72 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



{1) Hlirundo'] melampyga Lichtenstein, Verz. Doubl., 1823, 57 (Bahia, Brazil; 

 coll. Berlin Mus. ). 



Hirundo melanoleuca (not of Maximilian) Gray, Cat. Fissirostr. Birds Brit. Mus., 

 1848, 26. 



Atticora cyanohuca, var. montana Baied, Eeview Am. Birds, May, 1865, 310 

 (Barranca, Costa Eica; coll. U. S. Nat. Mus.; also, San Jos6, Costa Eica, 

 Bogota,, and Peru).' — Lawkence, Ann. Lye. N. Y., ix, 1868, 96 (San Jose 

 and Barranca, Costa Eica). — Feantzids, Joum. fiir Orn., 1869, 294 (Costa 

 Eica). 



Atticora qjanoleuca, . . . var. montana Boucard, Proc. Zool. Soc. Lond., 1878, 

 67 (San Jos6 and Cartage, Costa Eica). 



Atticora cyanoleuca montana Zeledon, Anal. Mus. Nac. Costa Eica, i, 1887, 107 

 (Navarro de Cartage, Zarcero de Alajuela, and Alajuela, Costa Eica). — 

 Allen, Bull. Am. Mus. N. H., ii, no. 2, 1889, 80 (Valparaiso, Chile; crit.). — 

 Cheeeie, Auk, ix, 1892, 22 (San Jos6, Costa Eica; descr. young and nesting 

 habits). — Beelepsch and Stolzmann, Proc. Zool. Soc. Lend., 1892, 374 

 (Lima and lea, Peru). — Bangs, Proc. New Engl. Zool. Club, iii, Jan. 30, 

 1902,'60 (Volcan de Chiriqui, 10,800 ft. alt.). 



Genus RIPARIA Forster. 



JRiparia « Foestee, Synopt. Cat. Brit. Birds, 1817, 17. (Type, Riparia europiea 



Forster, =Hirundo riparia Linnaeus. ) 

 Climcola Foestee, Synopt. Cat. Brit. Birds, 1817, 55. (Type, C. europssa Forster, = 



Hirundo riparia Linnaeus. ) 

 Cotile 6 BoiE, Isis, 1822, 550. (Type, Hirundo riparia Linnaeus. ) 

 Cotyle (emendation) Boie, Isis, 1826, 971. 



Small Hirundinidse (wing less than 110 mm.) with a tuft of small 

 feathers on lower portion of posterior side of tarsus; long claws, that 

 of hallux exceeding the digit in length and those of lateral toes reach- 

 ing beyond base of middle claw; color, grayish brown above, beneath 

 white with a grayish brown band across chest. 



Bill small (exposed culmen equal to about half the distance from 

 nostril to eye), moderately depressed, its depth at nostrils equal to more 

 than half its width at same point; culmen straight to near tip, where 

 gently but decidedly decurved; gonys slightly convex, ascending 

 terminally; maxillary tomium faintly concave, its subterminal notch 

 small but very distinct. Nostril rather large, ovate, opening laterally, 

 overhung by a distinct membraneous operculum, posteriorly in con- 

 tact with feathering of frontal antise. Rictal bristles obsolete. Tail 

 about half as long as wing (equal to or slightly longer than distance 

 from bend of wing to tip of longest secondaries), emargipate (depth of 

 emargination equal to not more than one-sixth its length), the lateral 

 rectrices moderately contracted terminally, with tips obtusely pointed. 



«See Coues, Auk, xv, July, 1898, 271, and Oberholser, Auk, xvi, July, 1898, 281. 



Riparia Meuschen, 1784 (Mollusca), antedates Forster's application of the same 

 name and would disbar the latter had it any nomenclatural status, which Mr. Ball 

 informs me it has not. 



6 From KooriXXEiv, to prattle; see Wharton, Ibis, 1879, 451. 



