APPENDIX TO CHECK LIST. 133 



Nos. 343, 344. The dark northwest coast forms of cluck hawk and 

 pigeon hawk respectively have been named (Bull. Ess, lust., v, 201) 

 as follows : — 



343a. PALCO COMMUNIS Gm., 

 var. PEALEi Eidg. 

 Peale's Iducli Ka^k. 



344a. PALCO COLUMBARIUS L., 

 var. sucKLEYi liidg. 

 JiJiicltley's Pig-eon Ha^tk. 



No. 351c. The authority is Hoopes, Pr. Phila. Acad., 1873, 238, pi. 

 5 (Iowa). 



No. 381. A dark form of Tetrao obscurus, from Sitka, has lately been 

 characterized (Bull. Ess. Inst., v, 199) : it is more like true obscurus 

 than like var. richardsoni, having the broad terminal slate bar of the 

 tail. 



381b. TETRAO OBSCURUS Say, 

 Wr. FULIGINOSA (liidg.). 



Sitkasi Idiasky Ci^i-oiise. 



No. 384. A pale form of Cupidonia, from Texas, has lately been 

 characterized (Bull. Ess. Inst., v, 199) :— 



384a. CUPIDONIA CUPIDO (L.) Bd., 



var. PALLIDICINCTA Kldg. 



Xexaii Prairie Hen. 



No. 400. A variety of this species is described by Mr. Ridgway, 

 (Am. Nat., vlii, 1874, 109), as A. melodus var. circumcinctus, having 

 the black pectoral band complete. 



400a. ^GIALITIS MELODUS (Ord) Cab., 

 var. ciPvCUMCiNCTUs Ridg. 

 Mii§souri Pis>ing- Plover. 



No. 400bis. A new species of uEgialitis is described from San Fran- 

 cisco by Mr. Ridgway (Am. Nat., viii, 1874, 109). 



400bis. iESGIALITIS MICRORHYNCHUS Ridg. 

 §len(ler-6»ille<l Plover. 



No. 401. The American form of ^. cantianus may be considered 



