1875. ] ON THE ORIGINAL FAUNA OF RODRIGUEZ. 39 
Obs. Sp. T. fasciato quoad coloribus proxima, sed mandibulee basi 
nuda, fasciis corporis supra crebrioribus et pileo immaculato dis- 
tinguenda. 
This species of Tiger Bittern, of which Mr. T. K. Salmon has sent 
two specimens from Medellin, one in adult (the tarsi of which are 
wanting) and the other in immature dress, is certainly quite distinct 
from 7’. brasiliense, the well-known species found in Guiana, the valley 
of the Amazon, and on the Isthmus of Panama. From 7’. brasiltense 
it differs at first sight in the head being black instead of rufous and in 
having the sides of the neck blackish, banded by numerous whitish 
bars, whereas in 7’. brasiliense the neck is rufous, mottled with black 
spots. It agrees, however, with 7’. braszliense in the absence of the 
patch of feathers which in 7’. fasciatum (fig. 1, p. 38) run forward 
along the middle of the rami of the mandible (see fig. 2, p. 38). 
On reexamining the specimen in the British Museum referred by 
us in ‘ Exotic Ornithology’ to 7. fasciatum (Ex. Orn. p. 183) we find 
that we were in error in our determination. The patch of feathers 
already mentioned as existing at the base of the mandible in the 
true 7. fasciatum being absent in this specimen, it should, we believe, 
be referred to the bird which we are now describing. Nothing is 
known concerning the origin of this specimen. 
A short synopsis of the three species of Tigrisoma hitherto known 
to inhabit South America will be found in ‘Exotic Ornithology’ 
(p. 185). This synopsis expanded to include the present bird may 
stand as follows :— 
A. Species gula media plumosa lateraliter nuda. 
a’. Mandibula ad basin nuda. 
a". Pileo colloque supero castaneiS ............+seeeeseeee T. brasiliense. 
b". Pileo colloque nigris, hoc albido transfasciato ...... T. salmoni. 
6', Mandibula ad basin plumosa .............:seeeeeeeeeeceee ee T. fasciatum. 
B. Species gula omnino nuda..................cceeeceeeeenseee nese eesees T. cabanisi. 
4. Additional Evidence as to the original Fauna of Rodriguez. 
By Atrrep Newron, M.A., F.R.S., F.Z.8., &c. 
{Received January 15, 1875.] 
M. Rouillard, a magistrate of Mauritius, having occasion last 
summer to make some researches among the Archives of the Minis- 
tére de la Marine at Paris, accidentally came upon a manuscript 
‘Relation de Ile Rodrigue,’ * which fact he, with great kindness, 
immediately reported to my brother, Mr. Edward Newton, offering, 
if the latter wished, to obtain a copy of it for him. My brother 
gladly availed himself of the opportunity, and requested M. Rouil- 
lard to place the transcript in my hands. I now have the pleasure 
of exhibiting it. It gives in many respects a very precise descrip- 
tion of the island and its productions; but on this occasion I will 
content myself with extracting from it what is said 
* “Tsle de France, Correspondance g!*. Volume 12 (Archives de la Ma- 
rine), 1760.” 
