Annals N. Y. Acad. Scr. 



Volume XXIV, Plate VIII 



^Vcl'- 



■•, > 



•' M: 



'A. 



^^•^ 



Jo* 







•'.f.>K . 







^■-^ h 



Figure 1 



' -^^ 



f 



k 



^k 



/ 



/ 



Figure 2 



