8 MUSSELS OF BIG BUFFALO FORK OF WHITE EIVER, 



scarce; Strophitus edentulus^ scarce; fantail, Tritogonla tuberculata^ 

 scarce; spectacle case, black sand-shell, Lampsllis lienosus, 7 taken; 

 L. venustus, scarce; green miigget, red mugget, grass miicket, L. 

 Uffamentinus, most abundant species; butterfly, L. ventricosus. 



The river widens just below this bed and runs over a gravel bar, 

 much of the water evidently flowing through the gravel. It was so 

 shallow that the boats, which drew about 5 inches of water, passed 

 with difficulty. 



Station 9. — July 29. About 2 miles from camp H lay a mussel 

 bed about one-half mile long on a shoal. Many shells had been 

 opened, but none recently. Live mussels were plentiful, many of 

 them lying in sand between rocks. On this, as well as other beds 

 observed, the shells were in such rocky places that tongs or other 

 appliances could not be used, and all shells taken by pearl hunters 

 were taken by hand. In an hour's collecting about 150 live shells 

 were secured. 



Shells found at station 9 : Red niggerhead, Quadrula tuberculata, 

 very abundant ; white niggerhead, Q. coccinea, scarce ; Unio gihto- 

 sus, common; niggertoe, Alasmidonta ti'uncata; A. calceola, 1 found; 

 sand shell, Symphynota costata^ abundant; Lampsilis ozarkensis^ 

 abundant ; L. vennstus, scarce ; gi'een mugget, red mugget, grass 

 mucket, L. Ugamentinus, most abundant species; butterfly, L. ven- 

 tricosus, scarce; L. hreviculus hritisi, scarce. 



Station 10. — July 29. About 5|^ miles below camp H a small bed 

 was found, and two other small beds were observed, one about 3|, 

 the other about 5 miles from camp. 



Shells found at station 10: Red niggerhead, Quadrula tuherculata, 

 scarce; ZJn'io gihhosiis, scarce; sand mussel, Sympliynota costata^ 

 scarce: fantail, Tritogonia tuhercidata. scarce; spectacle case, Lamp- 

 sllis rectus, scarce; green mugget, red mugget, grass mucket, Z. llga- 

 mentinus, most abundant species. 



Station 11. — July 30. About 2 miles below camp I there was a 

 mussel bed less than one-half mile in length. Pearl hunters had 

 opened many shells, but not recently. 



Shells found at station 11: TJnio glhhosus, scarce; sand mussel, 

 Symphynota costata, scarce; spectacle case, Lampsilis rectus; L. ve- 

 nustus, scarce ; green mugget, red mugget, grass mucket, Z. Ugamen- 

 tinus, abundant; butterfly, Z. ventricosus ; Z. hreviculus hrittsi, scarce. 



Station 12. — July 30. About 3^ miles below camp I a small bed 

 was found. 



Shells taken at station 12: White niggerhead, Quadrula coccinea, 

 scarce; TJnio gibhosus; sand mussel, Sympliynota costata; Strophitus 

 edentulus, scarce ; spectacle case, Lampsilis rectus; green mugget, red 

 mugget, grass mugget, Z. ligamentiyius, abundant; Z. hreviculus 

 hrittsi. scarce. 



