358 THE RIVER-SIDE NATURALIST. 



wet gravelly ground, on the sides of rivers and burns, under 

 the masses of confervse, &c., on the front of rocks over which 

 water trickles. Very common ; a favourite bait for trout. 



3. Lumbricus anatomicus, BLACK-HEAD or BUTTON- WORM 

 (Stoddart) ; the black-headed small TAIL- WORM (Younger). 

 The anterior portion of the body of a uniform dull 

 umber-brown ; posterior portion pale orange-brown. Very 

 common in meadows and gardens, and much used for bait. 



4. Lumbricus fcetidus, the BRANDLING (Hofland, Stoddart), 

 BRANDLING or BRAMBLE- WORM (Younger). Body banded 

 with alternate brown and yellow segments. Two abbre- 

 viated impressed lines on the second segment behind the 

 head. It exhales a disagreeable odour, of which it is 

 difficult to rid oneself. Found in very old dung-heaps. 

 Much esteemed by the angler. 



5. The Lumbricus mridis, with greenish body; dull and 

 inactive ; throwing itself into an imperfect coil when dis- 

 turbed. Found under stones in pastures and by the burn- 

 side, and under the dried droppings of cattle ; is generally 

 rejected by the angler as bait for fish. 



Some of the family Hirudinidce (Leeches) may be ob- 

 served at times. Although the medicinal Leech (Hirudo 

 medicinalis) is a British species, it is very rare, and not 

 likely to come under our notice. Not so with the HORSE- 

 LEECH (Hcemopsis sanguisuga), which is frequently found 

 in ponds and lakes. It is much larger than the medicinal 

 species, but its teeth are comparatively blunt ; it feeds 

 greedily on earth-worms. It is of a greenish-black colour 

 on the dorsal, and yellowish green on the ventral, surface, 

 marked with irregular spots ; eyes indistinct. 



A number of small leeches of the family Glossoporidce 

 (genus Glossiphinia), many of them transparent, so that 

 the viscera may be seen, inhabit our ponds and streams. 

 They are tenants of pure fresh-waters, incapable of swim- 

 ming. One is the chequered leech (G. tessellata), found in 

 weedy ponds ; another (G. sexoculata) is found in lakes, 

 ponds, and rivulets ; common in the river White Adder, 

 Berwickshire. 



