TWO NKW SPECIKS OF ONYOHOPHOBA. 501 



glands intertwine with the uterine coils. The ramifications 

 of the slime-glands seem to vary considerably in size, espe- 

 cially in transverse section — a variation which is probably due 

 to the condition of the glandular secreting cells which line 

 the interior, and to the amount of secreted matter in the 

 lumen of the glands. The length of the lining cells of the 

 slime-glands is variable, sometimes long, sometimes short, 

 but always more or less columnar. Their nuclei are large, 

 granular, and clear, and on this account a section of one of 

 the finer bi-anches of the slime-glands is distinguished with 

 ease from other small tubes, such as the finer coils of the 

 vasa deferentia. The clot of slime, also, which thev usuallv 

 contain, helps to distinguish them (fig. 41, s. g.). 



The Ovary: — The ovaries in the two species here con- 

 sidered resemble each other in their most essential features 

 to such an extent that there is no need to describe them 

 separately. In both cases the ovary is situated dorsally in 

 the legion of the third and fourth pair from the posterior 

 end of the body. It is found under the floor of the pericardium, 

 and is attached to it not by a single ligament, but b}- an exten- 

 sive surface, thus differing from all the genera as yet described. 

 This feature of itself makes it almost impossible to dissect it 

 out. Not only is it attached to the pericardium, but it spreads 

 out over the rectum and uteri like a saddle, and pushes itself 

 into any space that may be unoccupied, both between as well 

 as outside the uteri. It becomes closely adherent to the uterine 

 walls on the one hand, and to the peritoneal liniuor of the 

 body-cavity (haemocoele) on the other hand. Thus the fusion 

 of the ovary wall with two or three other structures makes it 

 almost impossible to remove it in an unbroken condition. 



In the adult the ovary consists of a shapeless sac with an 

 immense cavity which presents no sign whatever of its double 

 origin. Its walls are folded and carry follicular outgiowths 

 which are suspended in the body- cavity, and contain ova in 

 various stages of development. The ovarian cavity com- 

 municates by means of a large, irregularly shaped opening 

 with the oviducts, The opening in question is situated, as a 



