Southern — Monocjvu.ph of the British and Irish Oligoehwta. 167 



Each segment has a dark purple band of pigment, alternating with a clear 

 intersegmental area. The bands are more diffused and slightly broader than 

 in the var. zebra. In the first 8 segments the pigment-rings are complete. 

 They gradually go paler till about the 13th segment, where they terminate 

 laterally just below the dorsal pair of sette. Behind this region the ventral 

 surface is unpigmented. The colour is much paler in the dorsal region of 

 segments 9 and 10, near the spermathecal pores. The first dorsal pore is 

 between the 5th and 6th segment. The distances between the setae agree 

 closely with those of the var. zehra. The setae on the 9th segment are seated 

 on papilla. The girdle occupies segments |26-|-33 ; and the tubercula are 

 on segments |^29-|^32, agreeing in these points roughly with the var. zehxi, 

 and differing from the type form. 



Numerous colour varieties of this species are found {vide fig. 1, p. 123)' 

 but Michaelsen thinks it is doubtful whether they are true varieties. 



The occurrence of closely similar forms at the extreme east and west of 

 the area of distribution of the species- is very interesting. The resemblance 

 is probably due to parallel and independent variation, and not to a close 

 genetic connection. 



Habitat — Ireland. Eoadside near Limerick. 



Distribution — Transcaucasia. 



Eisenia rosea (Sav.). 



1893. Allolobophora mucosa, Friend in IiHsh Nat., p. 122. 

 1907. E. r.. Southern in Irish Nat., vol. xvi., p. 78. 



Habitat — Ireland. Cos. Kerry, Limerick, Tipperary, Wicklow, Dublin, 

 Donegal. 



England. Lancashire (Adlington). 



Wales. Bangor (Friend in mss.). 

 Distribution — British Isles ; Europe ; North Asia ; North America. 



Helodridus (Allolobophora) caliginosus (Sav.) typicus. 



?1836. Lumbricus gordiamcs + L. lividus, K. Temple ton in Mag. Nat. 

 Hist., vol. ix., p. 135. 



1893. Allolobophora tu7'gida, Friend in Irish Nat., p. 122. 

 1897. A. t., Friend in Zoologist, p. 457. 



1894. A. Georgii (Mchlsn.), Friend in Irish Nat., p. 239. 



In 1894 Friend (torn, cit.) referred some worms from Co. Clare to the 

 species Allolobophora Georgii, Mchlsn., which had not previously been recorded 



K. I. A, PROO,, VOL. XXVII., SECT. B. [2 C] 



