114 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



Having carefully gone over the descriptions and measurements 

 of all the New Zealand species, and compared it with various 

 kinds from other parts of the world, I have come to the conclu- 

 sion that it has not been hitherto described, and therefore propose 

 for it the name of Bruchigavia longirostris. 



The adult has the head, neck, shoulders, rump, tail, and all the 

 under surface white ; back and wings, silvery grey ; the shaft of 

 the first primary white at the base, black for the next three 

 inches, then white for about two inches, and tipped with black ; 

 the second is marked somewhat in the same way, but the white 

 extends much farther from the base ; in the third the white 

 extends to within about an inch of the tip ; the web of the first 

 primary is black for about two-thirds of its distance from the 

 base, where it is interrupted by a large elongate spot of white, 

 not quite reaching to the inner margin; of the second white at the 

 base, and having the large white spot near the tip similar to the 

 first ; the third is without the white spot (that colour extending 

 from the base to within about an inch from the tip), internally 

 margined with black, and slightly tipped with white ; 

 secondaries white externally and crossed near the tip with a band 

 of black, which extends along the inner margin, tips of the two 

 first white, the others light grey ; scapularies silvery grey ; 

 spurious wing white ; eyelash black ; bill black, with a very 

 slight tinge of red at the base ; legs and feet blackish, intermixed 

 with a reddish or brown tint. 



In the young or immature specimen the shoulders are mottled 

 with brown and the tail is crossed by a distinct band of blackish 

 brown near the tip. 



Total length 16| inches, wing 11'8 inches, from eye to tip of 

 bill 2 1- inches, from gape to tip of bill 2'3 inches, bill from fore- 

 head 2*1 inches, greatest depth of bill 0"46 inch, bill from ante- 

 rior margin of nostril - 8 inch, tarsi 2T inches, middle toe 

 without nail 1*5 inches, hind toe without nail 0'3. 



The measurements of B. Jamesonii are given to show the 

 great difference that exists between the two species. B. Gouldii 

 from Torres Straits is so much like B. Jamesonii, that a compa- 

 rison with that species is not necessary. 



