Wi PASSERINE. 319 
in air with nearly as much facility as certain Flies, and it is thus 
that they hum about flowers and fly with more proportionate ra- 
pidity than any other bird. Their gizzard is very small, and they 
have no czcum, an additional mark of their affinity with the Wood- 
peckers. They live'singly, defend their nests with courage, and 
fight desperately with each other. 
_ The name of Trocuitus, Lac., is especially reserved for such as 
have the beak arcuated; some of them are distinguished by the pro- 
longation of the intermediate quills of their tail. We will mention 
but one of the largest and most beautiful. 
Troch. pella; Colibri Topaze, Enl. 596. Purple-maronne; head, 
black; throat of the most brilliant topaz-yellow, changing into 
green, surrounded by black.(1) 
The lateral quills of the tail are very long in others;(2) several 
have tails moderately forked;(3) in the greater number it is round 
“or square.(4) We call, 
t 
‘ OrrHORHYNcHts, Lacep. 
- Such as have a straight beak; some of them have tufted heads.(5) 
Others have tufts or elongated feathers on the sides of the head,(6) 
and among them are found some with a pointed and very long tail.(7) 
(1) Add Z'r. superciliosus, Enl. 600, 3; Vieill. 17, 18, 19;—Tr. leuwcurus, Enl. 
600, 3;—7'. squalidus, Natterer, Col. 120, f. 1;—T'r. brasiliensis, Lath. Col. 120, 
poy “ 
(2) Tr. forficatus, Edw. 33, Vieill. 30;—polithmus, Edw. 34, Vieill. 67, and 
particularly the magnificent Peruvian species, with the refulgent gold tail, Tr. 
chrysurus, Cuv. 
(3) Tr. elegans, Vieill. 14. 
(4) Tr. mango, L. ; Enl. I, 680, 2 and 3, Vieill. 7;—Zr. nzvius, Dumont, Col. 
120, f. 3; Tr. gutturalis, Enl. 671;—T'. tawmantias, Enl. 600, 1;—T*r. violaceus, Enl. 
600, 2;—Z'r. cinereus, Vieill. 5;—Z'r- melanogaster, Vieill. 75;—T'r. jugularis, Sh. 
Edw. 266, 1; Vieill. 4;—7Z'r. holosericeus, Sh., Vieill. 6 and 65;—T'r. punctatus, Sh., 
Vieill. 8;—T'. pectoralis, Sh. 9 and 70;—T'r. aurulentus, Sh. Vieill. 12;—7T'r. aureo- 
viridis, Sh., Vieill. 15;—7'r. hirsutus, Gm. or brasiliensis, Sh. Vieill. 20;—T’r. albus, 
Vieill. 11;—7%. viridis, Vieill. 15;—T?. margaritaceus, Enl. 680, 1, Vieill. 16;—T'r. 
multicolor, Gm. or Harlequin Hummingbird, Lath. Supp. pl. cxi, Vieill. 79:—Tr. 
lazulus, Vieill. Gal. 179. , 
(5) Tr. cristatus, Edw. 37; Enl. 227, 1; Vieill. 47, 48;—T'r. pileatus (puniceus, 
Gm.) Vieill. 63;—7'. Lalandii, Vieill. 18, f. 1 and 2;—Orthor. stephanioides, Less. 
and Garn. Voy. de la Coquille, pl. xxxi, No. 2. 
(6) Zr. ornatus, Enl. 640, 3, Vieill. 49, 50;—TZ%. chalybeus, Vieill. 66, f. 2;— 
Tr. petasophorus, P. Max. Col. 203, 3;—TZr. scutatus, Natter., Col. 299, 3;—T'r. 
magnificus, lig. Col. 299, 9.7, mesoleucos, Temm. Col. 317. , 
(7) Tr. bilophus, Temm. 
N.B. M. Swainson has named those of our Hummingbirds, the middle quills of 
whose tail are elongated, Pumrornis; those with a round or square tail, Lamror- 
