Olson • THE EXTINCT HAWAIIAN GENUS CIRIDOPS 
657 
TABLE 1. External measurements (mm) of skin specimens of Ciridops anna. Oilmen length is from base of feathers to 
tip. Width of culmen and depth of bill taken at level of anterior margin of nostril. 
Museum number am! presumed sen and age 
Wing chord 
Tail length 
Tarsus length 
Culmen length 
Culmen width 
Bill depth 
BPBM 19. adult male (holotype; 
Wetmore’s measurements in 
parentheses) 
81.5 (83.0) 
48.8 (49.0) 
19.7 (21.0) 
11.8 (11.0) 
4.4 
5.6 
MCZ 10995, adull male 
80.4 
46.2 
21.2 
10.6 
AMNH 459008. suhadull male 
74.8 
43.3 
19.7 
11.4 
4.1 
5.2 
BMNH 1939.12.9.58. subadult male 
77.1 
42.7 
22.3 
9.9 
3.5 
4.6 
AMNH 230275 (formerly MCZ 
10987). adult female 
72.0 
45.4 
20.9 
9.3 
3.9 
4.4 
representative for the genus. The most detailed 
description available is from notes by Alexander 
Wetmore when he visited the Bishop Museum 
as part of the Tanager Expedition (Olson 1996). 
His description was based on the holotype (BPBM 
19) and is far more detailed and accurate than 
Rothschild's (1900: 181), which was presumably 
based on one or both of the specimens then in 
his collection (AMNH 459008; BMNH 1939. 
12.9.58): 
Wing 83.0 [mm], tail 49.0, culmen from base 
11.0, tarsus 21.0. Nostril set in a slight 
depression only parlly concealed by frontal 
plumes. Culmen slightly curved downward, 
sides of bill nearly straight in outline: gently 
rounded. Outline of maxillary tomium faintly 
concave, slightly sinuate. Tip of maxilla acute 
on sides, slightly broadened when viewed from 
above. Lower mandible with sides rounded. 
Line of gonys straight. Mandibular rami slightly 
less that half | the length of the | gonys. Feathers 
of forehead short and plushlike. Small rictal 
bristles present. Wing formula 7, 8,6. 5. 9. 4. 3, 
2. 1. | Primaries! 6, 7. 8 nearly equal, 9 only 
slightly shorter than 5. Wing tip about 20.0 mm. 
Tenth primary on upper side of wing 8.0 mm 
long. Tarsus scutellate. Basal joint of 4th toe 
wholly adherent to middle toe. Basal joint of 
2nd toe adherent to middle toe for slightly more 
than one third length. Second toe with claw 
reaching beyond base of claw on middle toe. 
Fourth toe with claw reaching to base of claw on 
middle toe. Hind toe and claw strong equal to or 
slightly more than middle toe without claw. Tail 
very slightly notched, rectrices 12. Feathers of 
throat and ear coverts lanceolate with long 
slender lips. (A. Wetmore Held notes. 31 Mar 
1923. Division of Birds archives, Smithsonian 
Institution). 
Skin Measurements (Table 1).—Additional 
measurements of the bill of Ciridops anna 
(MCZ 10995) taken prior to the removal of the 
skull from the skin (Olson et al. 1987) include: 
culmen length from anterior rim of nostril, 
7.9 mm; length of rostrum along tomium, 
11.7 mm; mandibular symphysis length, 7.4 mm; 
basal mandible width. 4.5 mm; basal rostrum 
width. 6.1 mm. Middle toe with claw 0.76 inches 
(19 mm), hind toe with claw 0.64 inches (16 mm) 
(Rothschild 1900: 183, AMNH 459008). 
Soft Part Colors .—Wilson reported the color of 
the irides to be ‘"dark hazel” (Wilson and Evans 
1893; 24), but that was either a guess used to 
instruct his artist or a surmise based on the fact 
that most drepanidines have brown eyes. He also 
reported "bill and feet pinkish brown” presum¬ 
ably based on dried skins. Pratt (2002a: 9) gives 
the bill and leg color as “brown.” 
Plumages 
Presumed Adult Male Plumage .—BPBM 19 
and MCZ 10995 (Frontispiece, Fig. I). J. P. 
Hume, H. D. Pratt (in litt. 20 Jan 2012), and I 
consider these two specimens lo be identical in 
plumage and Pratt's illustrations (Raikow 1977; 
Pratt et al. 1987; Scott et al. 1988: Prall 2002a. b; 
Pratt 2005, 2010) may be considered idealizations 
of both (H. D. Pratt, pers. comm.). Illustrations in 
Carlquist (1965) and Berger (1972, 1981 ) may 
be based on BPBM 19 but are poor at best. 
Underparts: throat and breast, extending onto 
upper belly, black, grading to brownish on the 
Hanks; the rest of the belly is scarlet, there is a 
light patch at the anterior of the vent region that 
has been described as tawny but in MCZ 10995 is 
lemon yellow, the rest of the vent and undertail 
coverts are rich brown. Upperparts: the lores, 
torecrown, posterior portion of the mantle, wings 
