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Show 96 MR. G. A. BOULENGER ON NEAV [Feb. 7, which does not appear to be mentioned by Gadow; that is, a bundle (z) which passes from the hinder part of the membrana tympaniformis interna to the oesophagus. I cannot distinguish a " bron-chiodesmus," unless this is some modification of it. The only muscle on the outer surface of the syrinx is the " tracheo-bronchialis," which is attached to the ring d. Fig. 6. The syrinx of Notornis, from the left side (X 8). e.t., membrana tympaniformis externa. Other letters as in fig. 4. A comparison of the syrinx Avith the figures given by Gadow in Bronn's ' Thierreich,' as well as with those described from time to time by Beddard, shows that in this particular Notornis is very peculiar. 5. Descriptions of two new Lizards from the Interior of British East Africa. By Gr. A. B O U L E N G E R , F.R.S. [Beceived January 6, 1899.] (Plate X.) L A C E R T A JACKSONI. (Plate X.) Head rather long, much depressed. Rostral not entering the nostril; a single postnasal; four upper labials anterior to the subocular ; a series of granules betAveen the supraoculars and the supraciliaries; occipital moderate, a little shorter than the inter- |