354 
LESTRIS RICHARD SON! I. 
larger lakes. It is generally seen in flocks, and is Very 
noisy. It breeds in marshy places. Ord’s description of 
his black-headed gull, (Wilson, vol. ix. p. 89 — present 
edition, vol. iii. p. 161,) corresponds with our spe- 
cimens, except that the conspicuous white end of the 
first quill is not noticed : the figure, (pi. 74, fig. 4.) 
differs in the primaries being entirely black.* The 
Prince of Musignano gives the totally black prima- 
ries, and a tarsus nearly two inches long, as part of 
the specific character of his L. atricilla , to which he 
refers Wilson’s bird ; though, in his Observations , he 
states, that the adult specimens have the primaries, 
with the exception of the first and second, tipped with 
w hite. L. franMinii cannot be referred either to the 
L. atricilla or L. melanocephalus of M. Temminck : 
the first has a lead-coloured hood, and deep black quill 
feathers, untipped by w r hite ; and the black hood of the 
second does not descend lower on the throat than on 
the nape ; its quill feathers are also differently marked, 
and its tarsus is longer. His L. ridibundus and capis- 
trains have brown heads, and the interior of the wfings 
gray ; the latter has also a much smaller bill than our 
L. franMinii. ” — Richardson. 
48 . LESTRIS RICHARDSONII, SWAINS. — RICHARDSON’S JAGER. 
Genus, Lestris, Illig. — Ch. Sp. Lestris Richardsonii, sub- 
concolor, rectricibus mediis abrupt^ accuminatis. tarsis nigris 
postice asperis viginti-duas lineas longis. — Sp. Ch. Richard- 
son’s jager, whole plumage, brown ; two middle tail feathers, 
abruptly accuminated ; tarsi, black, twenty-two lines long. 
“ This specimen appears to us to be in full and mature 
plumage ; w r e cannot, therefore, view it as the youno*, 
or even as the female, of the Lestris buffonii of Boje, 
w hich w e only know from the characters assigned to 
* u Four American specimens of L. atricilla are now before me. 
It is a larger, and a totally different species. The three outer quills 
are wholly black ; the fourth tipped for about one inch, and the 
fifth for half an inch, with black ; the extreme white spot at the 
point of the five first quills is very small in some, and not seen in 
adult specimens, having these feathers worn.” — Sw. 
