40 EARTHWORMS AND LEECHES [CH. I 



2*5 to 5 mm. : thickness 0'2 mm. Banks of streams, under 

 stones, etc. (Kew?) 



E. pelluddus Friend. White, transparent. Lymph corpuscles by 



transmitted light transparent. Total segments 60. Length 

 19 mm. In manure. 



genus Fridericia Mchlsn. Dorsal pores present. Setae straight. 

 Ampullae of spermathecae with two diverticula. 



F. magna Friend. Preclitellar setae 3 or 4 per group, postclitellar 



2. About 6 annuli of gland cells per segment. Clitellum 

 \ llth and 12th segments. Blood red. Total segments 

 about 90. Length 35 to 40 mm. In damp places. 

 F. agricola J. P. Moore. Anterior setae 4 (rarely 5) per group, 

 posterior 2 (rarely 3). Segments 65. Length 20 to 25 mm. 

 In earth. 



Family HAPLOTAXID^;. Male apertures 2 pairs, in 12th or llth and 

 12th. Female apertures 1 or 2 pairs in furrow between 12th 

 and 13th, or between 13th and 14th also. Spermathecal 

 apertures 1 to 3 pairs, between 6th and 7th or 7th and 8th or 

 8th and 9th. Testes 2 pairs, in 10th and llth : vesiculae 

 seminales present. Ovaries 1 or 2 pairs in 12th, or 12th and 

 13th. Spermathecae without diverticula. Setae sigmoid, not 

 forked, hooked. 



genus Haplotaxis Hoffmstr. Male apertures in llth and 12th. 

 Female between 12th and 13th, and 13th and 14th. Dorsal 

 and ventral setae not of equal length. 



H. gordioides (G. L. Hartm.). Reddish. Setae solitary, 2 or 4 

 per segment ; dorsal setae shorter than ventral, only present 

 on variable number of anterior segments or absent. Prosto- 

 mium sugar-loaf shaped, often separated by a more or less 

 distinct circular furrow. First segment very short. Length 

 up to 300 mm. Thickness 1*1 mm. In swamps, ditches, 

 springs, etc. 



Family GLOSSOSCOLECID^}. Setae sigmoid, generally not forked, 

 8 per segment. No dorsal pores. Clitellum generally be- 

 ginning behind 14th segment. Male apertures in or in front of 

 clitellum, only exceptionally behind it. 



