55 



720. HALOCYPTENA MICROSOMA Coues. 



Least Petrel. 



721. PROCELLARIA PELAGICA Linn. 



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



722. OCEANITES OCEANICA (Kuhl) Coues. 



"Wilson's Petrel. [644.] 



723. CYMOCHOREA LETJCORRHOA (Vieill.) Coues. 



Leach's PetreL [642.] 



724. CYMOCHOREA MEL.aE!NA (Bp.) Coues. 



Black Petrel. [643.] 



725. CYMOCHOREA HOMOCHROA Coues. 



Ashy PetreL 



726. OCEANODROMA FTJRCATA (Gmel.) Bp. 



Pork-tailed Petrel. [640.] 



727. OCEANODROMA HORNBYI (Gray) Bp. 



Hornby's PetreL [641.] 



728. PREGETTA GRALLARIA (Vieill.) Bp. 



■White-bellied Petrel. [646. ] 



729. .33CHMOPHORTJS OCCIDENTALIS (Lawe.) Coues. 



Western Grebe. [704.] 



730. .ffiCHMOPHORTTS CLARKI (Lawr.) Coues. O 



Clark's Grebe. [705.] 



731. PODICEPS HOLBOLLI Eeinh. -«•**- <**■ ~->-t- «-<JU^ «^ ^^^/ 



American Red-necked Grebe. £702, 703a.] 



732. DYTES ATJRITUS (Linn.) Eidgw. 



Horned Grebe. [706.] 



£733.] DYTES NIGRICOLLIS (Sund.) Eldg-w. 

 Eared Grebe. [708.] 



733o. DYTES NIGRICOLLIS CALIFORNICTJS (Heekm.) Eidgw. 

 American Eared Grebe. [707.] 



734. TACHYBAPTES DOMINICUS (Link.) Coues. 



St. Domingo Grebe. [708 a.] 



735. PODHiYMBTJS PODICEPS (Linn.) Laws. 



Thick-billed Grebe. [709.] 



736. COLYMBTJS TORQTJATUS BRUNN V 



Loon. [698.] 



737. COLYMBTJS ADAMSI Gkay. 



Great White-billed Loon. 



738. COLYMBUS ARCTICTJS Linn. , 



Black-throated Diver. [699.] 



