| OCR Text |
Show 1875.] MR. P. L. SCLA.TER ON SOME RARE PARROTS. 59 Genus Bettongia (including all the others of the group except B. rufescens). Auditory bulla much inflated; palatine foramina as in Hypsiprymnus; ridges on premolars numerous and oblique ; head short. Genus JEpyprymnus* (including only Bettongia rufescens of Gould). Auditory bulla not inflated ; palatine foramina absent; head short; tarsus considerably longer than in the two other genera. It should be mentioned that the visceral anatomy of Mpyprymnus rufescens has not been published, and that Mr. Waterhouse divides the genus Hypsiprymnus into three subgenera corresponding exactly with the three genera here defined. M y best thanks are due both to M r . Sclater and to Dr. Gunther for the very kind way in which both these gentlemen have assisted me in m y study of this subject. EXPLANATION OP THE PLATES. PLATE VII. Lateral superior and inferior views of the skull of Borcopsis luctuosa, natural size. P L A T E VIII. View of the inferior surface of the neck of Borcopsis luctuosa, showing the median gland with four orifices situated in the hyoid region. The positions of the large parotid and small submaxillary glands are indicated by dotted lines. PLATE IX. Teeth, twice the natural size, of (figs. 1-5) Borcopsis luctuosa, (figs. 6-10) Borcopsis miilleri, and (figs. 11-15) Macropus brunii. The upper two rows represent the left upper premolar, the third and fourth rows the upper and lower third left molar, and the bottom row the incisors. 2. On some rare Parrots living in the Society's Gardens. B y P. L. S C L A T E R , M.A., Ph.D., F.R.S., Secretary to the Society. [Received January 30,1875.] (Plates X. & XI.) The determination of the Parrots in the Society's collection, aided by Dr. Finsch's excellent Monograph, I do not usually find a difficult task. But several of the more recent accessions have caused m e some little trouble, and rendered investigations necessary, concerning the results of which, I think, a few notes may be acceptable to naturalists. In the Society's 'Proceedings' for 1871 (p. 490 et seqqi) I distinguished a new species of white Cockatoo from a specimen living in the Gardens as Cacatua gymnopis\, and took occasion to point out the differences between it and its two allies Cacatua ducorpsi and C. sanguinea, of which living examples were also then in the collection. * This term I propose for Mr. Waterhouse's first section of Hypsiprymnus, which he has left without any Latin name. t The type of this species is still alive in the Gardens; and we have also a second specimen, purchased Feb. 15, 1872. |
