460 



TRANS. ST. LOUIS ACAD. SCIENCE. 



XJa:xit»elli«eree. — Tcit>le II. 



O 



c 

 <u 



S 



s 



u ■ 



With exposed Nectar : 



Erigenia bulbosa 



Chserophyllum procumbens . 



Osmorrhiza longistylis 



Ileracleum lanatum 



Eulophus Americanus 



Crjptotasnia Canadensis 



Pastinaca sativa 



Cicuta maculata 



Sium cicuticfolium 



Tiedmannia rigida 



With concealed Nectar : 



Zizia aurea 



PoljtEenia Nuttallii 



Sanicula Maiilandica 



Pimpinella integei rima 



Eryngium yuccEefolium 



28 



20 



10 



67 



36 



26 



127 



143 



105 



80 



67 

 26 



14 

 10 

 76 



30 



25 

 10 



87 



52 

 22 

 92 

 72 



4 

 5 

 2 

 20 

 9 



XI 



56 

 2;^ 



58 I 28 

 52 I 24 



48 ' 16 



13 2 



[ 

 13 I 2 



4 

 30 



27 



12 



8 



18 



7 

 12 



30 

 21 



13 



35 



II 



II 



9 



25 



49 

 29 



14 



97 



122 



92 



72 



32 



15 



3 



I 



51 



30 



25 

 10 



87 

 52 

 22 



92 



72 



58 



13 



13 

 9 



41 



