170 THE BOOK OF NATURE STUDY 



A . cMoroticus may be green, yellow, or reddish ; is from 2 to 

 3 inches long ; occurs in rich soil, frequently in " spent " manure 

 that has been put round the roots of trees. The clitellum is from 

 the 2gth to 37th segment ; the tubercula pubertatis are small, and 

 on the 3ist, 33rd and 35th segments. The setae are closely paired. 



Lumbricus terrestris is of a brown-violet colour in its dorsal 

 anterior region, but reddish pink otherwise. Its hinder end is 

 markedly flattened. It is very common in gardens and all 

 cultivated soil. The clitellum reaches from the 3ist or 32nd to 

 the 37th segment ; the tubercula pubertatis from the 33rd to 36th. 

 The setae at the extremities are larger than those in the mid- 

 region, and are not so closely paired. The length may be as 

 much as 12 inches. 



BIBLIOGRAPHY. Darwin, Vegetable Mould and Earthworms ; Marshall and 

 Hurst, Practical Zoology ; Hatchett Jackson, Forms of Animal Life (Rolleston) ; 

 Howes, Atlas of Practical Elementary Biology : Latter, Natural History of some 

 Common Animals ; Davenport, Introduction to Zoology. 



