42 University of Michigan 
of lineolata Raf. (belonging to Plagiola), and consequently 
Ellipsaria becomes a synonym of Plagiola Raf.  Frierson’s 
designation of fasciolaris as the type is absolutely void. Pty- 
chobranchus Simpson will therefore stand. 
PTYCHOBRANCHUS FASCIOLARE (Rafinesque), 1820 
Type locality: Ohio, Wabash, and Kentucky rivers. 
Obliquaria (Ellipsaria) fasciolaris Rafinesque, ’20, p. 303. 
Unio phaseolus Hildreth, ’28, p. 283. 
U. fasciolaris Raf.=U. phaseolus Hild., Conrad, ’34, p. 69; Ferus- 
PEGS SS th 277 
Ptychobranchus phaseolus (Hild.), Simpson, ’00°, p. 613; '14, p. 333- 
Obl. fasciolaris Raf. = Ptych. phaseolus (Hild.), Frierson, ’14", p. 7. 
Ptychobranchus fasciolaris (Raf.) = Pt. phaseolus (Hild.), Vanatta, 
"15, p. 554 (“type” examined). 
Ellipsaria fasciolaris (Raf.), Ortmann, ’18, p. 563. 
Obl. fasciolaris (Raf.) =Ptych. phaseolus (Hill.), Walker, ’18¢, p. 
179 (“if identifiable”). 
The first part of the original description of O. fasciolaris 
Raf. contains nothing that opposes the assumption that this is 
phaseolus, but it also does not contain anything that clearly 
indicates this species. However, further on, Rafinesque says 
that there is a remarkable character in this species, consisting 
in the presence of several oblique ridges on the inside of the 
shell. This unquestionably refers to the ridges and depres- 
sions seen inside of the shell of the female of the genus Pty- 
chobranchus, and since an Ohio shell is described, this can be 
only Pt. phaseolus. Thus the specific name fasciolaris stands. 
OBLIQUARIA REFLEXA Rafinesque, 1820 
Type locality: Kentucky River and Letart Falls (Meigs 
County, Ohio). 
Obliquaria reflexa Rafinesque, ’20, p. 306. 
Unio cornutus Barnes, ’23, p. 122, pl. 4, f. 5. 
U.. reflexus Raf.=U. cornutus Bar., Conrad, 734, p. 71; Ferussac, 
254 ipo 26 Conradecs5, (pey7.npl--Aapie te 
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