SYNOPSES AND DESCRIPTIONS Vfl 
DIADOPHIS DECORATUS. 
CoRONELLA DECORATA Gitnther, 1858, Cat. Col. Snakes, 35. 
Body moderate, slightly depressed; head distinct, depressed; tail slen- 
der, near one third of the total. Eye moderate, pupil round. Crown- 
shields regular. Internasals and prefrontals broad. Frontal broad, acute- 
angled posteriorly. Parietals large, in length equal to that of the head in 
front of them. Nasal small, in two parts, nostril between. Loreal an 
irregular polygon, in contact with six plates. Anteorbitals three, lower 
very small, in notch between third and fourth labials. Postoculars two, 
lower smaller. Temporals 1+2, or fused with labial. Labials eight, 
fourth and fifth in orbit, seventh large and abruptly higher than the 
sixth. Infralabials nine, sixth large. Submentals two pairs, subequal, 
posterior diverging. Scales smooth, flat, rounded at the extremity, in 17 
rows, outer broader. Ventrals 160. Anal bifid. Subeaudals 107 pairs, 
sometimes a few simple. 
Greyish-brown, head darker, lighter toward the tail. A narrow white 
dark-edged band from the muzzle along the facial angle through the upper 
postocular slightly downward to the neck, then rising and occupying the 
fifth row of scales on the body, where it becomes brownish, and continues 
as a light line above a narrow line of dark on the fourth row. A narrow 
black line on the vertebral row. Labials and ventral surface whitish, the 
anterior labials and each extremity of the ventrals with a spot of dark. 
Length 9§ inches; tail 32 inches. Mountains of Alvarez, Mexico. 
DIADOPHIS FULVIVITTIS. 
Rwapinea FuLyivirtis Cope, 1875, Batr. and Rept. Costa Rica, 139, 
Very likely to prove a variety of the preceding. “Head small, not very 
distinct from the body. Frontal a little longer than the suture from it to 
the nasals, and a little shorter than the common suture of the occipitals, 
two-thirds as wide as long. Rostral small, low; postnasal higher than 
long; loreal as high as long. Superior labials eight, seventh highest; 
temporals 1—1. Inferior labials ten, sixth largest, in contact with middle 
of post geneials. Scales poreless, in 17 rows. Gastrosteges 177. Anal 
divided; urosteges 91. 
“Color above fulvous, below fulvous yellow. The three brown bands 
extend from the end of the nose to near the end of the tail; the lateral 
involves the fourth and half of each adjacent row of scales, and is black- 
