328 COLUBRID, 
Skuli of Boodon olivaceus. 
Synopsis of the Species. 
I. Subcaudals in two rows. 
A. Preocular not extending to upper surface of head; usually, 
three labials entering the eye. 
1. Scales in 21 or 23 rows; rostral about once and a half as 
broad as deep. 
Frontal as long as parietals .......... 1. lemniscatus, p. 329. 
Frontal shorter than parietals ........ 2. geometricus, p. 329. 
2. Scales in 23 or 25 rows; rostral nearly twice as broad as 
GOOD 0's on yaloeeet ap aay .. 3. infernalis, p. 380. . 
B. Preocular extending to upper surface of head, and often in - : ay 
contact with the frontal. ee 
_ 1. Seales in 23 rows. = 
_Subeaudals 47-61 ..... TOLER YT | . 4, virgatus,p. 331, ia 
Babeaudals 734 ats) 3.0.9 0.85.00 0 sco ee 5. guttatus, p. 331, ae . 
