Measurements. 







Wing 



Tail 



Tarsus 



Bill from cere 



202 



134 



21 



34 



192 



125 



22 



31 



198 



131 



21 



32 



196 



125 



19 



32 



197 



120 



* 21 



33 



193 



133 



22 



33 



19'1 



122 



20 



28 



190 



123 



19 



29 



190 



123 



20 



30 



188 



122 



20 



29 



189 



128 



21 



30 



190 



131 



21 



30 



185 



118 



20 



29 



237 



No. Sex 



235875 Male 



235876 



235877 " 



235878 



235879 



235887 '* 



235880 Female 



235881 



235882 " 



235883 " 

 235884 

 235885 

 235886 



Remarks. — Tanygnathus salvadorii Ogilvie-Grant (Ibis, 1896, 

 p. 562, Mantanani I., northwestern Borneo) is smaller than 

 lucionensis and lacks the black shoulders, but is best regarded as 

 a form of the latter. Tanygnathus heterurus Salvadori (Ann. 

 Mus. Civ. Genova, vol. 45, 1912, p. 328, origin not definitely 

 known) remains unique and differs from all other known species of 

 the genus in having the under surface of the tail '^olivaceo- 

 rufescente'' instead of yellowish green. 



Muscitrea grisola grisola (Blyth) . 



Nine specimens: adults of both sexes, and one immature. 



Compared with a series from Java, the Maratua Island birds 

 are quite the same in color and size. The bill averages a trifle 

 larger but this difference is altogether too slight to be of any real 

 significance. 



Hypothymis aeria, sp. no v. 

 Ten specimens: adults of both sexes, and one immature male. 



Type. — No. 235918, Museum of Comparative Zoology, adult male, from 

 Maratua Island. Collected March, 1926, by E. Mjoberg. 



Characters. — A distinct species; the male without a black occipital patch and 

 with all the feathers of the crown normal; no black chin spot; a narrow black 

 jugular collar; in color bright blue, with a white belly. 



Color. — Adult male. A narrow black frontal band; remainder of upper 

 parts Helvetia blue; throat, chest, and upper breast Helvetia blue, a narrow 

 black crescent between throat and chest; under tail-coverts and belly bluish 

 white, gradually merging into color of chest on lower breast; wings and tail 

 dusky, edged with blue slightly deeper in tone than the blue of the back ; bend of 

 wing blue; under wing-coverts white; bill and feet black. 



Adult female. Similar to the male but somewhat duller and grayer blue, 

 and lacking the black jugular collar. 



