Ixxviii INTRODUCTION. 



221. MeTALLURA SMARAGDINICOLLIS Vol. III. PL 196. 



Urolampra smaragdinkollis, Cab. et Hein. Mus. Hein. Theil iii. p. 68, note. 

 Habitat, Peru and Bolivia. 



Varied as have been the subjects hitherto referred to in the present volume, and beautiful as is the colouring of 

 many of the species, the next genus is composed of birds w^hich cannot boast of any brilliancy of colouring ; on the 

 contrary, they are clothed in very sombre attire, and have nothing to recommend them to our notice but chaste and 

 dehcate hues ; still in my opinion they are not the less interesting. 



Genus Adelomyia, Bonap. ' 



222. Adelomyia iNORNATA Vol. III. PI. 197. 



Adelisca inornatay Cab. et Hein. Mus. Hein. Theil iii. p. 72, note. 

 Habitat. Bolivia. 



223. Adelomyia melanogenys ........... Vol. III. PI. 198. 



Adelisca melanogenys, Cab. et Hein. Mus. Hein. Theil iii. p. 72. 



Habitat, New Granada. 



Precisely the same kind of difference occurs between examples of this form from Venezuela and Ecuador that 

 has been described as occurring with regard to the Metallura tyrianthina and M, Quitensis, The species of 

 Adelomyia inhabiting Ecuador and Peru is very considerably larger than the A, melanogenys from Venezuela; it has 

 more buff at the base of the tail-feathers, and a much more conspicuously spotted throat and breast ; for this 

 Ecuadorian bird I therefore propose the name of maculata : — 



224 Adelomyia maculata, Gould . Vol. III. PI. 199. 



Habitat. Ecuador. 



Avocettula and Avocettimis are the generic terms applied to the two species rendered remarkable by the points 

 of the mandibles being curved upwards in the shape of a hook : this extraordinary deviation from the usual 

 structure is doubtless designed for some especial purpose ; but what that may be, is at present unknown to us. 



In placing these two species near to each other, I do not mean to convey an idea that they are very nearly 

 alhed. One is an inhabitant of the Andes, the other of Guiana and the neighbouring countries. Nothing what- 

 ever is known respecting these singular birds. 



Genus Avocettinus, Bonap, 



225. Avocettinus eurypterus Vol. III. PI. 200. 



Opisthoprora euryptera. Cab. et Hein. Mus. Hein. Theil iii. p. 76, note. 



Habitat. The high lands of New Granada. 



Genus Avocettula, Relchenb, 



226. Avocettula REcuRviROSTRis ........... Vol. III. PI. 201. 



Trochihs avocetta, Jard. Nat. Lib. Humming Birds, vol. i. p. 78, pi. 2. 



reciirvirostris, Jard. Nat. Lib. Humming Birds, vol. ii. p. 80. 



Hylocharis avocetta, Gray & Mitch. Gen. of Birds, vol. i. p. 114, Hylocharis, sp. 12. 

 Streblorhamphus reciirvirostris, Cab. et Hein. Mus. Hein. Theil iii. p. 76. 

 Habitat. The Guianas. 



Genus Anthocephala, Ca6. 

 This generic term has been proposed by Dr. Cabanis for the bird I have figured under the name of Adelomyia 

 floriceps, which is at present the only species of the form known ; for, although I have ventured to place with it 

 my Adelomyia .^ castaneiventris, I am unable to say, from the imperfect materials at my command, whether it really 

 belongs to the present or to some other genus. 



227. Anthocephala floriceps. 



Adelomyia floriceps, Gould •..■......,. Vol III PI 202 



Anthocephala floriceps, Cab. et Hein. Mus. Hein. Theil iii. p. 72, note. 

 Habitat. Columbia. 



