/#/; 
390 Dr. E. Coues on Central-American Laridse. 
eembles. It is probably, however, S. paradisea-, which opinion 
is strengthened by the fact of there being an adult S, paradisea 
in the collection, but no S. hirundo . 
a . Very young 5, San Jose de Guatemala, December 8, 1862. 
10. Sterna forsteri, Nuttall. 
An immature bird, in pretty much the plumage figured and 
described by Audubon under the name of &. havelli , and identical 
with numerous examples of young S. forsteri in the Smithsonian 
Museum. 
a. Young 5, Lake of Duenas, Guatemala, October 28,1862. 
11. Sterna antillarum, Coues, ex Lesson. 
An adult example, identical w r ith numerous North American 
and Antillean specimens. 
a. Adult 5 , Glovers Reef, British Honduras, May 14,1862; 
and other specimens. 
In Cabanis* e Journal fur Ornithologie/ 1861, p. 346, Dr. 
Gundlach has recently presented this species under the name of 
Sterna super ciliaris, Vieillot; which he considers to be the same as 
S. antillarum , Jjesson, and S . frenata , Gambel. The impropriety 
of this identification of Vieillot's name will be, I think, quite 
palpable from the following considerations:— Sterna supwci- 
liaris, Vieillot (Enc. Meth. p. 350), is based upon the “Hati 
ceja blan£a" of Azara, and is consequently a South American 
bird. Now A'ieillot's description, though brief and somewhat 
vague, unquestionably refers to some species, in immature plu¬ 
mage, of the subgenus Stemula , i. e. a small species, like S. mi - 
nuta, S. antillarum, &c.,with a white-fronted lunula. I have before 
me a Sternule, collected at Bogota, which is exceedingly distinct 
both from the North American S» antillarum and from the Euro¬ 
pean S.minuta , and which I think is unquestionably the species re¬ 
ferred to by Azara and Vieillot. It is at once to be distinguished 
from S. minuta by the plumbeous of the mantle extending over the 
rump and upper tail-coverts. Agreeing with S . antillarum in this 
respect, it differs from the latter species as follows : — It is con¬ 
siderably larger, the wing from the carpal joint measuring half 
an inch more. The bill is disproportionately larger and more 
robust, exceeding that of &. minuta by as much as, or more than, 
