662 
Journal of Agricultural Research 
Vol. XXVIII, No. 7 
of at least two elements. In the present species at least three elements would 
be indicated from the grooves. Situated in the space between the broad leaf 
and the corresponding lateral papilla are two accessory elements, which have not 
been described, from the other species of Cylindropharynx. These are very 
transparent and their structure is ascertained only with difficulty; their position 
and general shape are shown in Figures 1, 2, and 3. From the dorsal and ventral 
' o. / Tfun .' 
Fig. 1.—Anterior extremity in lateral view 
lips of the mouth collar broad plates project into the lumen of the mouth. Their 
elaborate structure is showm in Figures 2 and 4. Similar plates have been noted 
by Yorke and Macfie (8) in C. rhodesiensis and C . brevidauda. 
The internal leaf crown consists of 12 strikingly large, broad elements, the 
distal-free portion of each being bluntly rounded and bent inwards, and the 
basal attachment to the mouth capsule showing as a prominent crescentic line. 
A somewhat similar appearance of the attachment of the elements is seen in 
