260 W. B. BEKBAM. 



Clitellura occupies five to nine somites (rarely more), 

 commencing somewhere between Somites xxvi and xxxii. 



Spermiducal pores on Somite xv. 



Sperm-sacs. — Four pairs, in Somites ix, x, xi, and xii, 

 unconnected from side to side, so that the testes and ciliated 

 rosettes lie freely in Somites x and xi. 



Tubercula pubertatis are two or three pairs, sometimes 

 in consecutive somites, sometimes on alternate somites (ten 

 pairs in one species) : rarely absent as in A. subrubicunda. 



[Colour more varied than in Lumbricus; from deep sienna- 

 brown to light transparent grey, sometimes green. First 

 dorsal pore may begin as far forwards as Somite iv, or more 

 posteriorly. 



Spermathecae usually two pairs (sometimes more, or they 

 may be absent as in A. subrubicunda), opening either ante- 

 riorly or posteriorly, either near the lateral setse or near the 

 dorsal line. 



Spermatophores fixed behind the genital pores. 



CEsophageal pouches in Somite x, and calciferous glands 

 in XI. 



Gizzard as in Lumbricus.] 



Species 1. A. chlorotica, Sav., 1832; Europe, N. America 

 (= L. riparius, Hofi'm., 1845). 

 3. A. foetida, Sav., 1829; Europe, N. America, 

 Australia (= L. olidus, Hoffm., 1845). 



3. A. submontana, Vejd., 1875; Bohemia. 



4. A. fraissei, Orley, 1881; Balearic Isles. 



5. A. mediterranea, Orley, 1881; Balearic Isles. 



6. A. nordenskjoldii, Eisen ; Scandinavia, 



Siberia, Azores, Newfoundland. 



7. A. subrubicunda, Eisen, 1873; South Siberia, 



Europe, Magellan. 



8. A. tumid a, Eisen, 1874; Denmark, N. America. 



9. A. parva, Eisen, 1874; Denmark, N. America. 



10. A. arborea, Eisen, 1874; Denmark. 



11. A. dubiosa, Orley, 1881; Europe. 



