vn] EARTHWORMS OF OCEANIC ISLANDS 1 1 1 



P. schmardae, P. hesperiduni, P. morrisi, P. per- 

 Jdnsi, P. biserialls (= P. elongata), Allolobophora 

 putris (=Kinberg's Hypogaeon havaicum), A.foetida, 

 A. caliginosa, A. nordenshibldi, A. limicola, A. rosea, 

 and finally the well-known Pontoscolex corethrurus. 

 Of these species there is only one which is even 

 possibly a form limited to the Sandwich Islands, and 

 that is Pheretima perhinsi, a species which I myself 

 at first described as a new form, but which was after- 

 wards regarded as identical with P. heterocliaeta by 

 Michaelsen, and later still resuscitated by Ude. All 

 the others are found in many parts of the world and 

 not only in the nearest mainland to the archipelago 

 which we are now considering. I have had already 

 occasion to speak of some of them as peregrine forms, 

 especially of Pontoscolex corethrurus which occurs 

 all over the world. 



The conditions which have been recently revealed 

 by an exploration of the antarctic islands mentioned 

 above are totally different. Dr Benham has enu- 

 merated the following species from those islands, viz. 

 Notiodrilus haplocystis, N. fallax, N. aucllaudicus, 

 N. campbellicmus, N. macquariensis, Plagiochaeta 

 plunleti, Rhododrilus cochayni, Leptodrilus leptome- 

 rus, L. magneticns, Plutellus aucldandicus, Diporo- 

 chaeta heterockaeta, D. brachysoma, D. heloplido, 

 D. perionycliopsis among the Megascolecidae, besides 

 PhreodrUtis cdmpbeUiafms, Pelodr'dus tubercidatus, 



