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SPOLIA ZEYLANICA. 
Spermathecae.—Ampulla long-stalked, pear-shaped; muscular 
duct short, hardly longer than thick, just as wide as the distal end 
of the stalk of the ampulla. In a superficial inspection the character 
of the muscular duct can hardly be seen, the long narrow distal end 
of the ampulla seeming to be part of the duct. Not until the 
preparation has been made transparent by acetic acid can the rea 
short muscular duct be detected. A small, shortly-stalked, sausage¬ 
shaped diverticulum enters the main pouch at the proximal end of the 
short muscular duct. The diverticulum is about one-fourth as long 
as the main pouch (ampulla plus muscular duct), and about one- 
Fig. 2b .—Distal extremity 
of the same seta, much enlarged. 
third as thick-as the muscular duct; it is plain externally, but its 
internal structure is somewhat complicated, as may be seen in 
preparations made pellucid by acetic acid. There seems to be no 
central lumen, but a very great number of minute seminal chambers 
filled with equally minute elliptical sperm-balls. These chambers 
form a simple layer in the thick wall of the diverticulum, their fine 
ducts probably uniting to form an axial duct. (Fig. 3.) 
Remarks.—As said before, Megascolex willeyi is one of those 
species which form a transition from the genus Notoscolex to the 
genus Megascolex. The anteclitellar and clitellar parts of the body 
which present a regular lumbricine arrangement of the setae, if cut 
off, might be determined as belonging to a species of Notoscolex. 
In this character M. willeyi resembles some Australian species, e.g., 
