This curious bird is nearly allied to _Psittacus Squammosus_, the _Scaly Breasted Parrakeet_, and in no very remote degree with another kind of Parrakeet, the _Wavy Breasted Parrot_, _Psittacus Lineatus_. The first of these our bird exceeds by at least an inch in length, the other by an inch and a quarter. Instead of the dark colours of the head, as in our bird, the head and neck of P. Squammosus are dull orange. The darker colouring of our bird assimilates more nearly with _Psittacus Lineatus_, but in other respects is entirely different. We have considered it as a new species, at the same time that it must be observed from the very close analogy that prevails between this bird and the Scaly Breasted Parrakeet, it may possibly prove hereafter to be the adult bird of that kind rather than a distinct species. ------------------------------------------------------------------------ [Illustration: _34_ _London. Published by E. Donovan & Mess.^{rs} Simpkin & Marshall, March 1, 1823._ ] ------------------------------------------------------------------------ CONCHOLOGY. PLATE XXXIV. TEREBRATULA SANGUINEA SANGUINEOUS LAMP-ANOMIA, TEREBRATULA, OR, LAMP COCKLE. BIVALVE. GENERIC CHARACTER. Shell inequivalve regular, somewhat triagonal: upper valve imperforate, lower valve beaked above the hinge, the beak usually incurvate, perforated at the tip, or grooved, for the passage of a short tendinous pedicle, by means of which it adheres to other bodies: Hinge with two teeth, and furnished with two osseous elevated and furcated processes arising from the disk of the upper or smaller valve, destined to support the animal. SPECIFIC CHARACTER AND SYNONYMS. Shell red, ventricose, suborbicular, longitudinally ribbed: upper valve depressed in the middle; the lower with the back elevated. TEREBRATULA SANGUINEA: testa rubrâ ventricosa, suborbiculata, longitudinaliter costata: valva superiore in medio excavato: inferiore dorso elevato, apice incurvato perforato. ANOMIA SANGUINEA. Obovata longitudinaliter sulcata, triloba; sinu profundo, nate producta latere angulata foramen ambiente. _Solanders MSS.—Hab. in O. Pacifico. G. R. Forster._ ANOMIA SANGUINEA. _Portland Catalogue._ ANOMIA SANGUINEA. _Leverian Cat. sec. part. p. 15._ ANOMIA SANGUINEA. _Dillwyn’s Conch. 1. 293. 21._ TEREBRATULA SANGUINEA. _Leach. Zool. Misc. t. 76._ TEREBRATULA SANGUINEA. _Lamarck Anim. sans. Vert. T. 6. p. 1. p. 243._ Lampas Sanguineus, La Sanguinolente (Anomia Sanguinea S.) _Calonne Cat. Humph. MS._ * * * * *