434 PUFFINID.E. 
made of green grass and other vegetation, and on a second exploration of the tunnels 
Mr. Anthony found that a further extension of one or two feet had been made 
by the birds previously disturbed by him, and that the nest had been transferred to 
the newly excavated burrows. He describes the flight of this Shearwater as much 
more airy and graceful than that of any other species known to him ®, 
The eggs are white and the shell is smooth ®. 
2, Puffinus auricularis. 
Puffinus auricularis, Townsend, Pr. U. S. Nat. Mus. xiii. p. 183 1, Salvin, Cat. Birds Brit. Mus. 
xxv. p. 8807; Anthony, Auk, xv. pp. 313°, 316‘, 317°; Xvil. p. 249°. © 
P, opisthomelani* similis, sed saturatior ; hypochondriis imié nigricantibus ; axillaribus albis, apicem versus 
nigricantibus ; corpore subtus toto pure albo; regione suboculari et gutturis lateribus nigro maculatis. 
Long. tota circa 13°5, ale 9-2, caude 3°15, culm. 1°35, tarsi 1°7. (Descr. maris adulti ex Clarion I. 
Mus. Rothschild.) 
Hab. LowEr Cauirornia, Cape San Lucas®; RevILLaGiGEDO Is., Clarion I.15°% San 
Benedicto I. 3 6, Socorro I. 4. | 
This species was discovered on Clarion Island by Mr. C. H. Townsend in March 
18891. He describes it as not unlike P. opisthomelas, but with a smaller bill and 
feet. The colours of the upper parts are darker, nearly black, with the black of the 
head extending below the eye to the angle of the mouth, and that of the wing well 
over the edge of the latter to the under surface; the sides of the neck mottled by the 
gradual blending of white and black. 
* Puffinus opisthomelas. 
Puffinus opisthomelas, Coues, Pr. Acad. Philad. 1864, pp. 139", 1442; Salvin, Cat. Birds Brit. Mus. xxv. p. 380 °; 
Anthony, Auk, xvii. p. 2474; Oates, Cat. Eggs Brit. Mus. i, p. 154°. 
Puffinus gavia (nec Forster), Ridgway, Pr. U. 8. Nat. Mus. iii. pp. 12°, 2307; Baird, Brewer, & Ridgway, 
Water-Birds N. Amer. ii. p. 389°; A. O. U. Check-l. N. Amer. Birds, 2nd ed. p. 32°, 
9. Supra fuliginoso-niger ; dorso postico et uropygio, supracaudalibus cum alis caudaque paullulum nigrican- 
tioribus; corpore subtus pure albo; loris, facie laterali et regione parotica fuliginosis, vix albido 
marmoratis ; genis et colli prapectorisque lateribus cinerco irroratis, plumis singulis cinereo marginatis ; 
pectoris summi lateribus et hypochondriis imis brunneis; subcaudalibus fuliginoso-brunneis, imis ad 
basin albis; subalaribus albis, tectricibus primariorum extus brunneis; axillaribus albis, ad apicem 
fuliginoso-brunneis, albo terminatim fasciatis ; remigibus infra fuliginosis, intus paullo cinerascentibus ; 
culmine et regione nasali nigris: rostro laterali flavescente vel rufescenti-brunneo, ungue ce#rulescenti- 
albo; pedibus et palmis flavicanti-carneis, digito externo nigro; tarso externo partim nigro. Long. tota 
circa 14:0, ale 8-8, caude 3:2, culm. 1:45, tarsi 1°75. (Descr. femine adulte ex Playa Maria Point. 
_» Mus. nostr.) , 
¢ haud a femina distinguendus, sed major. Long. tota circa 15:5, ale 9:5. (Descr. maris ex Santa Cruz, 
California. Mus. nostr.) 
Hab. Coasr or Centrat anp Lower Cattrornta*‘®, probably extending north to the Columbia River *, 
Guadalupe I., San Benito I., and Natividad I. (Anthony *). 
Mr. Anthony, who has given an interesting account of this species in the ‘ Auk ’ for 1900 4, found it breeding on 
Guadalupe, and also on the San Benito Islands. He likewise met with this Shearwater in April, 1897, nesting 
