462 Mr. H. A. Baylis on new 
The genital pores are irregularly alternating. The cirrus- 
sac is pear-shaped and measures 0°125 mm. long and 0°04 mm. 
in thickness at its widest part, which is near the inner end. 
There are twelve or more testes in a compact group in the 
middle of the segment. The female genital apparatus calls 
for no special comment: the uterus (fig. 3, Ut.) shows the 
usual more or less complete division into two lateral portions, 
and a well-developed paruterine organ (fig. 3, P.) is present 
in front of it in the posterior segments. The ova do not 
appear to pass into the paruterine organ until after the 
separation of the segments from the strobila. The oncho- 
spheres measure 28 w in diameter. 
5. Davainea debilis, sp. n. 
Host: Anastomus lamelligerus. (Open-bill Stork.) 
Of this species the collection contains only one specimen, 
which measures about 45 mm. in length. The posterior 
segments are much contracted, and the length actually 
Fig. 4. 
Davainea debilis ; diagram of the genital cloaca and terminal portions of 
the genital ducts. (Reconstructed from horizontal sections.) The 
overlapping lateral borders of three consecutive segments are seen. 
C., cirrus; Cl.,, distal non-muscular portion of genital cloaca; C7.,, 
proximal muscular portion of same; C.S., cirrus-sac; V., vagina; 
V.D., vas deferens. 
attained would probably be much greater. Anteriorly the 
worm is extremely slender, but it increases rapidly in width 
until the posterior segments measure about 3 mm. across. 
The scolex measures only 0:2 mm. across and is very 
feebly developed. ‘lhe suckers appear as mere cushion-like 
thickenings. They were apparently armed with hooks about 
