These shells inhabit chiefly the South American Seas; the true Cedo nulli, as it is called, has been found at Grenada. Some of the varieties of Conus Ammiralis, are not very uncommon, and are in infinitely less esteem than others; for, as it has already appeared, it is in proportion to their rarity in addition to some peculiarity in the colours and markings, and most especially in their disposition into the form of bands, that taste and fancy has affixed a value so considerable as that which these shells are sometimes known to bear. ----- Footnote 1: (Adamas.) “Proximum apud nos Indicis Arabicisque margaritis pretium est, de quibus in nono diximus volumine inter res marinas.” _Plin. Hist. Nat. lib 37. cap. 4._ Footnote 2: Vide _Annales du Museum National_. _An._ xi. (1802) _Premier Cahier_. Footnote 3: Le Cedo Nulli à bandes, ou dont la robe jaunâtre se partage en quatre bandes, l’inférieure et celle du milieu sont comparties de marbrures blanches, les deux autres sont remplies, l’une de quatre cordelettes à point blancs, la seconde de trois seulement. _Tom._ 1, p. 442. ------------------------------------------------------------------------ [Illustration: 2 _London. Published by E. Donovan & Simpkin & Marshall. April 1.^{st} 1822._ ] ------------------------------------------------------------------------ ORNITHOLOGY. PLATE II. TROGON VIRIDIS. YELLOW-BELLIED GREEN TROGON, OR CURUCUI. ORDER PICÆ. GENERIC CHARACTER. Bill shorter than the head, sharp edged, hooked margin of the mandibles serrated: feet scansorial or formed for climbing. SPECIFIC CHARACTER AND SYNONYMS. Green gold, beneath luteous; chin black; on the breast a green gold band. TROGON VIRIDIS: viridi-aureus, subtus luteis, gula nigra, fascia pectorali viridi-aurea. _Gmel. Linn. Syst. Nat. 2. 404. n. 3._ TROGON VIRIDIS, _Linn. Syst. Nat. edit. 12. 1. p. 167. 3._ Trogon Cayanensis viridis. _Briss. av. 4. p. 168. n. 2 t. 17._ Couroucou à ventre jaune. _Buff. Ois. 6. p. 291. Pl. Enl. 195._ TROGON VIRIDIS: viridi-aureus subtus luteis, gula nigra, retricibus utrinque tribus extimis oblique et dentatim albis. _Lath. Ind. Orn. t. 1. p. 199. 2._ Yellow-bellied Curucui. _Lath. Gen. Syn. 2. p. 488. 2._ * * * * * This curious and very elegant bird is about twelve inches in length; the bill an inch long and of a pale cinereous or ashen hue, and, like most other species of this remarkable genus, serrated along the margin. The legs are feathered to the toes, and with the toes and claws are of a pale brown.