112 



The tints are somewhat darker than in the United States' speci- 

 mens. 



24. Erythrospiza frontalis, Nob. PyrrTiulu frontalis, Say. 

 Nob. Am. Om. 1. t. 6. f. 1. mas. 2. foem. Fringilla hamorrhoa, 

 Licht. Wagl. Isis, 1831, p. 525. Gornion, Mexic. Nocktotl, Her- 

 nand. Thes. p. 31. c. 81. 



This beautiful bird, reckoned until now very rare, and thought to 

 be peculiar to the Rocky Mountains, in districts far removed from 

 civilization, is very common in the city of Mexico, where according 

 to Mr. Paris it takes the place of our common sparrow, provoking 

 the science of the professors in the very yard of the university. 



25. Tyrannula coronata. Sw. T.fusca; capite, crista erectd 

 rotundatd et corpore subtus coccineis. 



F(EM. griseo-fusca ; capite lavi concolore et pectore albidis ; ventre 



tanturn siibminiaceo. 

 Mmcicapa coronata, Lath. Buff. PI. Enl. 675. f. 1. male. C«r- 



denal, Mexic. 

 Its southern range extends to Demerara, where it is very common. 

 Contrary to what happens in the other species of the group, the fe- 

 male now described for the first time differs considerably from the 

 other sex. 



26. Tyranndla divaricata, Nob. T. cristata, cinereo-olivacea ; 

 mento orbitisque albiccmtibus ; dorso alisque olivaceo-riifescenti- 

 biis; alis aciiminatis ; remigibus\'^° et 5^° subceqtialibus ; 2'^°,3"°, 

 et 4*" omnium longissimis ; ccmdd divaricata corpore longiori 

 rectricibus quatuor mediis dorso concoloribus ; duabus hinc inde 

 nigricantibus, extimis duabus utri?ique dimidiato-cinereis. Ros- 

 tra brevissimo nigerrimo. 



Long. 8"; rostr. 8'"; al. 6"; caud. 4"; tars. V". 

 Riusito, Mexic. 



We have dwelt at greater length on the characters of this bird, as 

 it is likely to become the type of a new group. 



27. Lanius Ludovicianus. Berduquillo, Mexic. 



A specimen with the two middle tail feathers only entirely black, 

 in which condition it is most probably the L. excubitorides, Sw. 



When Mr. Swainson says, that he cannot reconcile the measure- 

 ments and proportions of the quills of L. Borealis and excubitor, as 

 stated by me, he is perfectly right, and no one but myself can ex- 

 plain the reason : the fact is, that while comparing I unfortunately 

 must have taken up a specimen of L. Italicus, Lath., instead of one 

 of the excubitor. Mr. Swainson has taken much pains to point out 

 several species of North American shrikes ; but we know only two 

 species of that genus in America, his L. Borealis and Ardesiaceus ; 

 which latter, by the by, should be called Ludovicianus on our ac- 

 count, if not on Brisson's. 



28. PiPRA elegantissima, Nob. P. purpureo-nigra; frontecas- 



