Family Ramphastidce. 191 
cies, which appear to be all well marked, are added, a very large 
increase within a few years to a group so limited. 
P. aracari is well known. The immature plumage of the bird is 
also represented, and shows a much less development of the bill, 
and a total want of the deep black which marks the culmen and the 
whole under mandible of the adult. From this bird Lichtenstein has 
separated one of the varieties of Latham, &c. under the name of P. 
recalls, distinguished by a different marking of the bill and a diffe- 
rent distribution of the colours. P. castanotis differs also by the 
colours of the bill, and from P. bilorquatus by this also, and by the 
greater proportion of red which occurs on the under parts of the lat- 
ter ; jP. Azarce is also of allied colours, but such distinctions can 
scarcely be pointed out except upon the specimen or in an accurate 
figure. The most remarkable bird in the whole work is that which 
occurs next, P. ulocomus, Gould. The head and back part of the 
neck are covered with feathers of a whalebone-like consistence, flat 
glossy black, curled at their tips, and resembling in their consistency 
what we see on the neck of Gallus Soneratii, or one or two species of 
the Ibis. It has also another peculiarity in the rich vinous tint which 
covers the mantle or back, not seen in any other species, P. hipo- 
glauciis is nearly of equal interest ; it is said to be from the most 
elevated part of the Andes, and is remarkable for its vividly colour- 
ed bill and the bluish grey tint which entirely covers the lower parts, 
combined with a yellow rump and crimson lower tail coverts. P. in- 
scriplns; Swain., and Humboldtii, IVagL come in here, singular from 
the irregular markings on the bill. P. Baillonii, Wag. (Aracari, 
Baillon, Vaill. Pt. croceus, Jard. and Selby,) is remarkable for 
the nearly uniform greenish saffron tint of the whole plumage. 
The rump is red, but it is an exception to the general colour of the 
group. P. culik, Wag. and P. maculirosiris, Lichten. and the Mo- 
nograph, are allied in form, the males in colour, but easily dis- 
tinguished by the spotted bill of the latter. P. maculatus (taken 
from the same marks on the bill) was the original name for this 
rare bird, but changed by moderns to maculirostris, perhaps without 
much necessity. To the first of these birds is also closely allied 
P. Reinrvardtii, Wag. but it is considered distinct. The bill is some- 
what intermediate between the two last, but an abdominal band of 
yellow marks their separation. P. Nattcrii, Gould, also of the same 
form, and coming near to maculirostris, is more decidedly marked 
than the last. P. Langsdorfii allied to Reinwardtii, but differing 
in the colours of the bill. These five birds, varying in form from the 
lengthened and more graceful aracari, might, to the minute di- 
