UPPER TENNESSEE DRAINAGE. 587 
78. TRUNCILLA LENIOR (Lea), 1843. 
Unio lenior Lea, ’43.—Truncilla lenior Simpson, ’14, p. IT. 
AW fare species: Ihave found it im the Clinch, Speers Ferry, 
Scott Co., Va.; in North Fork Holston, Rotherwood, Hawkins Co., 
Tenn. ; in South Fork Holston, Pactolus, Sullivan Co., Tenn.; and in 
the uppermost Holston proper, Church Hill, Hawkins Co., Tenn. 
There are specimens in the Walker coll. (from Mrs. Andrews), 
labeled: Holston River, Knox Co. (probably Tennessee River), but 
Lewis has not recorded it from these parts. For the rest, it is miss- 
ing in this region, but it turns up again in the Tennessee drainage in 
North Alabama: Simpson gives it from Paint Rock River, Wood- 
ville, Jackson Co., Ala., and the Carnegie Museum possesses quite a 
number of specimens from this river at Paint Rock, Holly Tree, and 
Trenton, Jackson Co., Ala. 
The male of this species may be easily recognized by the fine 
denticles on the margin of the posterior end; for the rest, it looks 
like a pale-colored Eurynia nebulosa. 
Type locality: Stones River, Tenn. (Cumberland drainage; but 
missing in the list of Cumberland shells published by Wilson & 
@lark,214)) 
79. TRUNCILLA HAYSIANA (Lea), 1833. 
Unio haysianus Lea, ’33.—Unio haysianus Lewis, ’71.—Unio haysi- 
anus Pilsbry & Rhoads, ’96.—Truncilla haysiana Ortmann, 712), 
P- 357 (anatomy) —Truncilla haysiana Ortmann, ’13b, p. 311.— 
Truncilla haysiana Goodrich, ’13, p. 95.—Truncilla haysiana 
Simpson, ’14, p. 16. 
Widely distributed, but always only in small numbers at a given 
locality. Tennessee in Knox Co. (Lewis) and at Knoxville (Pilsbry 
& Rhoads) ; Little Tennessee, Coytee, Loudon Co., Tenn. (Walker 
coll.) ; in the Powell, up to Pennington Gap, Lee Co., Va.; in the 
Clinch, up to Raven, Tazewell Co., Va.; in the Holston, it goes in 
the North Fork to Hilton, Scott Co., Va., and in the South Fork to 
Pactolus, Sullivan Co., Tenn. 
Type locality: Cumberland River. 
