REPRODUCTION AND METAMORPHOSIS OF COMMON EEL. 379 
point out that the break in my series of the development of 
Anguilla vulgaris would have been much smaller if I could 
have persuaded myself to kill and preserve one of the hemi- 
larve which I happened to meet with at the end of the year 
1892. They were really transitional stages between Lepto- 
WN AIAG << 
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ae 
SS 
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Fie. 1. 
Gener 
rae MMMM EM A gaa 
IIL 
Fie. 1.—Leptocephalus brevirostris. Natural size. 
Fie. 2.—Leptocephalus brevirostris. Later stage. Natural size. 
Fie. 3.—Anguilla vulgaris. ‘Transition stage. Natural size. 
Fie. 4.—Anguilla vulgaris. Definitive habit (Elver). Natural size. 
cephalus brevirostris and that stage which I shall describe 
further on. I published this fact in a preliminary note in the 
month of May, 1893. They were transparent with almost 
colourless blood, without any trace of pigmentation except at 
the eyes, and had lost all the larval teeth, whilst they possessed 
already very few and very minute teeth of the definitive series. 
