1869. ] BIRDS FROM THE TONGA ISLANDS. 545 
fined to the Tonga Islands, viz. Platycercus tabuensis, Pachycephala 
jacquinoti, Ptilinopus porphyraceus, Rallus hypoleucus, and Mega- 
podius burnabyi. Now, the museum of Mr. J. C. Godeffroy at 
Hamburg has been enriched of late by a small series of birds from 
the Tonga Islands, which has been submitted to our scientific exami- 
nation. This collection comprises in the whole eleven species, the 
following three of which are additional to the above list :—Lalage 
terat, Ptilinopus perousii, and a very remarkable and typical new 
species of the genus Myiolestes. 
1. Strix peLicatuLa, Gould; Finsch et Hartl. Beitr. Orn. 
Centralpol. p. 11. 
One specimen in spirits. Agrees in every respect with our de- 
scription. 
Long. al. caud. culm. tars. dig. med. 
gi" 4ll gi git! AL gi 14!" 
2. PLATYCERCUS TABUENSIS, Gmel. ; Finsch. et Hartl. 7. c. p. 17. 
Five specimens, all deeply in moult. Chin and upper part of 
throat of a dark-brown colour, which deepens more or less into black. 
The colour of the under parts is rich and deep brownish purple, 
e ach feather having a green band across the middle ; the uropygium 
is in three of the specimens of a uniform green; in the two others 
the green feathers have red-brown margins; the fine blue nuchal 
collar is in one bird very distinct and broadly developed, in the four 
others it appears rather narrow. 
ong. al. culm, tars. 
Long caud. 
gi 3ill_g!! Qi vA git_gtt 3m 113-15" 11-12" 
3, Hatcyon sacra, Gmel.; Finsch et Hartl. 7. c. p. 32. 
Six specimens. One in the adult plumage, as described by us on 
page 33. In the five others a fulvous ocular stripe and nuchal band 
are more or less distinctly visible; one bird has the wing-coverts 
narrowly but distinctly margined with ferruginous, and on the sides 
of the breast are faint traces of darker undulations. “ Iris brown.” 
Long. al. rectr. med. culm. tars. dig. med. 
gn gilt Qi gi_git git 163-17!" at gir 
4, Prizoris cARuNCcuLATA, Gmel.; Finsch et Hartl. /.c. p. 58. 
Three specimens. Not differing from our description; but the 
upper margin of the naked lobe of a fine sulphur-yellow. Very 
variable in size. 
Long. tot. al. caud. culm. tars. 
7—-8!! 3i y]M_4" ue gu ppg 3 9-10!" 13-14!" 
The relative length of the wing in these Tonga birds is rather 
curious. In nine specimens from the Samoan Islands the wing did 
not exceed 3!! 8!!", 
