1016 MK. R. J. ORTLEPP ON THE 



(2) Physaloptera papillotruncata Molin, 1860. (Text-fig. 5.) 



The material examined consisted of the types of the species 

 deposited in the Vienna Museum ; this material had also been 

 examined by von Drasche. 



The cuticle is very finely striated transversely, and in the 

 specimens examined it was not reflected over the lips ; a coarse 

 ringing is present in some specimens, probably due to some 

 shrinkage. 



The cervical papillae are situated from 150 to 250 yu behind the 

 level of the posterior margin of the muscular oesophagus, and the 

 excretory duct opens to the exterior either at the same level or 

 about 75 ^ further back. 



The lips are hemispherical in lateral view, and each has only 

 two teeth, namely a large and blunt outer tooth recurved out- 

 wards, and a smaller tripartite itnier tooth. Each lip bears on 

 its subdorsal and subventral outer surface a dome-like papilla. 



The CBSophagus is straight, and forms in the females from 

 l/5"6 to l/7th, and in the males l/5th of the total body-length. 

 Its muscular part is slightly thinner than the following glandular 

 part, and forms from 1/8 "G to 1/1 0th of the whole organ ; it is 

 encircled by the nerve ring at the junction of its fourth and last 

 fifths. 



Femcde. 



The females examined vai'ied in length fi^om 32 to 68 mm., 

 with a maximum breadth of from 1 to 2'1 mm. The body is 

 much attenuated in its anterior half, and slightly less so in its 

 posterior quarter, where the body is terminated by a short and 

 truncated tail l/66th to l/80th of the total body-length; its 

 caudal pores are situated just behind its middle. 



The vulva opens on a slight elevation, and is situated rela- 

 tively far back ; it divides the body in the ratio of 1 : 1 -8 to 1 : 1 '2 ; 

 it leads into a slightly curved and muscular vagina 1"5 mm. 

 long by 96 [x broad ; this passes into the egg-chamber, which is 

 r3 mm. long by 210 /x broad. The trunk which follows is of the 

 same length and breadth as the vagina ; from its posterior end 

 there arise the two uteri which at first pass forwards, but soon 

 recurve and pass down the length of the body. 



The eggs are oval and thick-shelled, measuring on the average 

 52 p. long by 30 /u broad. 



Male. 



The males are mucli smaller than the females, and are 

 attenuated in their anterior third, the rest of the body being 

 of about the same thickness ; they vary in length from 20 to 

 25 mm. with a breadth of 750 to 800 /u. 



The bursa is large, and forms about 1/lOth of the body-length ; 

 it has well-developed cuticular expansions, and is rounded at its 

 tip. The ventral surface is traversed by longitudinal rows of 

 protuberances. The foui pairs of stalked papillpe are equidistant 



