302 Illinois State Laboratory of Natural History. 



Color above red or reddish brown, with numerous dusky 

 specks or spots, the latter often distinct and round, or obscure 

 and of irregular size and shape, sometimes even fusing so as 

 to form an irregular mottling of the surface. Below pale 

 orange or flesh-color, unspotted. Legs spotted above, pale be- 

 low. Lower jaw generally more or less spotted. 



Length from tip of the snout to the posterior margin of 

 the vent, 3.25; tail from the posterior margin of vent to the 

 tip, 2.25. 



Aux Plaines River. 



A specimen of the species in the collection of the Na- 

 tional Museum at Washington is the only one known from the 

 State. It was collected by Robert Kennicott. This is a fine 

 strong species of great activity, which occurs under stones 

 both on the land and in running streams of spring water. 

 The female has been observed with the body distended with 

 ova in the latter part of April. Several varieties are indicated 

 in the lists, but it is doubtful if they are entitled to that rank. 



Spelerpes longicaudus, Green. Long-tailed Salamander. 



Salamandra longicauda, Green, Jour. Acad. Nat. Sci. Phila., 

 1818, 1., p. 351.— De Kay, Nat. Hist, N. Y., I., Zool. III., Rept. 

 and Amph., 1842, p. 78, pi. 17, fig. 41.— Holbr., N. A. Herp., 

 1842, v., p. 61, pi. 19.— Baird, Jour. Acad. Nat. Sci. Thila, 2d 

 Ser, 1849, p. 287. 



Cylindrosoma longicaudatum, Dum. et 15ibr., Erp. Gen., 1854, 

 IX., p. 78. 



Spelerpes longicaudus, Cope, Free. Acad. Nat. Sci. Phila., 1869, 

 pp. 105, 107.— Smith, Tailed Amphibians, 1877, p. 84.— Bou- 

 lenger, Cat. Batr. Sal. in Coll. Brit. Mas., 2d ed , 1883, Sal. 

 Caudata, p. 64 — Davis and Rice, Bull. 111. State Lab. Nat. 

 Hist., I., No. 5, 1883, p. 13; Bull. Chicago Nat. Sci., 1883. 



Length, including the tail, about five inches. With thir- 

 teen costal folds. Body very slender. Head of moderate size, 

 slightly wider than the neck, depressed. Eyes prominent. 

 Gape large; jaws weak; margin of upper lip angulate on each 

 side and slightly excavate between the angulations. Tongue 

 attached by a distinct pedicel. Palatine series of teeth not ex- 

 tending outside the inner nares, and not continuous with the 

 sphenoidal patches. Tail extremely long and slender, subquad- 



