PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 43 



altliough 12 years younger, has been generally adopted, but it must 

 give way to the older name, for the suppression of which I see no 

 reason. 



The following is the synonymy of the genus : 



Urinator Cuv. 



<^17o8.—Coli/mbu8 Lin., Syst. Nat, ed. 10, I, p. 135. 



= 1760. — Mergus Bmss., Omith. VI, p. 104 (wee Linn. 1758.) 



< 1777.— JJria Scopoli, Introd. p. 473 (neo Briss. 1760). 

 = 1799.— Urinator Cuv., Anat. Comp. I, Tabl. II. 



= ISn.—Eiidytes Illig., Prodr. Syst. p. 282. 



< 1811-31. — Cepphus TiVLJu., Zoogr. Ross. -As. 



y 1829.— Eudites Kaup, Entwg. Eur. Thierw. p. 144. 



All the species belonging to this genus occur in North America, viz : 



1. Urinator immer (Beunn.), 



usually known among North American ornithologists as C. torquatus 

 BRtJNN.; but as the former name also is ncceptable to those writers who 

 follow the Stricklaudfan code of nomenclature, and who reject specific 

 names older than 17GG, I have found the name C. immer preferable, 

 liecause it also occurs in the 12th edition of Linn^i Syst. Nat. 

 The synonymy of the species is given as follows : 



1764. — Coljimbus immer Brvsn., Ornith. Bor. p. 38. 



1764. — Colyinhus torquatus Brunn., torn. cit. p. 41. 



1765. — Colymbiis maximus GuNX., Tr. Selsk. Skr. Ill, ]). 125. 



1766. — Colymbus glacialis Lin., Syst. Nat. ed. 12, I, p. 221. 



1790. — Merg us nwvius Bo:<y; AT., Enc. Meth. Orn. I, p. 73. 



1810. — Colipubus airogularisMKYF.R & Wolf, Taschb. Vog. Deutschl. II, p. 449 (partim). 



1824. — Colyinbus hfiemalis Brm., Lehrb. Eur. Viig. II, p. 883. 



1831. — Colymbus hiemalis Brm., Handb. Viig. Deutschl. p. 972. 



2. Urinator adammi (G. R. Gray), 1859. 



3. Urinator arcticus (Linn.), 1758. 



4. Urhiator iMcificus (Lawr.). 



5. Urinator lumme (Brunn.), 17G4. 



This is the G. septentrionalis Lin. 1706. But as Linn^i^us does m)t 

 give the name either in the 10th edition o.f Syst. Nat. or in 2d ed. of 

 Fauna Svecica (17G1), the name of BRiJNNiCH is to be used. 



OIV THE GEIVEKA HARPORM\ 3fCHUS, CABAIVBS. AIVD ITIETDIRIOPTE- 

 Rrjsi, REaCHE.'VBACSI, AVITDI A WEWCRIPTIOIV OF A rVEW" «Ej\US 



OF MIlTiaiVJE. 



By ROBERT RIDGWAY. 



In treating of the genus Harporhi/nchus, in its comprehensive sense, 

 most authors have alluded more or less strongly to the great difference 

 in ibrm presented by the type of the genus [H. rediviviai) on the one 

 hand and certain species associated with it under the same generic name 



