1907- Southkrn. — Oligochceta of Lambay. 73 



is very characteristic. When mature, the ampulla is very large and cone- 

 shaped (fig. 7 A). At the base of the cone is a large ring-shaped diver- 

 ticulum, which contains most of the sperm. In several specimens the 

 ring of the spermatheca on one side ot the body seemed to be broken up 

 into diverticula-like r pouches (fig. 7 B), whilst the spermatheca on the 

 other side was normal. The coelomic corpuscles are of two sizes, some 

 large, clear, and disc-shaped, others small and spindle-shaped. 



Distribution. — Germany, Switzerland, Italy, Nova Zembla, Phila- 

 delphia. 



Fridericia variata, Bretscher. x 



1902. Bretscher, Rev. Suisse Z00L, p. 19. 



Bretscher described this species as resembling F. bulbosa in everything 

 except the nephridia and the position of the spermathecse. In the 

 nephridia (PI. 19, fig. 8), the duct may rise from any part of the post- 

 septal, whereas in F. bulbosa it always rises from the end. The spernia- 

 thecse are connected with the gut in the dorsal mid-line, instead of 

 laterally, as in F. bulbosa. I found specimens on Lambay, which differed 

 from the typical form of F. bulbosa in these two points only. As regards 

 the nephridia, the point of origin of the duct is very variable in many 

 species of this genus. The second difference does not seem of much im- 

 portance. Under these circumstances, and taking into consideration also 

 the fact that the two forms were obtained from the same locality, I am 

 inclined to regard F. variata as only a variation of F. bulbosa, which is 

 liable to occur in different localities. 



Distribution.— Switzerland. 



Fridericia striata (t,evins).* , 



1898. Friend, Zoologist, p. 121. 



1900. Michaelsen, " Tierreich," p. 96. 



This species is easily recognised by its spermathecce, which have two 

 large glands at the external aperture. It was recorded by Friend from 

 Yorkshire in 1898. 



Distribution.. — England, Denmark, Germany, Switzerland, Chili, 

 Uruguay. 



Fridericia Bretscher i, nom. nov. X 



1902 Fridericia parva, Bretscher, Rev. Suisse Zool., p. 25 (non F parva, 

 Moore in Proc. Acad. Phil. 1895, p. 343.) 



The name F. parva given to this species by Bretscher, had already been 

 used by Moore, so I have changed it to F Bretscheri, after Professor 

 Bretscher, of Zurich, who first described it. 



Numerous specimens were obtained from Lainbay. Whilst correspond- 

 ing well with Bretscher's Swiss species, there are several differences. The 

 setae are usually four in a bundle, though in one specimen only two were 



