354 
LESTRIS RICHARDSONII. 
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 onr 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 
white. L. franklinii cannot he 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 white ; 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- 
tratus have brown heads, and the interior of the wings 
gray ; the latter has also a much smaller bill than our 
L, franklinii. ” — Richardson. 
48. LESTltlS RJCHAKDSONTI, SWAINS.. — . RIC’IIA R DSON’s JAGER. 
Genus, Lestris, llliff. — Cn. Sr. Lestris Richardsonii, sub- 
concolor, rcctricibus mediis abrupt,! accuminatis, tarsis nigris 
postici asperis viginti-duas lineas longis Sr. Ch. Richard- 
son’s jager, whole plumage, blown ; two middle tail feathers, 
abruptly accumulated ; tarsi, black,- twenty-two lines long. 
“ This specimen appears to us to be in full and mature 
plumage : we cannot, therefore, view it as the young, 
or even as the female, of the Lestris bvjfonii of Boje, 
which we only know from the characters assigned to 
* “ Four American specimens of L. atricilla are now before me- 
lt is a larger, and a totally different species. The three outer quill 9 
are wholly black ; the fourth tipped for about one inch, and the 
filth lor 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 ia 
adult specimens, having these feathers worn.” — Sw. 
