592 MR. SCLATER ON TWO SPECIES OF MAMMALS. [Nov. 25, 
THRYOTHORUS NISORIUS, sp. nov. (Plate XLV.) 
Troglodytes nisorius, Licht. in Mus. Berol.; ej. Nomenel. p. 34. 
Supra lete rufus, alis caudaque nigro regulariter transfasciatis : 
superciliis elongatis albis: lateribus capitis albis nigricante 
variegatis : subtus albus, nigro omnino transvittatus, fere sicut 
in Sylvia nisorio: tectricibus subalaribus albo nigroque varie- 
gatis: rostro et pedibus corneis: long. tota 5°5, ale 2°7, 
caude 2°2, tarsi 0°85 poll. Angl. 
Hab. In Mexico, Real Arriba (Deppe). 
Mus. Berolinensi. 
Obs. Proximus 7. pleurosticto, mihi, sed corpore subtus omnino 
transfasciato diversus. 
This little Wren was one of the many novelties discovered by 
Herrn Deppe and Schiede during their travels in Mexico. In 1830 
a sale-list of the duplicate specimens of these travellers was printed 
at Berlin by W. Deppe, which contained very short descriptions of 
some of the new species by the late Prof. Lichtenstein*. At the 
close of the list is announced the approaching publication of a 
‘Prodromus Faunze Mexican’ by the latter zoologist, which pro- 
mise, however, was never redeemed. 
This tract is now very scarce, and I have never seen the original, 
although I have made repeated inquiries after it at Berlin and else- 
where. It has, however, been lately reprinted by Dr. Cabanis in his 
‘ Journal fiir Ornithologie’ +. Dr. Cabanis has likewise promised us 
a critique on the new species described in it according to the typical 
specimens of the Berlin Museum, which I hope will shortly appear, 
as it will be of great advantage to the students of Mexican Orni- 
thology. The characters given by Prof. Lichtenstein are, in many 
cases, so short that without some such assistance it is impossible to 
to recognize the “new species’’ with certainty. 
9. Remarks on two Species of Mammals described from spe- 
cimens recently living im the Society’s Gardens. By 
P. L. Sctarer, M.A., Ph.D., F.R.S., Secretary to the 
Society. 
(Plate XLVI.) 
1. Mico sericevs, Gray, P. Z. 8. 1868, p. 256. 
On March 21, 1868, Mr. Bartlett purchased for the Society, 
from a dealer in Liverpool, a living male specimen of a small Mar- 
moset Monkey which was quite new to me. It was stated to have 
been obtained out of a vessel coming froin Para, and to be the only 
* Pyeis-Verzeichniss der Siugethiere, Vogel, Amphibien, Fische und Krebse, 
welche yon den Herren Deppe und Schiede in Mexico gesammelt worden, und 
bei dem unterzeichneten Bevollmachtigten in Berlin gegen baare Zahlung in 
Preuss. Courant zu erhalten sind. Berlin, 1830. 
+ Journ. f. Orn. 1863, p. 54. 
