1895.] LOEirS FLATOPALLIATTJS AKD PSITTACUS EEITHACUS. 337 



corresponding with the dorsal margins of the eoracoid grooves. 

 From their median junction a less strongly marked ridge runs a 

 short distance poetaxiad, a mai'ked fossa existing on either side of 

 it and behind the transverse prominences. Numerous small fora- 

 mina open round the margins of these fossae and thence back- 

 wards over a considerable part of the internal surface of the 

 sternum. In both species the pleurosteon has six excavations 

 divided by five septa, each of which bears two superimposed 

 convexities for one of the sternal ribs. 



In L. Jlavoj>alliatus the manubrium, when laterally viewed, 

 appears less elongated and less pointed towards its apex. Its 

 anterior surface presents a rounded cup, in the place of au elongated 

 groove, but the tendency to lateral bifurcation is rather more 

 marked. The anterior margin, below the anterior cup, ie convex 

 preaxiad. 



The internal surface of the sternum has only faint lateral ridges 

 coinciding with the dorsal margins of the eoracoid grooves, and 

 there is no postaxiad median ridge, but in its place a large foi'amen 

 leading into the substance of the bone. 



Contents {Mntinued). 



April 2, 1895. 



Page 

 The Acting Secretarj'. Report on the Additions to the Society's Menogerie in March 1895 . . 273 



The Acting Secretary, on behalf of Lord Lilford. Exhibition of, and remarks upon, a 



specimen of the American Wigeon (Mareea americana) 273 



Mr. Boulenger. Exhibition of, and remarks upon, specimens of two recently discovered 

 Chameleons, from Usambara, German East Africa 273 



1. On the Sensory Canal System of Fishes. Teleostei. — Suborder A. Physostomi. By 

 Walter Edward Collingb, F.Z.S., Assistant l/ccturer and Demonstrator in Zoology and 

 Comparative Anatomy, Mason College, Birmingham. (Plates XVIII.-XXI.) 274 



•J. Remarks on some Cranial Characters of the Salmonoids. By G. A. Boulenoer, E.R.S. 299 



3. On certain Features in the Skull of Osteoglossum formosum. By Prof. T. W. Bridge, 



M.A. (Plate XXII.) 303 



4. Notes on several rare Palaarctic Birds. By H. E. Dressee, F.L.S., F.Z.S 311 



5. The Skeleton of Lorius flavopaUiatus compared with that of Psittacus eritkacus. — Part I. 



By St. George Mivart, P.E.S 312 



