12 



THE VOYAGE OF H.M.S. CHALLENGER. 



9. Eurystomus oriehtalis, Linn. 



Coracias orimtalis, Linn. Syst. Nat., vol. i. p. 154, No. 4, 1766. 



Eurystomus orientalis, Walden, Trans. Zool. Soc, vol. ix. p. 152 ; Proc. Zool. Soc, 1877, pp. 540, 

 690, 757, 822; 1878, pp. 108, 282, 341, 613; 1879, p. 69. 



[No. 426, $ . Pasananca. Feet and bill red ; tip of mandible black.] 

 Agrees with Ceylon examples, as well as with those from localities already mentioned 

 {lice). 



10. Pclargopsis gigantca, Walden. 



Pelargqpsis gigemtea, Walden, Ann. and Mag. Nat, Hist., vol. xiii. p. 123, ser. 4, 1874; Proc. 

 Zool. Soc, 1877, pp. 541, 822; 1878, pp. 108, 341, 943; 1879, p. 69. 



[No. 352, $ . Ilo-ilo. Eyes black ; feet red ; bill red, tipped with black. Stomach 

 had fish. 



No. 400, ? . Malanipa. Eyes black. 



No. 417, $ . Pasananca. Eyes black ; bill and legs red. Had in the stomach an eel 

 about 6 inches in length.] 



The example from Malanipa (No. 400), from which island the species has not been 

 hitherto recorded, and the one from Pasananca (No. 417) are somewhat smaller than the 

 type specimen of Pelargopsis gigantea, but in other respects do not differ specifically. 

 In colouring, the Malanipa bird is hardly distinguishable from the type ; but the 

 Mindanao example has the wings, scapulars, and interscapulars of a much purer blue. 

 The Panay bird (No. 352) has the same parts of a still purer blue (as opposed to 

 greenish blue), and all the plumage, including the head, which is more or less white 

 in the type, is creamy buff, most intense on the flanks, abdomen, and under tail- 

 coverts. 



Our acquaintance with the mutations of colouring and what they denote in many of 

 the so-called species of this group is yet very limited ; and I prefer to retain for the 

 present the Ilo-ilo bird under the title above given. 



The specimens measure as follows : — 



