4 AßT. 4. A. YASUDA : ON THE 



Zehneria^'' Schizojjeiwn, Momordica, Lvjf'a, CUrullus, Cucumis, 

 Bryonopsis^^'' Benincosa, Lagenarla, Trichosanthes, Oiicurbiia, and 

 Gymnostemina. Of these I have examined twelve genera, leaving 

 for a future occasion the study of llukia, Zehneria, and Bryonopsis, 

 which are at present unfortunately inaccessible to me. 



I have studied the anatomical characters of the stems, hy- 

 pocotyls, . blades, petioles, cotyledons, tendrils, roots, fruits, and 

 seeds of the following sixteen species : Aciinosiemma racemosum 

 Maxim., Melothria japonica Maxim., Schizopepon hryoniœfoUus 

 Maxhn., var. japonicus Cogn., 3Iomordica cliarantia L., Luffa 

 cylindrica (L.) lloem., L. acutangula (L.) Roxb., Citrullus vulgaris 

 Schrad., Cucumis sativus L., C. Melo L., Benincasa cerifera Savi., 

 Lagenarla vulga,ris Ser., Trichosanthes cucumeroides Maxim., T. 

 japonica Hegel., T. muUllGha Miq., Ciieurhiia Fepo L., and 

 Gymnostemma cissoides Fr. et Sav. Whenever it has appeared 

 necessary, old as well as young specimens have been examined 

 and compared. In the present paper I shall treat the subject 

 in nine chapters, to be followed with a summary of the chief 

 results of my investigation. Here I wish to express my hearty 

 thanks to Prof. ])r. J. Mastumuka of the Imperial University, 

 of Tokyo, under whose care my investigations have been conducted. 

 My thanks are due also to Mr. Y. Tanaka, Dr. K. Miyabe, 

 Mr. T. Making and Mr. T. Yoshinaga, all of whom have 

 kindly supplied me with valuable materials for study. 



1) 11. KuKonvA. loc. cif. p. 12;î. 



2) Ditto, p. 12;î. 



