SYSTEMATIC LIST AND SYNONYMY. 135 



OPHIDI A— Continued. 



SlBON ANNULATUM 



Fitz., 1826, Neue Class., 60; Cope, 1S60, Pr. Phil. Ac., 266. 



Coluber annidutus Linn., 1754, Mils. Ad. Fridr., pi. 8, f. 2, — 1758, Syst, 



I, 224, — 1766, Syst, I, 386; Mus. Linck., I, No. 76; Gmclin, 1788, 

 Syst. Linn., I, 1111; Shaw, 1802, Gen. Zool., Ill, 490; Latr., 1802, 

 Kept, IV, 127; Daud., 1803, Rept, VI, 369; Kuhl, 1820, Beitr., 85; 

 Men-., 1820, Amph., Ill, — 1821, Beitr., fasc. 3, p. 25, pi. 3-1. Dipsas 

 annulata Schleg., 1837, Ess. Phys., I, 165, II, 294; DeFil., 1840, Cat. 

 Serp.; D. & B., 1854, Erp. Gen., VII, 1141; Martens, 1856, Mus. Bcrl., 

 32. Lycodon annukdus Boie, 1827, Isis, XN, 527. Leptodeira annulata 

 Fitz., 1843, Syst., 27; Gthr., 1S58, Cat, 166. Eteirodipsas annxdata 

 Jan, 1863, Sist, 105. 



Seba, 1735, II, pi. 41, f. 3, pi. 57, f. 1, pi. 71, f. 3; Scheuchser, 

 1735, Phys. Sacr., IV, pi. 652, f. 2; Knorr, 1767, Delic. Surin. Nat, 



II, pi. 6, f. 2; Daub., 1771, Diet. Encycl., 591; LaC, 1789, Quad. 

 Ovip., II, 312; Bechst, 1802, Ueb. LaC, IV, 107, pi. 13, f. 1; Merr., 

 1790, Beitr., pt. I, pi. 11 ; Herm., 1804, Obs. Zool., I, 285. 



Mexico to Brazil. 



Var. SEPTENTRIONALE 17 



Dipsas septentrionalis Kenn., 1859, Mex. Bound. Surv., II, 16, pi. VIII, 



f. 1; Bd., 1859, P. K. K. Kep., X, pi. 25, f. 18. Sibon septentrionalis 



Cope, 18G0, Pr. Phil. Ac., 226. Sibon annulatum subsp. septmtrionule 



Cope, 1S75, Checklist, 38. Eteirodipsas annulata var. septentrionalis 



Jan, 1872, Icon., livr. 39, pi. 1, f. 2. 



Texas; Arizona; Mexico. 



Sibon torquatum 18 



Leptodcira torquata Gthr., 1860, Ann. Mag. LLipsujlena torquata Cope, 

 1861, Pr. Phil. Ac, 302. Nicaragua. 

 Var. pacificum 



Leptodeira paeifica Cope, 1868, Pr. Phil. Ac, 310. 



Oculars 2 — 2. Loreal higher than long. Labials 7, third and fourth 

 in orbit Temporals 1 + 2. Scales in 19 rows, biporous, all nearly 

 equal. Ventrals 164. Anal bifid. Subcaudals 61 pairs. Back brown- 

 ish, with four series of blackish brown very small spots, of which the 

 median pair forms usually a short cross-bar by their union. A broad 

 black bar across the nape ; a short brown line behind each eye, andji 

 number of dots on the crown. Below uniform cream color. 



Mazatlan, Mexico. 



Var. personatujj 



Leptodeira personala Cope, 1868, Pr. Phil. Ac, 310. 



Oculars 1—2. Loreal as high as long. Labials 8, fourth and fifth 

 in orbit. Temporals 1+2. Scales in 23 rows, biporous. Ventrals 173; 

 anal divided. Cream color, with broad black cross bands on the dorsal 

 region, 23 between nape and vent. Top of head black. A broad yel- 

 lowish collar. 



Mazatlan, Mexico. 



Sibon discolor 18 



Leptodeira discolor Gthr., 1860, Pr. Zool. Soc. Lond., 317. 



Oaxaca, Mexico. 



