REPORT ON THE STUDY AND APPRAISAL, ETC. 11 
coming Pilsbry-Ortman-Walker nomenclature, which follows 
more closely the rules of modern zoological nomenclature. 
ee & s = 2 gol Aes as 
COMMON NAME SCIENTIFIC NAME 
Commercial Species After Simpson After Ortmann 
Niiseerhead) mciiccu owsteecnd Quadrula ebenus ....... Fusconaja ebena (Lea.) 
Nir Sernhesdeu re arcdeetare ete Quadrula _solida......... Pleurobema catillus (Con.) 
Eirolcoryim Nath Payee ree ok, Obovaria’ ellipsis ...... Obovaria olivaria (Raf.) 
Bumpler backs © tyceen mac Quadrula pustulosa ....|Quadrulu pustulosa (Lea.) 
Maple Leaf ..... 5 Re SA Quadrula lachrymosa .../Quadrula quadrula (Raf.) 
Monkey=Bacel iki et fe2 os Quadrula metanevra..... Quadrula metanevra (Raf.) _ 
Purple Pimple Back ....|Quadrula tuberculata ..|Rotundaria granifera (Lea.) 
Three Horn Warty Back.|Obliquaria reflexa ..... Obliquaria reflexa (Raf.) 
roe Oe! Para ccamne ects ia ave Quadrula undata ....... Fusconaja undata (Barnes.) 
Blae-Boimt « fntyecbice aie bible Quadrula plicata ...... Amblema peruviana_ (Lam.) 
Phree-RidSey = secs cee « Quadrula undulata ....|Amblema costata (Raf.) 
Washi Board os. tissi coed Quadrula heros ........ Megalonais heros (Say.) 
Bache Ornunin ss weclcs. cules Tritogonia tuberculata ..|Quadrula verrucosa (Raf.) 
IVIAI CK Gti Bis ios tle, 3. Nevius (anaes antior Lampsilis ligamentina .|Actinonais carinata (Barnes.) 
PAT OANIS ENVEL «ses crelaejeres sak Lampsilis higginsii...... Lampsilis higginsii (Lea.) 
Lake Pepin Mucbet ..... Lampsilis luteola ...... Lampsilis siliquoidea (Barnes.) 
PetUer EL Ver. ieee erey lean e\t oiatere oe Plaziola securis |....4<.%. Plagiola lineolata (Raf.) 
WMGerget Oe: Fi. conc t Saen Plagiola elegans ....... Amyedalonais truncata (Raf.) 
Pocket Book s54)/0. 22-208 Lampsilis ventricosa ..|Lampsilis ventricosa (Barnes.) 
Yellow Sand Shell ...... Lampsilis anodontoides | Lampsilis anodontoides (Lea.) 
Slough Sand Shell........ Lampsilis fallaciosa ...}|Lampsilis fallaciosa (Smith.) 
Black -Sand Shell ...... ampsilis: “rectal <7: Eurynia recta (Lam.) 
Bulle Head fete maak as Pleurobema aesopus ...|Plethobasus cyphyus (Raf.) 
(No Common Name) ...|Lampsilis subrostrata ..|Eurynia subrostrata (Say.) 
White Hell Splitter ......|Symphynota complanata |Lasmigona complanata (Barnes.) 
Byuted=Shell Gale osc 82s Symphynota costata ...|Lasmigona costata (Raf.) 
Pink Heel Splitter ...... Lampsilis alata ....... Prostera alata (Say.) 
Rock Pocket Book ...... Arecidens confragosus ..|Arecidens confragosus (Say.) 
Pilephamt, Bares: fe ...<as TJnio crassidens ........ JElliptio niger, (Raf.) 
SD IKG cd eine cise srotas cee Wi; gt iDpOSUS |. aScrexs Elliptio dilatatus (Raf.) 
Ohio River Pig Toe (?)..|Pleurobema pyramidatus |Pleurobema pyramidatum (Lam.) 
Ke OGL sation aercrltteleats os Alasmidonta marginata |Alasmidonta marginata (Say.) 
Suear | SDOOMN 2.tre a dereiefc< Plagiola donaciformis .|Amygdalonaias donaciformis (Lea.) 
NON-COMMERCIAL SPECIES * 
Slope Bucketiia. ces chess Anodonta grandis ..... Anodonta grandis (Say.) 
Paper] Onell “sy s.cicrscs vies core Anodonta corpulenta....|Anodonta corpulenta (Cooper.) 
GUA WW SHMOOUS wi. odors Geta hace Anodonta imbecillis ...|Anecdonta imbecillis (Say.) 
PAC DTM SENS. oreis cies c.ce stots Strophitus edentulus ...|Strophitus edentulus (Say.) 
Lampsilis gracilis ....|Leptodea fragilis (Raf.) 
Lampsilis laevissima ...|Proptera laevissima (Lea.) 
MMU OX 1, cers slercreuve erate Lampsilis parva ....... Carunculina parva (Barnes.) 
Nloate Me eae rercoce ccs Truncilla triquetra wes Truncilla triquetra (Raf.) 
VI. RESULTS. 
These include data compiled upon the absolute and relative 
abundance of each species of mussel found in the areas ap- 
praised, together with such geographical or other information 
likely to be of use in expediting the rechecking of these results 
after a period of protection, or which might have a bearing 
upon propagation experiments. The number of shells of 
each species collected in each locality is given under the head- 
ing of the latter, and the percentage of this in the total catch 
in the locality is indicated. The average of the three percen- 
tages thus obtained for each species in each area is taken to 
