STATION IN FRESH-WATER MUSSELS. 279 
Quadrula beauchampi Marsh, ’o2 (Little Tennessee and Holston ).— 
Simpson, ’14, p. 895. 
Dia. (Simpson) : 61 per cent. 
2. FUSCONAIA PILARIS LESUEURIANA (Lea).—Dia. 45-54 per 
cent. 
Unio lesueurianus Lea, ’40 (Caney Fork and Holston).—Synonym 
to pilaris, according to Simpson. 
Dia. (Lea): 51 per cent.——Simpson’s measurements of pilaris 
. (47 and 54) belong here. 
Quadrula flexuosa Simpson, ’00 (Holston).—Simpson, ’14, p. 887. 
Dias, 51 per cent. 
3. FUSCONAIA PILARIS BURSA-PASTORIS (Wright ).—Dia. less than 
45 per cent. 
Unio bursa-pastoris Wright, ’96 (Powell R., Va.).—Quadrala bursa- 
pastoris Simpson, ’14, p. 890. 
Dia, (Simpson) : 35 per cent. 
I shall follow the same scheme as before, and go up the Ten- 
nessee and the tributaries: Holston, Clinch, Powell, etc. 
Loc. No. Max. Min. Av. 
Tennessee River. 
Kenoxevllles Msn te ica cited ora 8 64 53 57 pil. (les.) 
Holston River. 
INN ation eaeecyerciseioeremmsicc icteric: I 50 50 50 les. 
INS CO tear arse ee rte oka tee ter ese eecises 16 63 47 50 pul. (les.) 
Pod SSI os tern sit cronta erei nae 2 53 51 52 les. 
eMeeral xy Mines. 5 Ys oes ce tee creer 4 56 43 47 les. (pil.) (b.-p.) 
IN@Gitetal Ss co RCO OIE CROC TE IC EE 7 60 48 51 les. (pil.) 
lolstonm Station vacneecece codes 7 54 47 51 les. 
Gintinelipwtetalll ae cos arcs coco a otevcre B 47 43 45 les. (b.-p.) 
South Fork Holston River. 
AG EOMUS Mei Aakers 10 49 30 45 les. (b.-p.) 
latins Gir tay etestay eyes etegoncvs wise cuore 5 45 39 42 b.-p. (les.) 
Watauga River. 
IAEA Oia aimee srenseuatsthc eis revevelorone sievare I 40 40 40 b.-p. 
North Fork Holston River. 
INGUNGIAGHOOG. Gonosacoepoccadoode™ qi 54 44 50 les. (b.-p.) 
Elolstonmbnidees asses cece ne cl I 46 46 46 les. 
JEL RU USOy OL Maes sn eee certains Shee Maryn Ae ere 9 48 4I 43 b.-p. (les.) 
IMIGaClOIEL Lao aouanes pen Doom ene I 38 38 38 b.-p. 
