62 iVIr. J. Gould on a supposed neiv Species of Pigeon. 



EXPLANATION OF PLATES IL & IIL 

 Plate II. 



Fi(/. 1. Somewhat enlarged view of a central vertical row of teeth of 

 Janassa bituniinosa, seen in profile and exhibiting transverse 

 grooves and ridges on the underside : a, under surface, with 

 transverse grooves, of apparently two lateral teeth ; b, a portion 

 of a second lateral tooth. 



Fiff. 2. Horizontal row of teeth of the same, a little enlarged : a, anterior 

 scoop-like cutting-margin ; b, crushing-disk ; c, root ; d, first 

 lateral tooth ; e, second ditto ; /, flauliing petalodontoid tooth. 



Fiff. 3. Diagi-am showing the central vertical row of teeth in profile, and 

 to explain their relationship to the jaws : «, supposed upper jaw ; 

 b, supposed under jaw ; c, the teeth in use ; d, effete supporting 

 teeth. 



Fig, 4. Profile view of a central tooth, somewhat enlarged : a, anterior 

 scoop-like cutting-margin ; b, crushing-disk ; c, root. 



Ftff. 5. View of underside of central tooth : a, cutting-margin ; b, central 

 area or facet, exhibiting transverse grooves ; c c, lateral facets ; 

 d, root. 



Fiff, 6. Shagreen, tubercles much enlarged, in their natural order. 



Fiff. 7, Three stellate tubercles of the same. 



Fiff, 8. Two smooth tubercles. 



Plate UI. 



Fiff. 1. A group of teeth, a little over the natural size, of Jatiassa bitumi- 

 nosa, seen in front, the anterior cutting-margins being exposed : 

 a, central row of teeth of upper jaw ; 6, of under jaw, with their 

 sides exposed; c, petalodontoid teeth ; d, shagreen. 



Fiff. 2. Another group : a, the upper surface of two teeth of the upper 

 jaw ; b, the remains of teeth of the under jaw, with their under 

 surfaces exposed ; c, scattered petalodontoid teeth, with their 

 imdersides uppermost. 



IX. — Description of a supposed neiv Species of Pigeon. 

 By JToHN Gould, F.K.S. 



Genus Otidiphaps, Gould. 



Size large, equalling that of a wood-pigeon, CoJumha cenas ; 

 hill longer than the head, straight, and plover-like ; wings 

 short and round, armed with a spur at the shoulder ; tail 

 round and moderately long ; tarsi very long for a pigeon, and 

 with the toes covered with thick plate-like scales ; nails some- 

 what straight and pointed ; general structure adapted for the 

 ground rather than for trees or for flight. 



Otidipjliaps nohilis^ Gould, 



Bill red or fleshy red, particularly on its basal portion ; round 

 the eye a bare space, Avhich appears to have been of the same 

 colour ; crown of the head and occipital crest black, Avith steel- 

 blue reflections ; back of the neck resplendent glaucous green ; 



