CH. I] EARTHWORMS AND LEECHES 35 



D. latissima Bousf. Respiratory funnel broader than long, sub- 

 rectangular, devoid of dorsal lip. Branchiae ribbon-like. 

 Total segments 20 to 30. 



D. perrieri Bousf. Respiratory funnel trefoil-shaped, devoid of 

 dorsal lip. Branchiae 2 pairs, cylindrical, three or four times 

 longer than broad, posterior pair the longer. Total segments 

 25 to 35. Length 12 mm. 



D. obtusa Udek. Respiratory funnel with dorsal lip, no secondary 

 branchiae or palps. Branchiae 2 pairs, leaf-like, short. Total 

 segments 45 to 50. 



D. miilleri Bousf. Respiratory funnel with dorsal lip, no second- 

 ary branchiae or palps. Branchiae 2 pairs, subrectangular, 

 broader than long. Total segments 70 to 95. Length about 

 13mm. 



D. limosa Leidy. Respiratory funnel with dorsal lip flanked by a 

 pair of secondary branchiae. Branchiae 2 pairs, about half as 

 broad as long. Total segments 48 to 60. Length 6 mm. 



D. furcata Ok., Bousf. First dorsal setae in 5th segment, prong- 

 forked. Respiratory funnel large, with dorsal lip fused with 

 lateral walls and carrying a pair of long secondary branchiae. 

 A pair of long slender palps on edge of funnel. Branchiae 

 2 pairs, long, subcylindrical. Total segments 35. 



genus Bohemilla Vejd. Filiform setae with a row of fine spines on 

 concave side. Ventral setae prong-forked and hooked ; first 

 dorsal on 5th segment, some very long and spined, others 

 short and simple. 



B. comata Vejd. Colourless, transparent. Generally with 2 eyes. 

 Total segments 38. Length 4 to 6 mm. In swamps, 

 streams, etc. 



genus Ripistes Duj. Very long dorsal filiform setae on 6th, 7th, 

 and 8th segments : first on 6th. Fresh water. 



R. macrochoBta (Bourne). Long setae from two to five in each 

 group, rest of dorsal setae very short. Lives in tubes or free 

 swimming. 



genus Slavina Vejd. Very long dorsal filiform, setae on 6th seg- 

 ment only. 



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