268 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Genus CAMPYLORHAMPHUS Bertoni. 
Xiphorhynchus (not of Swainson, 1827 @) AurHors. | 
Xiphorynchus (emendation) Maximinian, Beitr. Naturg. Bras., iv, pt. iii, 1831, 
1139. 
Ziphorhynchus (emendation?) Swainson, Classif. Birds, ii, 1837, 318. 
Campylorhamphus » Bertoni, Aves Nuevas del Paraguay, 1901, 70. (Type, 
C. longirostris Bertoni=Dendrocolaptes 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 Dendrocolaptide (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 antize 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 terminal sete. Wing 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, distinctly 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 first and second 
phalanges of outer toe), to inner toe for whole of its first phalanx; 
@ Ag Mr. Oberholser states (Smithsonian Misc. Coll., xlviii, 1905, 62) while ‘‘Swain- 
son evidently intended to make Dendrocolaptes procurvus 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 xapnbdoc, bent, curved; payor, bill. (Bertoni.) 
¢ Elpoc, ensis, and dove, avis. (Oberholser.) 
