. 



Vertical plate elongated, hexagonal. Occipitals proportionally 

 very long, subround exteriorly'. Prefrontal subtriangular. Portion 

 of postfrontals seen from above, oblong, dilated on the face, and ap- 

 proximating the postnasal and upper part of the orbit. Rostral 

 tapering upwards. Nostril opening in the posterior margin of the 

 prenasal plate. Loral elongated, situated above the 2d and 3d 

 labials, and forming, with the postfrontal, ^he anterior part of the 

 orbit. Eyes circular. Superciliaries proportionally large. One 

 angular postorbital, elevated, the fourth labial forming the lower 

 portion of the posterior part of the orbit. Temporal shields of 

 medium size. Mouth deeply cleft. Upper labials 5 ; 4th and 5th 

 very large. Inferior labials 6; 5th disproportionally the largest. 



Body slender, subcylindrical ; tail short, and very much tapering. 

 Scales lanceolated, in 17 rows, all carinated, very narrow along the 

 back; outer row conspicuously broader, with an obsolete carination. 



