CROCODILIANS, LIZARDS, AND SNAKES. 1009 



AMPHIARDIS INORNATUS Garman. 



AmpJiiardis inoriiatiin Garman, N. Amer. Rept., 1883, p. 97. — Cope, Proc. U. S. Nat. 

 Mus., XI, 1888, ]). .391.— BOULENGER, Cat. Snakes Brit. Mus., 1, 1893, p. 290. 



The following description is copied from Garinau : 



Moderately stout, slightly <lepresseil; head small, not distinct from the neck, 

 subconical; tail short, tapering to a point. Snout short, blunt. Eye moderate. 

 Nostrils anterior, directed horizontally in the anterior portion of the divided nasal. 

 Nine head shields. Rostral very small, not reaching the top of the head. Two 

 internasals (loft smaller in each specimen). Loreal elongate, with the prefrontal 

 forming the anterior border of the orbit. Prefrontals as broad as long. One post- 

 orbital. Temporals 1+1. Labials live, third and fourth in orbit, fifth largest. 

 Infralabials six, fifth largest. Posterior submentals half as large as the anterior. 

 Scales cariuate, lustrous, in seventeen rows ; dorsal narrow ; outer broad and faintly 

 keeled; ventrals 125-129. Anal divided. Subcaudals thirty-six pairs. 



Uniform brownish olive on the dorsal rows. No band on the occiput. Ventrals 

 whitish, tinged with olive on the bases. Largest specimen, total length 10 fV inches; 

 tail IV'a inches. 



Two specimens of this species are known, both found near Dallas, in 

 northern Texas. I have had the opportunity of examining them in the 

 Museum of Comparative Zoology through the kindness of Dr. Agassiz 

 and Mr. Garman. 



HALDEA Baird and Girard. 



Haldea Baird and Girard, Cat. N. Amer. Rept., Pt. 1, Serpents, 18.53, p. 122. — 



BouLENGER, Cat. Suakes Brit. Mus., 1, 1893, p. 290. 

 Conocephalus Bibron, Prodrome des Ophidiens, 1853, p. 46. 



Head elongated, ellipsoid, distinct from the body. Iiiternasal plate 

 single. Prefrontals large, entering together with the loreal into the 

 orbit, thus suppressing the anteorbitals. Postorbital one. Two nasals. 

 I *upil circular. Scales carinated. Postabdominal scutella bifid. Sub- 

 caudals divided. 



This genus has the form and probably the habits of theCalamarinie, 

 but the continuity of the vertebral hypapophyses throughout the ver- 

 tebral column and the characters of the hemipenis indicate that its affini- 

 ties are with the Natricina?, of which group it is probably a degenerate 

 offshoot. 



HALDEA STRIATULA Linnaeus. 



Haldea striatula Baird and Girard, Cat. N. Amer. Rept., Pt. 1, Serp., 1853, p. 



122. — Coi'E, Check-list N. Amer. Batr. Rept., 1875, p. 35. — Boulenger, Cat. 



Snakes Brit. Mus., 1, 1893, p. 291. 

 Coluber striatiilus Linn.eus, Syst. Nat., I, 1766, p. 375. — G.melin, Linna-us Syst. 



Nat., 13th ed., 1788, p. 1887.— Harlan, Journ. Acad. Nat. Sci. Phila., V, 



1827, p. 354. 

 Calamaria xiriaUda Schlegel, Ess. Phys. Serp., 1837, p. 43. — IIolbrook, N. 



Amer. Horp., Ill, 1842, p. 123, pi. xxix. 

 Conocephalus sinaiiilus Dumeril and Bibron, Erp. G6u., VII, 1854, p. 140. 



Vertical plate elongated, hexagonal. Occipitals in'oportionately very 

 long, subround exteriorly. Prefrontal subtriangular. Portion of i)ost- 

 frontals seen from above, oblong, dilated on the face, and approximat- 

 NAT MUS 98 04 



