710 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Alle nigricans Linx, Beschr. Nat.-“Samml. Univ. Rostock, i, 1806, 17 .—CovgEs, 
Bull. Nutt. Orn. Club, iv, 1879, 244; Check List, 2d ed., 1882, no. 863.— 
Riweway, Proc. U. S. Nat. Mus., iii, 1880 (Cat. N. Am. Birds, no. 752); 
Nom. N. Am. Birds, 1881, no. 752.—Parx, Bull, Nutt. Orn. Club, vii, 1882, 
61 (Lansingburg, on Hudson River, Nov. 8, 1881).—Dutcuer, Auk, i, 1884, 
35 (Fire Island, New York, Nov., Dec.). 
Allle] nigricans Cours, Key N. Am. Birds, 2d ed., 1884, 810. 
U[ria] grylle (not Colymbus grylle Linnzus) BonnaTERRE, Tabl. Enc. Méth., i, 
1790, 36, pl. 9, fig. 5. b 
Mergulus melanoleucos Leacu, Syst. Cat. Mam., etc., Brit. Mus., 1816, 42 (nomen 
nudum); in Ross, Voy. Disc. Baffin’s Bay, 1819, App., p. 1—SrerHens, 
Shaw’s Gen. Zool., xiii, pt. 1, 1826, 34.—Brannr, Bull. Ac. St. Petersb., ii, 
1837, 347.—Tuompson, Nat. Hist. Ireland, iii, 1851, 218 —Branpr, Mélang. 
Biol:, vii, 1869, 221—Gray (R.), Birds West Scotl., 1871, 431.—RowLey, 
Orn. Misc., i, 1875, 126 (Melville Bay). 
‘Colymbus glocitans O’Remuy, Greenland, 1818, 146, pl. 14, fig. 1. 
Uria minor MerreM, in Ersch u. Gruber, Encycl., sect. i, ii, 1819, 406. 
‘Cephus minor MENEVILLE, Icon. Reg. Anim., Ois., 1829-38, pl. 60, fig. 5. 
Mergulus arcticus Breum, Handb. Vig. Deutschl., 1831, 994. 
Genus PINGUINUS Bonnaterre. 
Plautus (not of Gunnerus, 1761) Brinnicu, Zool. Fund., 1771, 78. (Type, by 
monotypy, ‘‘Brillefuglen®’=Alca impennis. Linneus.) 
Pingwinus Bonnaterre, Tabl. Enc. Méth., i, 1790, 28. (Type, Alcea impennis 
Linnzus. ) 
Pingwin (emendation) Fischer DE Wa.pHEtm, Nat. Mus. zu Paris, ii, 1803, 188. 
Torda Duma, Zool. Anal., 1806, 72. (Type, Alca impennis Linnzeus.) 
Chenalopex Dumont, Dict. Sci. Nat., viii, 1817, 392. (Type, by monotypy, 
Alca impennis Linneeus.) 
(?) Chenalopex ‘‘Moehr[ing]® Vierttot, Nouv. Dict. d’Hist. Nat., xxiv, 1818, 
132. (No type designated, and pertinence uncertain.) 
Chenalopes (emendation) ViztLuot, Nouv. Dict. d’Hist. Nat., xxiv, 1818, 466. 
« (Type, Grand alque ou grand pingouin=Alca impennis Linneus.) 
Mataeoptera GLocER, Hand-und Hilfsb., 1842, 475. (Type, Alca impennis Linn- 
zeus.) 
Gyralca SrzENsTRUP, Vid. Med. Nat. For. Kjob., 1855, 114. (Type, Alca impen- 
nis Linneeus.) 
Largest of Alcide (exposed culmen 80 or more, the feebly de- 
veloped wing about 146 mm.) with wings feebly developed, unfitted 
for flight; bill about-as long as head, the mandible (as well as maxilla) 
with numerous transverse grooves, and tail composed of 14 rec- 
trices. 
Bill about as long as head, the distance from anterior end of nos- 
tril to tip of maxilla greater than from same point to rictus, deep 
and greatly compressed, its greatest depth more than twice its 
greatest width; culmen slightly concave basally, then faintly arched 
and strongly curved to the decurved tip; gonys slightly but dis- 
tinctly concave distally, convex and prominant basally; maxilla 
with a distinct oblique basal lamina, narrower above, its distal half 
with several (about 6 to 10) oblique, faintly curved lateral grooves, 
