As a further illustration of the last plate, I have been induced to figure this very rare variety, from a specimen I met with at Mrs. Mawe's. In the disposition of its markings, it approaches near to the shell represented in the _Ency. Meth._ _plate_ 325, _f._ 6, but the white band in the middle is narrower, and quite destitute of the circular dotted lines there expressed. No shells require a greater accuracy of delineation than the Cones, particularly in expressing the peculiarity in the form and sculpture of their spires. I am well persuaded that a great number of the mistakes committed by authors have originated in the wretched figures contained in Favanne's work, and in the early volumes of Martini. Those of Favanne are generally so loose and inaccurate, (although remarkably well engraved,) that I do not wish, by quoting, to make them any authority; and most of the Cones figured by Martini are equally bad. Bruguiere and Lamarck have both given the character of _spira canaliculata_ to this species, which is altogether a mistake. The spiral whorls are all _but_ perfectly flat, and the suture is quite closed up, although sometimes uneven; originating, as in many other shells, either from the inequalities of growth, or from an accidental sea-break, which the animal may have repaired. * * * * * Pl. 129 [Illustration] MELLIPHAGA torquata, _White-collared Honeysucker._ * * * * * GENERIC CHARACTER.--See Pl. 43. * * * * * SPECIFIC CHARACTER. _M. olivaceo-fulva, infra alba; capite auribusque nigris; torque nuchali lunato, albo; superciliorum cute rubra._ Fulvous olive, beneath white; head and ears black; nape with a white crescent, skin of the eyebrows red. Black-crowned Honeysucker. _Lewin's Birds of N. Holland_, _pl._ 24. * * * * * An elegant, though not a richly coloured bird; remarkable for the bright red of the skin above the eyes, and the milk-white collar at the back of the head. It is from New Holland, and, like others of its tribe, derives its nourishment chiefly from the nectar of flowers; as more particularly mentioned in my first observations on this genus at pl. 43. The figure is of the natural size: excepting the crown and sides of the head (which are deep black), the whole upper plumage is olive yellow: the shoulders, quills, and tail brown; the two latter margined with olive, but the exterior quills with white: the throat, breast, and collar round the nape pure white; skin of the eyebrows red.