105 [Vol. xvi. 



surface dull greenish-brown ; chin and throat greyish- 

 browU;, streaked with darker brown. 



Total length 6 inches, culm. 0*4, wing 6'1. 



Hah. Mayotte Island. 



BUTORIDES CEAWFOKDI, Sp. U. 



Forehead and crown glossy green, every feather broadly 

 tipped with deep blue, giving the head a distinctly blue 

 appearance ; hind neck pale grey, as also the sides of the 

 neck and breast. Dorsal plmnes bottle-green at the base, 

 the remainder greyish-blue ; rump brownish-grey ; upper 

 tail-coverts bluish-green ; rectrices bluish-green, narrowly 

 fringed all round with white ; remiges greyish-blue, 

 narrowly edged with white ; wing-coverts dull bottle 

 green, with purplish reflexions, and edged with buffy- 

 white ; underside of the wing whitish-grey ; under wing- 

 coverts milky-white ; sides of the face yellowish- white ; a 

 black streak from the eye to the ear-coverts ; chin, front 

 of neck, middle of breast, and entire abdomen, creamy- 

 white ; a line of indistinct greyish-black spots from the 

 chin to the upper breast, down the middle of the throat ; 

 under tail-coverts white, with a black spot on the longest 

 pair. 



Total length 12-4, culm. 2*3, wing 6*2, tarsus 1*6. 



Hah. Assumption Island, Indian Ocean. 



" Dr. W. L. Abbott did not find any species of Butorides 

 on Assumption." (Cf. Eidgway, Proc. U.S. Nat. Mus., 

 XVIII., p. 541.) 



Centkopus assumptionis, sp. n. 



Similar to G. insularis, Eidgw,, from Aldabra, but con- 

 siderably smaller; the wings darker maroon, especially the 

 underside of the quills. 



Total length about 16 inches, culm. 1*1, wing 5*8, 

 tarsus 1'4. 



Hah. Assumption Island, Indian Ocean. 



TUETITR ASSUMPTIONIS, Sp. n. 



Nearest to T. aldabranus, but darker, especially on the 



