A HISTORY OF HERTFORDSHIRE 



11. Rudd. Leuciscus erytbrophtkalmus, Linn. 



12. Roach. Leuciscus rutilus, Linn. 



13. Dace. Leuciscus dolnila, Linn. (L. vul- 

 garly Day). 



14. Minnow. Leuciscus phoxinus, Linn. 



15. Tench. Tinea vulgaris, Cuv. 



Like the carp, more confined to still waters. 



1 6. Bream. Abramis brama. Linn. 

 Recorded from the Lea and the lower 



reaches of the Gade. 



17. White Bream. Abramis blicca y Bl. 

 From the Lea. 



1 8. Bleak. Alburnus lucidusj Heck. & Kner. 

 Recorded from the Lea and the Bulbourne. 



The ' Fresh-water Sprat ' of Izaak Walton. 



19. Loach. Nemacbilus barbatula, Linn. 

 Recorded from the Lea, the Bulbourne and 



the Gade. 



MALACOPTERYGII 



20. Salmon. Salmo salar, Linn. 



Was probably extinct as a Hertfordshire fish 

 before the end of the eighteenth century. Its 

 presence in the Lea is last mentioned in 1735 

 by Farmer, in his Abbey of Waltham. The 

 Lea Conservancy forbid the capture of any 

 salmon of less than 4 Ib. weight. 



21. Trout. Salmo trutta, Linn. 



The small brown trout are found in most 

 rivers. A fine salmon-trout was reported to 

 have been taken from the Lea in 1856. 



22. Grayling. Thymallus vexillifer t Linn. 



It is doubtful whether this fine fish now 

 occurs in any Hertfordshire river. Several 

 attempts have been made to reintroduce it 

 both into the Colne and the Lea, and various 

 reports as to its being on the increase or the 

 reverse have been made. 



APODSS 



23. Eel. Anguilla vulgaris, Turt. 



CYCLOSTOMES 



24. Lampern. Petromyzon fluviatilis, Linn. 



Recorded from the Lea and the Gade ; said to be tolerably abundant. 



190 



