139 
225b. Spilornis rufipectus sulaensis (Schl.) Vég. Sula Islands. 
Ned., Valkvég., p. 38, pl. 23, figs. 4-6 (1866). 
[Sula Is., type in Leyd. Mus.] 
Sula Serpent-Eagle. 
Wing ¢ 306, ¢ 309 mm.; rufous of chest 
paler. 
226. Spilornis holospilus holospilus (Vigors), Philippine Is. 
P.Z.S., 1831, p. 96. [Near Manila.] (Luzon, Cebu, 
Philippine Serpent-Eagle. Mindanao, 
Basilan.) 
Larger ; wing 9 341-367 mm. ; above pale 
brown, with a purplish gloss, the feathers 
irregularly spotted with white at tips ; in- 
terscapulary region with pale rufous tips 
and large rounded white spots ; head and 
crest ashy black, spotted with white, and 
with rufous margins; tail with broad 
median and subterminal blackish bands ; 
face and throat ashy grey; rest of under 
parts pale tawny rufous, ocellated with 
spots and half bars of white. 
226a. Spilornis holospilus panayensis Steere, List Philippine Is. 
Birds, etc., Philipp., p. 7 (1890). [Panay, (Panay, 
Philipp. Is., type in Brit. Mus.] Guimaras, 
Steere’s Serpent-Eagle. Negros.) 
Wing @ 317 mm.; very much paler, 
especially below, without the rufous shade 
on breast and belly. 
Gen. LXII. TERATHOPIUS Less. (Traité, livr. i., Febr., 1830). 
Type by monotypy Falco ecaudatus Shaw =F. ecaudatus Daud. 
[ =Helotarsus, auct. plur.] 
Head with a crest of rounded feathers ; tail ex- 
tremely short ; wings exceeding tip of tail by more 
than length of tarsus ; size large. 
