80 rROCEEDINGS OF THE ACADEMY OF [Jail., 



Hab. — From the District of Columl)ia to South Carohna and 

 west to the Alleghenies. ISot common. 



Ophibolus calligaster Harlan. 



Coluber calligaster Harl., .Tour. Acad. Phila., 1827, 359 ; 0. calligas- 

 ter Cope, I. c, 610, and Rep. Nat. Mus., i)05 ; Coronella calligaster 

 (part) Boul., I. c, II, 198. 



Larger than rhombomaculatus ; oculars 1-2; temporals 2-3; 

 upper labials 7; anterior chin shields longest; scales in 25 rows; 

 veutrals 198-210; subcaudals 41-65. Length 1,180 mm. (tail 

 165). 



Body color pale grayish brown; a dorsal series of subquadrate 

 blotches, dark brown with narrow black borders, two to three 

 scales long, eight to ten wide, somewhat emarginate before and 

 behind; the interspaces are about equal to the sjjots; a smaller 

 alternating series on the sides, which often form irregular vertical 

 bars, and a third on the outer row of scales and ends of the 

 ventials; belly yellowish, with or without square black blotches on 

 the centre. The head markings are sometimes verj' elaborate; in a 

 beautiful specimen formerly in the collection of the Zoological 

 Society, from Minnesota, the top of the head was yellowish, with 

 a brown band across the prefrontals; an arrow-headed mark, 

 brown with a black border, the base on the frontal and apex just 

 behind the parietals; a brown spot on the hinder end of the supra- 

 oculars and a faint dark oblique streak behind the eye. Labials 

 yellow. An elongated brown blotch with black border, on each 

 side, running back from the parietals ta the neck. The markings 

 are, however, not always as distinct; a second living specimen, from 

 Missouri, has the whole color darker, the lateral spots quite 

 obscure, no dark blotches on the ventrals, and the head markings 

 indistinct. The general aspect of this snake is very like rhom- 

 homaculatm, but it has 25 rows of scales; the ground color is 

 grayish brown ; the dorsal spots are less narrow, and the head 

 bands almost always distinguish it at a glance. 



Hab. — Indiana to Minnesota and southwest to Kansas and 

 northern Texas. Has been once reported from central Ohio. 



STILOSOMA A. E. Brown. 



Proc. Acad. Phila., 1890. 199 ; Cope, I. c, 595, and Rep. Nat. Mus., 

 924 ; Boul., I. c, II, 325. 



Maxillary teeth small, smooth, subequal; body very slender and 

 cylindrical; head not distinct; tail short; internasals frequently 



