PROCELLAEIID^ — THE PETRELS — CYMOCHOREA. 



407 



B. No white on the rump. 



;3. C. melania. Uiiifonn fuliginous-du.sky, ligliter and lirowner beneath, the greater wing- 

 coverts and outer webs of tertials liglit grayish brown. Wing, 0.80 inches ; tail, 3.90, 

 forked for 1.20; culmen, .60 ; tarsus, 1.20 ; middle toe, 1.00 Hah. South Pacific Ocean, 

 nortli to Lower California. 

 4. C. homochroa. Smoky plumbeous, the wing-coverts lighter and more tjrown, remiges 

 and tail dusky, rump and upper tail-coverts ashy plumljeous. Wing, 5.30-5.40 inches ; 

 tail, 3.30-3.50, forked for .70-.90 ; culmen, .50-.55 ; tarsus, .80-.90 ; middle toe, .75-80. 

 Hab. Farallone Islands, coast of California. 



C. leucorhoa. 



C. melania. 



C. hoviochroa. 



Cymochorea leucorhoa. 



LEACH'S PETREL. 



Procellaria leucorhoa, Vieill. Nouv. Diet. XXV. 1817, 422. 



Cymochorea Icucorrhoa, Coues, Pr. Ac. Nat. Sci. Philad. 1864, 76 ; Key, 1872, 329 ; Check List, 

 1873, no. 588 ; ed. 2, 1882, no. 823. — Eidgw. Norn. N. Am. B. 1881, no. 723. 



Procellaria Leachii, Temm. Man. II. 1820, 812. 



Thalassidroma Leachii, Bonap. Synop. 1828, no. 309; Consp. II. 1856, 193. — Nl'tt. Man. II. 

 1834, 326. — AuD. Orn. Biog. III. 1835, 424 ; B. Am. VII. 1844, 219, pi. 459. — Lawuenxe, 

 in Baird's B. N. Am. 1858, 830. — Baird, Cat. N. Am. B. 1859, no. 642. 



Procellaria Bullockii, Flemino, Brit. An. 1828, 136, no. 219. 



Hab. North Atlantic and Pacific oceans, south to Virginia (Petersburg, Va., and Potomac 

 River, near Washington, D. C. !), and Aleutian Islands ; breeds from the coast of Maine northward. 



