Remarks. Length four inches; vulgar name little sucker. For further particulars, see Lesueur's description, p. 85. cum. ic. I have been obliged to change the specific name of maxillingua, since it has the same meaning as the generic name.
2. Species. Exoglossum annulatum, Raf. Head black above, cheeks and gills olivaceous, back blackish olive, sides olivaceous, lower parts olive gray; a black ring at the base of the tail; lateral line ascending upwards at the base, tail forked, dorsal and anal fins with nine rays.
Remarks. Length from three to six inches; vulgar name, Black chub. Head broad and flat above, iris large and gray; fins olivaceous, abdominal distant and with nine rays, pectoral with fifteen, caudal with twenty-four.
PHYSICS, MECHANICS, AND CHEMISTRY.
Art. XV. On the Revolving Steam-Engine.
Art. XV. On the Revolving Steam-Engine, recently invented by Samuel Morey, and Patented to him on the 14th July, 1815, with four Engravings.