—James.

[18] Genus Sciurus, L.—S. lateralis, Say.—Above brownish cinereous intermixed with blackish; on each side of the back a dull yellowish-white dilated line, broader before, margined above and beneath with black, originating upon the neck anterior to the humerus, and not attaining the origin of the tail; no appearance of a vertebral line; thigh, neck anterior to the tip of the white line, and top of the head tinged with ferruginous; orbits whitish; tail short, thin, with a submarginal black line beneath; nails of the anterior feet elongated: thumb tubercle furnished with a broad nail; sides dull yellowish-white; beneath pale, intermixed with blackish.—James.

[19] Étienne Geoffroy Saint-Hilaire (1772-1844) began the collection of animals for the Jardin des Plantes, and after 1794 was the collaborator of Cuvier. He was a prolific writer, and previous to Long's expedition had prepared a Catalogue des Mammifères du Muséum national d'Histoire naturelle (1813).—Ed.

[20] Hirundo lunifrons, Say.—Above brownish-black, more or less varied with violaceous on the back and wing-coverts; top of the head exclusively blackish-violaceous, a large white frontal lunule; bill black; rump and tail coverts pale ferruginous; chin, throat, and neck beneath, dark ferruginous extending in a narrow band upon the hind head; breast pale rufous ash; axillæ and inferior wing coverts dirty brownish; shoulders dull whitish, with small black and pale ferruginous spots; belly and vent flanks white, obsoletely dashed with brown; inferior tail coverts dusky, margined with white; tail entire, not surpassing the tips of the wings, the exterior feather margined with white on the inner web; wing and tail-shafts brown above, white beneath; the tail feathers in some lights have a slightly-banded appearance. Length 5½ inches.—James.

[21] Genus Coluber.—C. testaceus, Say.—Pale sanguineous, or testaceous above, beneath sanguineous immaculate. Pl. 198. Sc. 80?

This is a large species equal in size to the C. constrictor. It moves with great rapidity, and in general form and size it resembles C. constrictor. The scales are large. A specimen is in the Philadelphia Museum.—James.

[22] Emberiza amœna, Say.—Head and neck bluish green; back brownish black more or less intermixed with blue and a little brown ferruginous; rump pure blue; smaller wing coverts dull blue, brown at base, and tipped with white, forming a band; greater wing coverts blackish, tipped with white, forming a narrow band; wing and tail feathers blackish-brown with blue exterior margins; belly, inferior tail coverts and lower part of the breast white; superior portion of the breast pale ferruginous; neck bright green; bill and feet pale.—James.

[23] Genus Crotalus, Lin.—C. confluentus, Say.—Brownish, varied with greenish-yellow, a triple series of brown spots, the anterior vertebral ones confluent, and the posterior ones separated into bands.

Body brownish cinereous, varied with greenish yellow; a triple series of fuscous spots; dorsal series consisting of about forty-four large transversely oblong oval spots, each widely emarginate before and behind, and, excepting the posterior ones, edged with greenish-white, the ten or twelve anterior ones, crowded and confluent, those of the thicker part of the body separate, those near the cloaca and upon the tail united with the spots of the lateral series, and forming bands; lateral series, spots rounded, opposite to those of the back; between the dorsal and lateral series is a series of obsolete, fuliginous spots, alternating with those of the two other series; head above scaly, scales of the superior orbits, and of the anterior margin, larger and striated; beneath yellowish-white, immaculate. Plates of the body 179; of the tail 27.—James.

[24] Louis Augustin Guillaume Bosc (1759-1828) visited the United States in 1796; later he taught at the Versailles Zoölogical Garden. It is uncertain as to which particular work is here referred to.