l8o CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



like the septal glands. They are found between the epithe- 

 lial cells and the muscular layers, the same as the septal 

 glands, and differ from the cells of the glandular crop by 

 their intense staining, and by their shape, which is also 

 similar to the septal glands. They do not appear to dis- 

 charge into the intestine. The glandular cells are apparently 

 of the same nature as the septal glands. The glands in the 

 crop in somites XIV and XV do not stain deeper than the 

 epithelial cells, but rather more faintly, and not at all with 

 the blue colors, as do the septal glands. 



SpermatheccB. — In Diplocardta Eiseni both spermathec£e 

 open immediately in front of the septa, and in the majority 

 of the other species so far known the spermathecse open 

 posterior to the septa. The present species occupies an 

 intermediate position in that one pair of spermathecse are 

 preseptal, while the other is postseptal. The preseptal 

 pores are situated very close to the septum, but the post- 

 septal pores are situated very near the center of the somite, 

 in line with and immediately in front of setae ab^ — so near 

 that the pores appear actually in the place where setae ab 

 are generally found, while these setae have been pushed 

 slightly backward. Set£e ab in somites VIII and IX are 

 differentiated sexual setee. In the only specimen sectioned 

 the posterior spermathecse are the longest, pushing back- 

 wards to the posterior end of X, but still confined in IX. 

 Each spermathecse consists of a folded muscular duct and a 

 sac-like part, the latter strongly constricted at the centre. 

 Each division is oval or semioval, in width about equal to 

 one-fourth the diameter of the body cavity. The length of 

 the sac-like parts of the spermathecae in IX is equal to or 

 even greater than the diameter of the body, or equal to the 

 two somites IX and X. The spermathecse in VIII are a 

 little smaller, which probably is due to want of space to 

 develop, they being crowded on one side by the gizzards 

 and on the other by the spermathecae in IX. 



As regards structure the spermathecae resemble those of 

 D. Udei. The lower part, at least, of the muscular duct is 

 surrounded by glandular cells and these again by stray 



