ZOOL.— Vol. II.] EISEN—OLIGOCH.^TA. . 221 



There is a dorsal fore between XII and XIII but no 

 other anterior dorsal pore. The postcHtellar pores begin 

 between XX and XXI. 



The diverticles of the intestine are not connected with 

 each other, but open independently into the intestine in 

 their respective somites. The posterior pair is the largest, 

 the anterior the smallest. The two anterior pairs contain 

 large crystals. The posterior pair did not contain any 

 secretions. 



Sfermathecce. — These organs are large and sac-like, 

 each being furnished with a large rosette-like diverticle 

 containing several pear-shaped chambers strongly marked 

 on the exterior of the diverticle. The diverticle projects 

 through the anterior septum into the somite next anterior to 

 the pore. The pores open into the intersegmental grooves. 

 The specimen sectioned contains an additional spermatheca 

 on one side of the body. It opens into the intersegmental 

 groove between V and VI. It is quite rudimentary. The 

 two main pairs of spermathec£e are in somites VII and VIII. 



The testes in X and XI, and the two pairs of sperm-fun- 

 nels in the same somites, offer nothing characteristic. 

 There are two pairs of very minute, racemose sperm-sacs in 

 XI and XII, situated on the lateral and ventral sides of the 

 coelom. The two sferm-ducts fuse in XVII, and in XVIII 

 are invested with a muscular coat as thick as the rnuscular 

 part of the prostates. Both the prostates and the sperm- 

 ducts open into the equator of their respective somites. 



Dichogaster Beddard. 



General Remarks on Affinity. 



The three new species which I am enabled to describe 

 tend to further cement together the various species of this 

 genus, as well as to confirm the views held by Dr. Michael- 

 sen in regard to the affinity of the genus. He explains the 

 striking similarity between some species of Beiihamta and 



