274 Transactions of the Society. 



species. Spermatliecse well developed, gradually narrowing into 

 the short duct, with no spermatophores present. 



First British Becord. — Southern, Proc. Roy. Irish Acad., xxvii. 

 (1909) sect. B, No. 8, p. 136. Ireland. Pond in Phoenix Park, 

 Dublin ; R. Annalee, Ballyhaise, Co. Cavan. We need accurate 

 notes on many points relating to this genus, in order that a clear 

 idea of the boundary lines between the species, if they exist, may 

 be obtained. The Continental authorities incline to the opinion 

 that this is not a distinct species. It seems to be decidedly dis- 

 tinct in this country. 



5. Limnodrilus aurostriatus Southern. 



Worms of a bright red colour in front ; tail paler, each segment 

 with two golden rings. Length 25-30 mm., very slender. Setae 

 6-8 per bundle, teeth nearly equal, but lower one thicker than 

 upper. Teeth parallel in front bundles, divergent in posterior seg- 

 ments. Chloragogen cells begin in segment five. Brain almost 

 square ; contractile hearts in 8 and 9. Spermatliecse consisting of 

 large sac and wide duct, connected by a narrow passage ; each with 

 2 or 3 spermatophores. Atrium long and slender, penis-sheath 

 8-9 X 1. 



As it resembles L. hoffmeisteri in some particulars, the differ- 

 ences in pharynx, integumental vessels, setse, penis-sheath and 

 spermatheceee may be noted. 



First British Becord. — Southern, Proc. Roy. Irish Acad., xxvii. 

 (1909) sect. B, No. 8, pp. 136-7. Since found by me at Malvern 

 and elsewhere. 



6. Limnodrilus parvus Southern. 



Comparatively small, 12-15 mm. in length, with rounded pro- 

 stomium and smooth epidermis. Segments not biannulate. Setae 

 3-5 in front, lower tooth slightly longer and thicker than upper. 

 Brain rounded, deeply concave behind, slightly convex before. 

 Pharynx reaches back to fifth segment. Hearts in 8 and 9. Sper- 

 matheca consists of pear-shaped sac, no spermatophores seen. 

 Penis-sheath 9-12 x 1, irregularly curved. 



First British Becord. — Southern, Proc. Roy. Irish Acad., xxvii. 

 (1909) sect. B, No. 8, p. 138. Counties Dublin and Cavan, Ireland ; 

 Adlington, Lancashire. I have since found it at Malvern and with 

 the next at Kew; also at Repton, May 12, 1911, both adult and 

 young. 



7. Limnodrilus auranticccus Friend. 



Length 15-20 mm. Segments ranging from 65-90 in the adult. 

 Setae usually 4 or 5 in front, rarely 6 ; 3-4 in the middle and 3-1 

 in the posterior regions. They vary materially in size in different 



