i9°7- Southern. — Oligochata of Lambay. 79 



Helodrllus (Allolobophora) caliginosus, (Sav.). typicus. 



? 1836. Lumbricus gordianus + LumbricuS lividus, R. Templeton, Mag. 

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



1893. Allolobophora tzirgida. Friend, Irish Naturalist, p. 122. 



1900. Michaelsen, " Tierreich, *' p. 483. 



Common in Ireland. 



Distribution. — Common in Europe ; North America. 



Helodrllus (Allolobophora) chloroticus (Sav.). 



1865. Lumbricus viridis, Johnston, " Cat. Brit. Non-par. Worms," 

 p. 60. 



1893. Allolobophora cambrica, Friend, Irish Naturalist, vol. ii., p. 122. 



1893. Allolobophora chlorotica, Friend, loc. cit. 



1900. Michaelsen, "Tierreich," p. 486. 



Very common on Lambay. Some of the specimens showed great 

 variation from the type. In one specimen the right side was normal, 

 but on the left the male pore was on the 16th seg., and the tubercula 

 pubertatis consisted of papillae on segments 31-36 inclusive. Another 

 specimen showed a similar abnormality, except that the male pores were 

 both on the 15th segment. In a third specimen the tubercula on the 

 left side were only on segments 31 and ^. 



Distribution.— Common in Europe and North America. Introduced 

 species in many parts of the world. 



Helodrilus (Dendrobaena) rub id us (Sav.) lypicus. 



1892. Allolobophora {Dendroband) arborea, Friend, fount. Linn. Soc, Zool., 

 vol. xxiv., p. 301. 



1893. Dendrobana arborea, Friend, Irish Naturalist, vol. ii., p. 239. 

 1900. Michaelsen, "Tierreich," p. 490. 



One specimen of this rare form was found on Lambay. There were 

 no papillae on the 16th segment. The girdle occupies segments 26-31. 

 The tubercula pubertatis are on segments 29 and 30 



Distribution.— British Isles (rare), Germany, France, Switzerland, 

 Siberia. 



Helodrilus (Dendrobsena) rubidus, var. subrublcunda 



(Eisen.). 



1836. ? Lumbricus xanthurzis, R Templeton, Mag. Nat. Hist., vol. ix., 



v- 235. 



1893. Allolobophora szibrubicunda, Friend, Irish Naturalist, p. 238. 



1900. Michaelsen, "Tierreich," p. 490. 



This worm is very common in Ireland. The Lambay specimens were 

 very variable. One was remarkable for the number and size of the 

 papillae on which the ventral setae were placed. These papillae 



