1878.] THE ISLANDS OF DINAGAT, EAZOL, NIPAH, AND SAKUTOK. 571 



olive-green external margins. Rectrices above like the quills, narrowly tipped with albescent 

 fringe. Under wing-coverts and axillaries pure white. Bill (dry specimen) brown at tip, yellow 

 at base. 



Wing 1-94 inch, tail 1-00, tarsus 0-50, culmen 0'37. 



31. Prionochilus olivaceus. (Plate VIII. fig. 3, in orig.) 



PrionocMlus olivaceus, Tweeddale, Ann. & Mag. Nat. Hist. ser. 4, vol. xx. p. 536 (December 1, 

 1877). [Antea, p. 564.] 



[Dinagat, ? , June : iris sienna-brown ; bill grey-black, base of mandible paler ; legs light 

 grey.] 



$ . Entire upper surface, wing-coverts, and surftxce of closed wing uniform pure olive-green, r.Z.S.l878, 

 which colour encircles the eye and covers the sides of the neck. Space before the eye, cheeks, P* 

 sides of tliroat, and the upper breast grey. Lower breast, abdomen, flanks, and under tail-coverts 

 the same grey washed faintly with olive-green, the mesial line being albescent. Chin and tln-oat 

 white, slightly greyisli, forming a broad, well-defined greyish-white stripe, commencing at the 

 chin and descending to the breast. Axillaries and iinder wing-coverts pure silky white. Remiges 

 and rectrices dark brown, margined with the olive-green hue of upper plumage. 



Wing 2-12 inches, tail 1-25, tarsus 0-62, culmen 0-37. 



Since I described this species (/. c.) I have received the male, which in no way differs. 



32. NeCTAROPHILA SPERATA (122). 



[Dinagat, 6 , June ; J. $ : iris brown ; bill very dark brown ; legs black, c. June : iris dark 

 brown; bill black, mandible brown ; legs black, d. 6 (juv.), June: iris dark brown, e. Nipah, 

 d , July.] 



I cannot separate example d ( d juv.) from examples b and c ( 2 )■ A slight supercilium, 

 chin, throat, cheeks, and wliole lower surface pale uniform greenish yellow, above olive-green. 

 They differ from a supposed female, ex Surigao, described (P. Z. S. 1877, p. 830) by having the 

 chin, throat, and cheeks uniformly coloured with the breast and abdomen, but agree in the ruddy 

 colouring of tlie wing when closed. A fourth example (sex not stated on label) is undistin- 

 guishable from the Surigao female previously described (I. c). 



33. Arachnechthra jugularis (123). 

 [Dinagat, ? , June.] 



34. ^THOPTGA DUBIA, n. sp. 



[Dinagat, <s , June : iris yellow-brown ; bill brown ; legs dark grey ; feet ochreous. b, s , 

 June : bill and legs very dark brown, c. 2 , June : iris bright Indian-red ; bill black ; legs 

 light brown.] 



cJ (juv.]). Above, wing-coverts, and exposed surface of quills olive-green. Uropyginm 

 bright sulphur-yellow, forming a broad yellow band. Rectrices black, edged with olive ; laterals 

 tipped with pale yellow-olive. Feathers of the lower surface ashy at their base, and all tipped 



