DELATTRIA CLEMENCIJE. 



Blue-throated Cazique. 



Ornismya Clemencies, Less. Hist. Nat. des Ois. mou., pp. xlv et 216. pi. 80. — lb. Supp. des Ois, 



mou., p. 115, pi. 8. 

 Lampornis ClemencicB, Less. Traite d'Orn., p. 279. 



Coeligena Clemencim, Less. Ind. Gen. et Syn. des Ois. du Genre Trochikis, p. xviii 

 Mellisuga Clemenci(B, Gray and Mitch. Gen. of Birds, vol. i. p. 112, Mellisuga, sp. 16. 

 Delattria clemenciae, Bonap. Consp. Gen. Av., p. 70, Delattria, sp. 3. 

 Lampornis demencia, Bonap. Rev. et Mag. de Zool. 1854, p. 250. 

 Coeligena Clemenciae, Reiclienb. Aufz. der Colibris, p. 7. 



I BELIEVE the true and restricted habitat of Delattria Clemenci(B to be the moderately high table-land of 

 Mexico. It is a large and powerful bird, and is distinguished for the quietness of its colouring, rather than 

 for any of those brilliant metallic markings so prevalent among Humming Birds in general. M. Lesson has 

 figured both sexes in his volumes on this group of birds, but unfortunately has not given any details as to 

 their habits and economy ; tbis omission is the more to be regretted as it leaves me in doubt as to the pro- 

 priety of placing the bird in the genus Delattria ; for, although it has not their broad shafted primaries, in 

 its general colour and markings it approaches so closely to the members of the genus Campy lopt ems, that it 

 becomes a question to which of the two groups it should be referred; future research, then, must determine 

 its true situation. 



The sexes differ in the blue throat-mark of the male being entirely wanting in the opposite sex. 



The male has the crown of the head, all the upper surface, wing-coverts and flanks dull golden green, 

 changing into bronzy brown on the lower part of the back; behind the eye a semi-crescentic mark of white; 

 throat beautiful azure-blue ; under surface ashy grey ; under tail-coverts greenish grey, bordered with white ; 

 wings purplish brown ; upper tail-coverts and tail purplish black, the two lateral feathers on each side 

 largely tipped with white ; bill brownish black ; feet brown. 



The female is very similar in colour to the male, but has no blue on the throat, that part, like the under 

 surface, being grey. 



The figures represent two males and a female, of the size of life. The plant is the Adeiiocalymna 

 comosiim. 



