162 Proceedings of the Royal Irish Academy. 



concave. There are 2-4 setae in the anterior ventral bundles. The length 

 varies from 4 to 10 mm. The dorsal vessel rises in the 15th segment. The 

 salivary glands are entire, or divided into two short branches at the end. 



June, July, August. 



Habitat — Ireland. Co. Wicklow (Powerscourt). 

 Isle of Man. Port Erin. 



Distribution — Spitzbergen ; Germany ; Bohemia ; Switzerland ; Italy. 



Fridericia glandulosa Southern. 

 PI. XL, fig. 15. 



1907. F.g., Southern in Irish Nat., vol. xvi., p. 76, PI. 18, fig. 2. 



I described this species from a single mature worm found on Lambay in 

 1906. Since then I have found it in large numbers in several other localities 

 in Ireland, and have also received it from Scotland. This material 

 enables me to give a more accurate description of the species. 



The length is J 5-25 mm. Setae, 6-8 in the anterior ventral bundles. 

 The epidermis is very glandular, especially near the pores of the 

 spermathecfe. The clitellum occupies segments 12 and |13, and is covered 

 with close-set granular glands. The salivary glands (PI. xi, fig. 15) consist 

 of a short thick basal portion, and two long slender branches which may be 

 subdivided at the lip. The dorsal vessel varies greatly in point of origin. 

 In some specimens it rises in the 17th segment, in others as far back as the 

 28rd segment. The sperm-funnel is 3-6 times as long as broad. In one 

 specimen, the sperm in the neck of the funnel was bright green in colour 

 The spermatheca is of a very characteristic shape. It occasionally has glands 

 at the base. 



October — December. 



Habitat — Ireland. Co. Dublin (Lambay ; foot and summit of Montpelier). 

 Scotland. Edinburgh. 



Fridericia polychaeta Bretscher. 

 1900. F.2J., Bretscher in Rev. Suisse Zool., p. 450. 

 1907. F.p., Southern in Irish Nat., p. 75, pi. 19, fig. 13. 

 June, September, ISTovember. 

 Habitat — Ireland, Co. Kerry (Glencar ; Carrantuohal) ; Co. Dublin 



(Lambay); Co. Donegal (Milford). 

 Distribution — Switzerland. 



Fridericia minuta Bretscher, 

 1900. F. m. -t- F. auriculata, Bretscher in Eev, Suisse Zool., p. 33, 

 1907. F. m., Southern in Irish Nat., vol. xvi., PL 19, fig, 14. 



