GENEKA AIS'D SPECIES. 183 



In the adult male, the almost straight beak is 

 of a whitish colour, black towards its extremity ; 

 the head, the neck, the shoulders, and the back 

 are pale golden green ; the upper tail-coverts pale 

 greyish-green. The gorget consists of scaly fea- 

 thers of a brilliant golden green ; the chest is 

 snowy white ; the abdomen and flanks are light 

 yellow ; the under tail-coverts greyish-white ; the 

 wings, almost straight, are of a pale grey ; the tail 

 pale glossy greyish-green ; the feet are whitish. 



Locality : Guayquil, Peru. 



The Prince of Canino enumerates thirteen 

 species as belonging to this genus, of which one, 

 the Trochilus flavescens of Loddiges, he regards 

 as abnormal. 



The general colour of this species is golden- 

 green ; the head and throat are golden smarag- 

 dine ; the tail slightly forked, and of a yellowish- 

 white ; the two middle feathers altogether golden 

 olive, and the rest margined with this colour ; 

 wings brownish-black ; beak of moderate length, 

 and straight. 



Locality : ? In Gould's cabinet. 



The two preceding genera present us with 

 several species of which little is known, and 

 which still require careful revision. Of their 

 habits we can say nothing with certainty. 



Genus THAUMATIUS, Bonaparte (Les Erne- 

 raudes, Lesson ; Basilinna, in part, Boie ; Polyt- 

 mus, in part, Gray). 



