ZooL.— Vol. II.] RISEN— OLIGOCH^TA. IO3 



paper does not refer to the spermathecal pores, and in an 

 earlier paper (7) he states that these pores are on the front 

 margins of VI, VII and VIII, in front of the nephropores. 

 If this is constant, then the species described by Perrier, 

 Rosa, Horst and Beddard cannot be identical with my 

 species, in which the spermathecal pores are situated in the 

 posterior part of VI, VII and VIII, while the spermathec£e 

 themselves are in VII, VIII and IX. 



Stcprapharyngeal Glands. — (fig. 9.) This very large 

 mass of glands which discharges into the pharynx extends 

 backwards to the posterior part of somite III, where it is 

 bounded by the very thick septum separating III and IV. 

 From this septum there radiate forward a number of muscu- 

 lar strands which separate the lobes of the above glands, 

 and which are, furthermore, attached posteriorly to the 

 muscular walls of the pharynx. The glands are distinctly 

 unicellular, each with its own duct, which in many instances 

 can readily be followed to the pharynx. The discharge 

 pockets (fig. 10) are globular, with very narrow ducts. 

 The pharyngeal glands are developed only dorsally. There 

 are no other septal glands. 



Calciferous Divei'ticles. — (figs. 23, 24, 25.) The three 

 pairs of calciferous diverticles open separately into the 

 intestine from the posterior part of their respective somites. 

 Each diverticle opens independently of the others and on 

 the dorsal part of the intestine. The histology of the 

 diverticle has already been described in a general way by 

 Perrier (5), more particularly the vascular part connected 

 with these organs. I can add only a few details. 



The three pairs of calciferous diverticles are similar in 

 their structure and secretions, the latter being composed of 

 spherical lime-globules without any characteristic structure. 

 The secreting cells are narrow and only one layer thick, 

 with round or oblong nuclei slightly narrower than the cell 

 is wide. The lime-globules vary considerably in size, the 

 largest being of the same diameter as the larger nuclei of 

 the secreting cells. No crystals were found. 



( 2 ) December 15, 1S99. 



