Alien Oligoch/ets in England. By Jiev. IT. Frieyid. 157 



We may tabulate tlie results thus :- 



# 



Organs. 



Spermathecal open- 

 ing . 



Gizzard 

 Spermathecaa 



Girdle . 



Prostrate 



Asunscionis. 



In line a h 



Present 



Pear-shaped 



Saddle-formed, 

 13-20 segm. 



Macdonaldi. 



In line cd 



Rudimentary 



With outgrowths 



Saddle-formed, 

 13-20 segm. 



Rubra. 



I 



In line c d 



Absent 



i Pear or bottle- 

 ^ shaped 



Saddle-formed, 

 13-20 segm. 



,, , , , „u- J u I. U Extending back to 



About 1 mm. long Thm and short , {gist segm at least 



Bibliography. 



1. 1892. Beddard— P.Z.S., pp. 355-61. 



2. 1895. ,, Monograph of the Order Oligochaeta. 



3. 1893. EiSEN — Pro. Cal. Acad., ser. 2, ill. p. 294, et seq. 



4. 1915. Friend — Annals of Applied Biology. 



5. 1908. MicHAELSEN — Zool. Jahrb., Suppl. 11, Heft. i. pp. 24-5. 



6. 1900. „ Das Tierreich. 



7. 1895. Rosa— Boll. Mus. Torino, x. No. 204. 



