72 rPOCEEDINGS OF THE ACADEMY OF [Jan., 



b. — No oblique streak behind eye: 



«i. — Dorsal spots reaching outer row or ventrals; no distinct 



headbands, S. 0. d. doliatus. 



b\ — Black borders of dorsal spots forming rings around 

 body; no alternating spots: 



No black blotch on ventrals opposite dorsal spots; top 



of head mostly red, . . . . 4. 0. d. coccineus. 



A black blotch on ventrals opposite dorsal spots; top 



of head mostly black, . . . 5. 0. d. gentiUs. 



OpMbolus doliatus triangulus Daudin. 



Coluber triajKjulus Daud., Kept., VI, 322 (1803); Oi^Mholus eximius 

 B. and G., I. c, 87; 0. d. triangulus Cope, I. c, 610; Coronella 

 trianriulum (part) Boul., I. c, II, 200 ; Osceola dolinta triangula 

 Cope, Rep. Nat. Mus., 885. 



Largest of the subspecies; temporals 2-2; scales in 21 rows; 

 ventrals 190-214; subcaudals '43-55; length about 1,100 mm. 



Body color gray; the dorsal spots are about thirteen scales wide 

 and rarely extend below the fifth row; they are chocolate brown, 

 with black borders in adults, and quite red in the young, and 

 number 40-46 on the body, and 10-13 on the tail; a second 

 smaller alternating series on the sides, which does not reach the 

 ventrals, and a third series of irregular black blotches on the ends 

 of the ventrals; the belly is whitish, blotched with black. The first 

 dorsal spot is commonly extended forward and ends in a conspicu- 

 ous angle on the frontal, the arms of which enclose a triangular 

 light patch; there is a black band across the prefrontals, often with 

 a light centre, and a narrow dark oblique streak behind the eye, 

 bordered above by a light one. 



Hab. — Massachusetts to North Carolina; west to Wisconsin. 

 Ophibolus doliatus clericus B. and G. 



Ophibolus clericus B, and G., I. c, 88 ; 0. d. collaris, 0. d. clericus 

 Cope, I. c, 609, 610, and Rep. Nat. Mus., 886, 888 ; 0. d. temporalis 

 Cope, Am. Nat., 1893, 1068 and Rep. Nat. Mus., 889 ; Coronella 

 triangulum (part) Bonl., Z. c, II, 200. 



Shorter than 0. d. triangulus; ventrals 175-203; subcaudals 

 36-49; length 950 mm. 



The dorsal spots are less numerous, from 21-36 on the body and 

 6-10 on the tail: they are wider and end from the third to the first 

 row of scales; the alternating spots are correspondingly lower and 

 invade the ventials. The head markings are sometimes much 

 as in triangulus but less distinct; there is usually an oval light 

 patch surrounded by a black ring, in place of the triangular mark; 



