268 BULLETIlsr 50, UNITED STATES NATIONAL MUSEUM. 



Genus CAMPYLORHAMPHUS Bertoni. 



Xiphorhynchus (not of Swainson, 1827 o) Authors. 



Xiphorynchus (emendation) Maximilian, Beitr. Naturg. Bras., iv, pt. iii, 1831, 

 1139. 



Ziphorhyndms (emendation?) Swainson, Classif. Birds, ii, 1837, 313. 



Campylorhnmphus b Bertoni, Aves Nuevas del Paraguay, 1901, 70. (Type, 

 C. longirostris liertoni—Dendrocnlaptcs procurvus Temminck.) 



Xiphornis<^ Oberholser, Smithsonian Misc. Coll., Quart. Issue, xlviii, no. 

 1579, May 13, 1905, 64, in text. (Type, Dendrocolaptes procurvus Tem- 

 minck.) 



Medium sized DendrocolaptidfB (length about 200-250 mm.) 

 with excessively elongated, slender, compressed, and strongly arched 

 bill and broadly oval nonoperculate nostrils. 



Bill very much longer than head, more than twice as long as tarsus, 

 slender, compressed, conspicuously decurved or arched, its width 

 at latero-frontal antise much less than its depth at same point and 

 equal to less than one-twelfth the distance from nostril to tip of 

 maxilla; culmen rounded (not ridged), very strongly decurved from 

 base; tomia strongly decurved, without trace of subterminal notch; 

 gonys deeply concave and decurved, though nearly straight terminally. 

 Nostril exposed, posteriorly in contact with latero-frontal feather- 

 ing, more or less broadly oval, nonoperculate. Rictal bristles absent, 

 and feathers of chin, etc., without termmal setae. Wmg moderate, 

 rather rounded, the longest primaries exceeding secondaries by much 

 less than length of tarsus; seventh and eighth, or sixth, seventh, 

 and eighth, primaries longest, the tenth (outermost) two-thirds to 

 nearly three-fourths as long as the longest, the ninth intermediate 

 between third and fourth (C. venezuelensis) or between fifth and 

 sixth (C. pusillus). Tail nearly as long as wing, graduated one- 

 fourth to more than one-third its length, the rectrices (12) acumi- 

 nate, with their very strong and rigid shafts decurved terminally. 

 Tarsus about one-fourth as long as wing, distmctly scutellate (en- 

 daspidean); middle toe, with claw, a little longer than tarsus; outer 

 toe (with or without claw) as long as middle toe; inner toe, without 

 claw, reaching to a little beyond subterminal articulation of middle 

 toe; hallux decidedly shorter than inner toe, decidedly (but not 

 conspicuously) stouter; middle toe united to outer toe for whole of 

 its first and about half of its second phalanx (for fu'st and second 

 phalanges of outer toe), to inner toe for whole of its first phalanx; 



o Ab Mr. Oberholser states (Smithsonian Misc. Coll., xlviii, 1905, 62) while "Swain- 

 Bon evidently intended to make Dendrocolaptes prociirvus Temminck the type of 

 Xiphorhynchus, he defeated his purpose by allowing the previous publication of 

 Xiphorhynchus in combination with the name of a species of another group, such 

 publication being quite sufficient to fix the name of a genus." 



b KajinuXoc, bent, curved; phjKJwg, bill. (Bertoni.) 



'^ f /^of, ensis, and 'dpvc^, avis. (Oberholser.) 



