Genitalia of {Anch{roceY>h&\\iH) polypteri. 2.59 



linear position, and was grapo-lilce. Near tiie middle of the 

 ovary I was able to identify a more darkly stained globular 

 shell-gland. The ovary is medial, posterior, and ventral iti 

 each segment (fig. 4). 



In a few segments I was able to trace a thick duct, which 

 I believe to be the vagina. From the stained specimens 

 nothing more was recognizable. From a few transverse 

 secti(^ns indications of a coiled condition were visible (fig. 3). 



The genital opening was ventral and median. The pore 

 was surrounded by muscles, and the deeply stained area under 

 it suggested a cirrus. 



I found no separate opening for the vagina, so I concluded 

 it opened together with the cirrus into a genital atrium 



Uterus. — The uterus appeared to be sac-like and distended. 

 In every segment it was located more dorsally, causing a 

 " bulging" of the dorsal surface. 



It was situated, now on the right of the genital pore, with 

 its convexity to the right, and now to the left, with the con- 

 vexity to the left. This condition alternated irregularly. In 

 nearly all my stained segments and transverse segments the 

 uterus was distended and tilled with eggs. In some of the 

 stanied segments the beginnings or " aulagen " of the uterus 

 showed up as stained curves either to the right or to the left 

 of tiie genital pore. There was a separate uterine pore in 

 every ripe segment. This aperture was situated at the ante- 

 rior portion on the ventral surface, and displaced slightly to 

 the left or to the right of the genital pore and the median 

 line — a condition depending upon the position of the uterus 

 (fig. 5). 



Vitelline Glands. 



These were confined to t!ie lateral fields of the segments, 

 and more or less in parallel rows. Transverse sections 

 showed them to be situated near the dorsal and ventral 

 surfaces respectively (fig. •4). 



Lateral canals were visible as two longitudinal stained lines 

 in the immature segments. In the sections they were not 

 always visible, as they were small. In some they appeared 

 laterally as two narrow ducts. I was unable to trace any 

 transverse canals either in the stained segments or in the few 

 sections. 



Chalk bodies were visible, especially in the sections, as 

 numerous refringent granules in the body-wall. 



