I9i6. 
Friend. — Notes on Irish Oligochacts. 
23 
Though the other species placed under Saenuris in John- 
ston's Catalogue are either Tubificids or Lumbriculids, it 
is evident that this is a red-blooded Enchytraeid (Pachy- 
drilid). But confusion begins when we turn to Grube,(2) 
who makes it a Tubificid. 
" Gattung Saenuris. 
Uebersicht der Arten. 
f Solang als der Leib breit, viel langer als die Hakenborsten, 
Haar- j letztere zu je 4 oder 5, Blut roth, etwa 140-160 Segmente. 
formige J S. variegata. 
Borsten 1 Wenig langer als die Hakenborsten, letztere zu je 8 oder 9, 
j Blut orangegelb, etwa 70 Segmente. 
L 5. lineata." 
From the days of Grube till those of Michaelsen(3) the 
confusion has gradually become worse confounded. 
On the occasion of my visit to Ireland in March, 1913, 
I first gained a clue to the solution of the mystery so far 
as the Irish material is concerned. Along with certain 
Pachydrilids found in and around Dublin were also some 
specimens of a Tubificid whose identity has not yet been 
determined. But it was during the recent examination of a 
large quantity of material from the Manchester sewage 
works that I was able to place the matter in its true light. 
Michaelsen(4), in 1909, published an account of Lumbricillus 
lineatus O.F.M., and added that it was doubtful whether 
this species can be differentiated from L. subterraneus Vejd., 
which is remarkable for its long, thin, sperm-funnel. I 
would further suggest that we have to enquire whether it 
can be distinguished from L. verrucosus Clap. ? Now both 
subterraneus and verrucosus are recorded by Southern for 
Ireland, who further draws attention to the fact that 
L. litoreus Hesse is practically indistinguishable from 
lineatus O.F.M. 
' Some years ago (1912) I found typical specimens of 
Lumbricillus lineatus O.F.M. at Middlesborough, and in the 
same year it was found by me in great abundance in a 
streamlet at Blackfordby, near Ashby-de-la-Zouch, and by 
the Canal in Nottingham, as well as by the Gelt, at Gilsland. 
In recording the fact in the Zoologist for that year I gave 
some attention to the present question, and shewed that 
two different genera had been confused. 
