47 



Troch. Mitchellii. 

 Troch. de Mitchell. Malė adulte : bec noir, droit, cylindrique, 

 emplumė sur ses bases, toutes les parties supėrieures du corps 

 vert-iioir lėgėrement bronzė ; gorge devant et cotes du cou garnis 

 d'un hausse-col brillant violet-immortelle foncė, poitrine blanch- 

 atre, abdomen et flanes gris-noir ; ailes a remiges ėtroites gris- 

 noir ; queue trės bifurquėe a rectrices ėtroites, allongėes et ter- 

 minėes en pointe, gris-noir violacė, les mediaires tres courtes et 

 arrondies ; pattes noires dėnudėes. 

 Long. Bec 15 mm. ; ailes 33 mm.; rect. ext. 32 mm.; mediaires 

 14 mm. 

 Patrie. Zimapan. 



Rem.—Cet oiseau ressemble par sa taille et ses formes a V0rnis7}i. 

 amethystinus de Less. 



Troch. Norrisii. 

 Troch. de Norris. Malė adulte : bec dilatė a la base, presąue 

 droit, blanchatre et noir vers son extrėmit^ ; tėte, cou, scapulaire, 

 dos vert dorė pale, couverture caudale gris-vert pale ; gorge de- 

 vant et cotės du cou, ėcaiUės de plumes vert-dorė brillant, ėpi- 

 gastre blanc de neigė, abdomen et flanes fauve clair, sous-cau- 

 dales gris-blanc ; ailes presąue droites gris-pale ; queue a rec- 

 trices ėgales, allongėes, acuminėes, toutes gris-vert pale lui- 

 sant ; pattes blanchatres dėnudėes. 

 Long. Bec 18 mm.; ailes 55 mm.; rect. 35 mm. 

 Patrie. Guayaquil. 



Rem. — Cet ois. ressemble par sa taille et ses formes a VOrnism. 

 Amagili de Lesson et au Troch. coraUirostris de Bourc. et Muls. 

 Cette mėme espėce existe dans la collection de la Sociėtė Zool. 



M. Bourcier remarked that he had received permission from 

 Mr. Conrad Loddiges to lay before the Society the preceding descrip- 

 tion of the species w'hich still remained unique or uncharacterized ia 

 the superb collection formed by the late Mr. Loddiges. He was de- 

 sirous also of acknowledging the kindness and courtesy with which 

 Mr. Loddiges' MSS. notes had been communicated to him ; and of 

 bearing testimony to the value of the ideas of a classification of Tro- 

 chiUdffi which had evidently existed in the mind of that coUector, 

 although unfortunately he had never reduced them to writing. The 

 collection of Mr. Loddiges has been renowned among ornithologists 

 for many years ; and there is no doubt that he was the first possessor 

 of almost all the most beautiful and interesting forms existing in this 

 family. The extent and richness of his cabinet cannot be better 

 shown than by the fact of its including, at the present moment, so 

 large a number of species which have hitherto escaped the extraor- 

 dinary attention of other Trochilidists and their collectors. 



In the possession of Mr. Loddiges, Mr. Gould, Mr. Rucker and 

 Mr. Leadbeater, and in the British Museum, M. Bourcier had be- 

 come acquainted with thirty species not kno-n-n in the coUections of 

 France. 



