244 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 
Effna formation in Virginia: Porterfield Quarry, 5 miles east of Saltville, 
Maccrady (T.V.A. 218-NW) Quadrangle. 
Oranda formation in Virginia: 4 miles northwest of Linville Station, Broad- 
way (15’) Quadrangle. 
Whitesburg formation in Tennessee: 24 miles southeast of Whitesburg, Bulls 
Gap (T.V.A. 171-SE) Quadrangle. 
Discussion.—This species is characterized by its elongate oval form with nar- 
rowly rounded extremities and fairly wide inner borders. The specimens are 
usually lustrous black in color but may weather to a reddish hue as southwest 
of Bland, Va. Interior details are very difficult to determine. 
Elliptoglossa ovalis differs from E. sylvanica in its sharper beaks, more elon- 
gated form, and narrower extremities. 
ELLIPTOGLOSSA ROTUNDATA Cooper, new species 
Plate 24, B, figures 3-6 
This species may be distinguished from EF. ovalis by its proportionately rounder 
anterior and posterior margins, more rounded sides, and stronger concentric 
undulations. The same features distinguish it from E. sylvanica although with 
the latter species the differences are not so striking. 
Measurements in mm.—Holotype, length 5.0, width 3.6. 
Types.—Holotype: 71885a; figured paratypes: 109386a, 71885c,d; unfigured 
paratypes: 71885b,e-m, 109386b-d. 
Horizon and locality —Edinburg formation (Liberty Hall facies) in Virginia: 
On Middle River, 4 mile north of Verona, Staunton (15’) Quadrangle; 500 feet 
northwest of the entrance to Endless Caverns, Mount Jackson (15’) Quad- 
rangle; Reservoir Hill, Wytheville; 2 miles northeast of Dale Enterprise, Har- 
risonburg (15’) Quadrangle ; Lee Highway, 14 miles northeast of Harrisonburg, 
Harrisonburg (15’) Quadrangle; 14 miles east of Tenth Legion, Mount Jackson 
(15’) Quadrangle. 
Rich Valley formation in Virginia: At Porterfield Quarry, 5 miles east of 
Saltville, Maccrady (T.V.A. 218-NW) Quadrangle. 
ELLIPTOGLOSSA SYLVANICA Cooper, new species 
Plate 23, D, figures 7-13 
Shell small, lustrous with alternating bands of light and darker brown, a little 
longer than wide and with the greatest width at about the middle. Sides gently 
rounded ; posterior and anterior margins about equally rounded. Umbonal re- 
gion minutely radiate. Surface marked by fine concentric undulations. 
Pedicle valve moderately convex in lateral profile ; strongly convex in anterior 
profile and with the flanks gently concave in this profile. Brachial valve slightly 
deeper than the pedicle one, a little more convex in lateral profile; flanks 
flattened. 
