160 Proceedings of the Royal Irish Academy. 



1907. F. s., Southern in Irish Nat., vol. xvi., p. 73. 



This species is readily recognized by the shape of the spermatheca, 

 number of setas, &c. The salivary glands are usually only feebly branched, 

 but in specimens from Edinburgh the branching was very copious. 



February, June, July, November. 



Habitat — Ireland. Co. Kerry (Glencar) ; Co. Wicklow (Calary Bog), 

 Co. Dublin (Friarstown Glen ; Lambay). 

 Scotland. Midlothian (Eavelrig) ; Edinburgh. 



Distribution — England; Denmark; Germany; Switzerland; Chili; 

 Uruguay. 



Fridericia valdensis Issel. 



1905. F. v., Issel in Zool. Jahrb., Bd. xxii., p. 464, T. 14, fig. 23-27. 



This species, recently described by Issel from Italy, has been found in 

 two localities in Co. Wicklow. The Irish specimens agree very closely with 

 Issel's description and figures in all points but one. Issel figures the duct of 

 the nephridium as rising from the end of the postseptal, whereas in the Irish 

 specimens it rises just behind the septum. This, however, is a very variable 

 point in the genus. 



August, October. 



Habitat — Ireland. Co. Wicklow (Powerscourt ; Bray Head). 



Distribution — Italy . 



Fridericia Bretscheri Southern. 



1902. F. parva, Bretscher in Eev. Suisse Zool., tom. x., p, 25 (non 1895, 

 F. parva, Moore in Proc. Acad. Philadelp., p. 343). 



1907. F. B., Southern in Irish Nat., vol. xvi., p. 73, PI. 19, fig. 9. 



The Irish specimens of this species differ from the Swiss in some details, 

 as I have already pointed out (tom. cit.). Worms received from Edinburgh 

 differ still more widely from the type. The anterior bundles contain 4, 

 rarely 5, seta3. The spermatheca has no gland at the base. The brain is 

 not much longer than broad, and the salivary glands are unbranched. 

 Whether these variations will necessitate the creation of a new species 

 can only be settled by examination of more specimens. The Irish worms are 

 intermediate between the Scotch and the Italian. 



February, May, September, October. 



Habitat — Ireland. Co. Dublin (Friarstown Glen ; summit of Mont- 

 pelier). 

 Scotland. Edinburgh. 



Distribution — Switzerland. 



