210 PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM.- 



720. HALOCYPTENA MICROSOMA COUES. 



Least Petrel. 



721. PROCELLARIA PELAGICA LiXN. 



Stormy Petrel ; Mother Carey's Chicken. [645.] 



722. OCEANITES OCEANICA (Kuiil) Coues. 



"Wilson's Petrel. [644.] 



723. CYMOCHOREA LEUCORRHOA (Vieil-l.) Coues. 



Leach's Petrel. [642.] 



724. CYMOCHOREA MELANIA (Bp.) Coues. 



Black Petrel. [643.] 



725. CYMOCHOREA HOMOCHROA CoUES. 



Ashy Petrel. 



726. OCEANODROMA FURCATA (Gmel.) Bp. 



Fork-tailed Petrel. [(i40. ] 



727. OCEANODROMA HORNBYI (Gray) Bp. 



Hornby's Petrel. [641 . ] 



72«. FREGETTA GRALL.A.RIA (Vieill.) Br. 

 White-bellied Petrel. [646.] 



72U. JECHMOPHORUS OCCIDENTALIS (Lawk.) Coues. 

 Western Grebe. [704.] 



730. iBCHMOPHORUS CLARKH (Laavr.) CouES. 



Clark's Grebe. [705.] 



731. PODICBPS HOLBOLLI Reinh. 



American Red-necked Grebe. [702, 703a. "J 



732. DYTES CORNUTUS (Gm.) Kaup. 



Horned Grebe. [706.] 



[733.] DYTES AURITUS (LiXN.) KiDGW. 

 Eared Grebe. [708.] 



733 rt. DYTES AURITUS CALIFORNICUS (Lawr.) RidgW. 

 American Eared Grebe. [707.] 



734. TACHYBAPTES DOMINICUS (Linn.) Coues. 



St. Domingo Grebe. [708a.] 



735. PODILYMBUS PODICEPS (Linn.) Lawii, 



Thick-billed Grebe. [709.] 



736. COLYMBUS TORQUATUS Brunn. 



Loon. [698.] 



7.37. COLYMBUS ADAMSI Gray. 



Great White-billed Loon. 



738. COLYMBUS ARCTICUS Linn. 



Black-throated Diver. [699.] 



