1032 



MR. R, J. ORTLEPP ON THE 



are conspicuous, and are found between the last two pairs of 

 ventral papillse. 



The spicules are unequal, and the left has its end broadened out 

 to form a kind of spear-head ; it is 415 ^i long and 38 fj. broad at 



Text-fig-ure 14. 



Phi/saloptera monodens Mol. 

 A = Caudal extremity of male. 

 B = Riglit and left sijicules. 



its base. The right spicule is shorter and thinner, and tapers to 

 a fine point ; it is 362 /x long by 32 ji broad at its base. 



Host: Boa constrictor. Stomach and intestine. South America. 



Types in bottle 4459 in the Vienna Mviseum. 



For affinities see Ph. ohtusissima. 



(10) Physaloptera obtusissima Molin, 1860. (Text-figure 15.) 



The specimens of this species which were examined were 

 deposited in bottles 4463 and 4470 in the Vienna Museum ; in 

 both cases the host was simply given as Colubri, N. 58. 



The cuticle is slightly reflected over the base of the lips, and is 

 provided with a fine transverse striation. The cervical papillse 

 pierce it from 130 to 225 ^j beliind the level of the posterior end 

 of the muscular oesophagus, and the excretory pore is situated 

 about 100 /A further back. 



The lips are hemispherical in lateral view and slightly flattened. 

 The external tooth is large and bluntly conical, and is slightly 

 bent oiatwai-ds ; the inner tooth is membranous, triparite, and of 

 the same height as the outer. The two external ]]-p papillse are 

 large. 



The oesophagus is straight and short ; in the female it forms 



