60 University of Michigan 
description of the color of the epidermis: blackish-brown. 
The Ohio form is pure black or greenish-black. 
Rafinesque’s Jatissima is well described, the elongated shape, 
black epidermis, and large size being mentioned, and undoubt- 
edly refers to the Ohio form. U. sageri thus becomes a syno- 
nym of recta, which is the main species, and latissima is the 
variety. 
LAMPSILIS ANODONTOIDES (Lea), 1831 
Type locality: teres, Wabash River; anodontoides, Missis- 
sipp1, Alabama, and Ohio rivers. 
Unio teres Rafinesque, ’20, p. 321. 
Unio anodontotdes Lea, ’31 (not ’34, as Simpson gives), p. 81, pl. 8, 
Paes 
Unio teres Raf. =anodontoides Lea, Conrad, ’34, p. 72; Ferussac, 
°35, p. 27; Conrad, ’36, p. 52, pl. 28 (Poulson’s “type” examined and 
figured). 
U. teres Rat., ‘Call. 00, pi 452. 
Lampsilis anodontoides (Lea), Simpson, ’14, p. 90, and L. fallaciosa 
(Smith) (799) Simpson, ’14, p. 92. 
Lampsilis anodontoides (Lea) =U. teres Raf., Utterback, ’16, p. 
179, foot-note. 
“Whether the Unio teres Raf. was based upon specimens of 
U. anodontoides Lea or Lamp. fallaciosa Smith is a question 
upon which authorities of equally good judgment have held 
opposing views and where certainty does not seem attainable. 
Conrad’s figure, said to be from a specimen labelled by Rafin- 
esque, is anodontoides; but it is larger than Rafinesque’s meas- 
urements, therefore not the original type. It has been lost. 
“Rafinesque’s type measured ‘envirow L,. 75, H. 30, D. 50 
mm. ‘The nearest specimen now measured is, L. 78, H. 33, 
D. 24 mm. In the most obese examples of either species the 
height still surpasses the diameter, which in Rafinesque’s shell 
was said to be far greater than in any specimen of either spe- 
cies mentioned. 
