184 



Tropidoelonium lineatum, (Hallowell). 

 Streaked Snake. 



Microps lineatus, Hallowell, 1856, 1, 241 ; Iropidochnmm lineatum, 

 Cope, 1860, 1, 76; H. Garman, 61, iii, 187; Storeria lineata, S. Gar- 

 man, 1883. 13, 32, pi. 1, fig. 4. 



This species will almost certainly yet be taken within the limits of our 

 State. It has been found lately by Prof. Harry Garman, at Urbana, 

 Ills., within 35 miles of the Indiana line. It has been reported from 

 Hughes, Ohio, by Dr. Yarrow (10, 131), but I am informed by Dr. L. 

 Stejneger, of the National Museum, that the specimen so determined is a 

 Storeria. 



This species greatly resembles Tropidonotus rigidus, but the generic 

 characters are quite different. The scales are in 19 rows, are strongly 

 carinated, 'and the animal has a very rough appearance. The ventrals 

 are from 138 to 150; the subcaudals 26 to 35 pairs. The 6th upper 

 labial has been crowded from its place and lies above and between the 

 5th and 7th. The ground-color above is ashy-brown. Along the middle 

 of the back there is a streak of gray one scale and two half scales wide, 

 and a similar band along each side on the 2d and 3d rows of scales. A 

 row of black spots on the bases of the lowest row of scales, another just 

 above the lateral line, and a third on each side of the dorsal streak. 

 Belly gray or yellow, with two rows of black spots, one on each side of 

 the middle line, the two spots on many of the ventrals narrowly con- 

 fluent. 



The size is somewhat greater than that attained by Storeria dekayi. 

 The distribution of the species is from Texas to Kansas and east to Illi- 

 nois. 



Agkistrodon piscivorus, (LaC). 



Water Moccasin; Mokason. 



Crotalus piscivorus, LaCepede, 1789, Serp. ii, 130; Trigonocephalus 

 piscivorus, Holbrook, 1842, 54-, iii, 33, pi. 7 ; Toxicophis piscivorus, Baird 

 and Girard, 1853, G, 19; Ancistrodon jiiscivorus, Garman, 1883, 13, 121, 

 pi. 8, fig. 2. 



This is an abundant snake everywhere about the water courses of the 

 Southern States. It has not yet been seen by any scientific observer in 

 any locality in Indiana, although Mr. Robert Ridgway says that he has 

 been informed" that it was abundant at one time about Viucenues. I be- 

 lieve that it will yet be found along the lower portions of the Wabash 

 river and the neighboring parts of the Ohio. It is found in numbers in 

 the swamps in Union county, Illinois, and this is little further south than 



