DESCRIPTION AND TECHNICAL OBSERVATIONS.

Genus Lophophanes. Kaup Skiz. Entw. Eur. Thierw. (1829.)

Lophophanes atricristatus. (Cassin.)

Parus atricristatus. Cassin. Proc. Acad. Philada. Vol. V., p. 103,

(Oct. 1850.)

Form. With a high pointed crest, bill rather strong and acute. Wings

long, with the fourth and fifth primaries longest, and nearly equal;

tail rather long.

Dimensions of a skin from Quihi, Texas. Total length, from tip of bill

to end of tail, about 6 inches; wing 3; tail 2¾ inches.

Colors. Male. Crest, black; body, wings and tail above, cinereous;

darker on the latter, and with an olivacious tinge on the back. Front

and inferior surface of the body, ashy white; flanks, ferruginous.

Shafts of primaries, reddish at their bases; those of the tail feathers

white beneath; bill and legs black. Young male with the crest cinereous,

shaded with light brown.

Female. Similar to the male, but slightly smaller, and with the crest

cinereous.

Hab. Texas. Spec. in Mus. Acad. Philada.

Obs. This species is of the same general form and color as _Lophophanes

bicolor_, (Linn.,) and _Lophophanes inornatus_. (Gambel.) It is about

the size of the former, and larger than the latter, and may be readily

distinguished from either of those or from any other species known to

me, by its black crest.

Having access to specimens of all the known North American species of

this family, in the collection of the Academy of Natural Sciences of

Philadelphia, we beg the liberty of laying before our readers a synopsis

of these birds, with short descriptions, and of availing ourselves also

of the present occasion to express our grateful acknowledgments for the

facilities and privileges generously allowed us by the gentlemen of the

Academy.

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