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very many respects similar to the preceding, I now 
learn that they have been observed about several of the 
savanna ponds, and that they first attracted notice by 
the loud sort of modulated snoring noise which they 
made when the horses and cattle were led to the 
evening watering. None of the persons at present 
residingfin the plains ever knew or ever heard of these 
reptiles ; they were therefore unable to account for 
the noise when it first drew their attention. As they 
traced it to the pond, they were surprised to find it 
proceeding from the very water; and when they 
caught the creature that made it, and found what it 
was, they discovered that there were several others 
about the margin of the pond, which leaped in, and 
concealed themselves by diving as soon as they ap- 
proached. We can only account for the present dis- 
covery of these fulh grown reptiles in these places 
by the late inundations. Several gullies intersect the 
plains from the hills to the sea; and we may suppose 
that they had been swept down through these drains, 
and carried by the fiooding waters into the savannas. 
If it be with these, as with frogs and toads in general, 
that the male alone is vocal, and that the voice is 
the call of courtship, we may expect, as long as rains 
keep our ponds unexhausted, that these reptiles will 
maintain their possession of the savannas. They bid 
fair to perpetuate their tenancy. ‘ Limosoque nov(B 
saliunt in gurgite ranae.’ 
‘‘ Just after I had set down the preceding remarks, 
a living specimen of the second Batrachian was 
brought me from a pond at the foot of the hills on 
the opposite banks of the river Cobre. The pond 
