rROCELLARIID.E — THE PETRELS — PUFFINUS. 



389 



I Eock ; 

 Captain 

 ins Orile 

 ig, were 

 locies is 

 luitation 

 00. Mr. 

 k, at tlio 

 ecies and 

 lie spi'ci- 



old oni'S 

 cd lilack 



captured 

 the other 

 lemselves 

 ■ith bhiek 

 ze of that 



le Gulf of 

 ecies were 

 ber, and in 

 en sail lor 

 their long 

 jf seawoi'd 

 lear to run 

 nth all the 

 V specimen 

 ith iish of 

 lialf inches 

 li as Sandy 

 sionally as 



iigular bird 

 hieh bred 

 abundant, 

 iiel and not 

 tirst met 

 ady begun 

 vys placed 

 I foot from 

 rd made no 

 ble that ol 

 eggs were 

 a good deal 

 ree of tlunu 

 04 by l.oO . 



rht by thosi' 

 ding. Ui"- 

 ght of laud. 



They did not fly round much, but remained quiet on the surface of the water. Dr. 

 lUyant did not sec one of them on the banks ; and his observations were in conflict 

 with those of Audubon, as he never saw them dive, or apparently catch any flsli, 

 tliough they were often in comjiany with Boobies and different species of Terns, all of 

 which were actively employed in Ashing. Hetween Andros and the Bank he saw 

 on the, 2Gth of April a largo flock of this species covering tiie surface of the water, or 

 liovering iver it, for an extent of a square mile. Their number nmst have been ent)r- 

 mous. In the stomachs of all those he examined — nine in number — he found a 

 mass largely composed of the scales of small fish and the mandibles of squids and 

 cuttle-fish. 



Four eggs of this species (Smithsonian Institution, No. 1714), obtained by Dr. 

 Ihyant, are of a clear chalky-white color, exactly oval in shape, and have the follow- 

 ing measurements: li.lO by 1,45 inches; 2.05 by 1.40; 2.00 by 1.40; 2.00 by 1.40. 



Fu£Bnus gavia. 



THE BLACK-VENTED SHEARWATEB- 



ProccUaria gavin, FoRsr. Dcscr. Aiiiiii. 1844, 148. — lIuTTOX, Ibis, 1872, 84. 

 jEntrchita (javia, ViU.u & Sai.vad. lliis, ISO!), 0(5. 

 Cookihiria gavin, (iliAV, Ilamll. III. 1871, 107. 



Piijjinm gavia, FiNscii, J. f. 0. 1872, 250. — ninow. Noni. N. Am. B. 1881, no. 713. 

 Piijliiiiis opislhomelas, Cox'i'.s, Pr. Ac. Nat. Sii. Pliiliiil. April, 1804, 139 (Cape St. Lucas); Key, 

 1872, 331 ; ('licuk List, 1873, no. GOl ; eiL 2, 1882, no. 830. 



Had Const of Lower ridiforiiia (Cape St. Lucas), and across the Pacific to Now Zealand. 



.Se. Char. Adult: Al)ove, unii'orm I'uligiiioiis-dusky, the feathers witliout distinct ligiiter 

 terminal margins ; hiwer parts, inchiding entire under surface of tiie wings, wiiite, the sides of tiie 

 neck and suborbital region faintly and indistinctly undulated with dusky grayisli ; crissuni and 



posterior portion of the flanks grayish fuliginous. Bill brownish (nuieh like the color of the back), 

 the unguis and lower edge of both mandibles paler ; iris dark brown ; legs and feet pale colored in 

 the dried skin, the outer side of the tarsus and outer toe dusky. 



Total length, 12.25 to 15.00 inches; e.xtent, about 26.00 to 32.00 ; wing, 9.00 ; culmen, 1.30- 

 1.10 ; depth of bill through base, .35 ; tarsus, 1.75 ; middle toe, 1.70-1.75.1 



> Captain F. W. Hutton (in the "Ibis," January, 1872, p. 84), gives the average measurements of New 

 Zealand specimens as follows ; — 



" E.\pftnse, 26 j length, 12i to 13J ; bill along culmen, IJ, to gap, 2 ; tail, 3.6 to 2.75." 



