PROCELLARIA MACROPTERA.— Smith. 



AvES.— Plate LII. 



P. obscure rubro-brunnea ; rostro nigro ; pedibus brunneis. 

 LoNGlTUDO ab apice rostri ad basin cauda; 1 1 unc. C lin. ; caudw 6 unc. 



Colour. — Tlie whole plumage intermediate between brownish red and 

 liver-brown ; several of the scapulars and interscapulars narrowly tipped with 

 yellowish brown. The feathers of the head, neck, and body silvery white 

 towards their base, with a satin lustre. Bill rich black. Tarsi, toes, and 

 interdigital membranes liver-brown, the two first tinted with lake-red. 



Form, &c. — Figure moderately stout, and not quite so rounded as that of 

 the last species. Head of moderate size, and slightly tapering towards the 

 vertex ; bill robust, and strongly compressed, particularly towards the point, 

 the sides of the upper mandible slightly convex, and distinctly separated on 

 each side from the culmen, by a deep longitudinal groove, which commences 

 at the anterior extremity of the nasal tube, and terminates at the commissure 

 about opposite to the point where the edge of the lower mandible begins to curve 

 downwards. The hook of the upper mandible forms fully half the length of 

 the bill, its base beino- within a small distance of the termination of the nasal 

 tube ; it is much curved, and its point descends considerably below the lower 

 mandible ; posteriorly its upper edge projects above the level of the nasal 

 tube ; the latter is rounded superiorly, or somewhat bluntly carinated, and 

 anteriorly presents only a single opening. The lower mandible is marked on 

 each side with a distinct longitudinal groove, which commences at its base, 

 and terminates where the cutting edge begins to curve downwards ; the 

 point of the mandible is acute, and slightly prolonged. Tarsi moderately 

 robust, and covered with small, flat, irregular shaped scales ; toes rather slen- 

 der ; interdigital membraneslarge, and their anterior edges superiorly delicately 

 plaited. Claws slightly curved and pointed ; a slender somewhat cylindrical 

 claw in the place of the hinder toe. Wings long, and exceed by an inch and 



