58 BULLETIN 98, UNITED STATES NATIONAL MUSEUM. 
Doctor Abbott observed this bird on Pulo Mata, August 24 to 
September 1, 1899; and on Pulo Telaga, September 14-15, 1899. 
The two adults measure as follows: 
Measurements of specimens of Lamprocorax panayensis heterochlorus. 
$ 8 
ae Sex. Locality. Date. Collector. 2 ; Ba os 
2| #8] a /88l z 
o |e | 3 |ea] & 
&)/F lela |e 
mm.| mm.) mm.) mm.) mm. 
170996....| Male....| Pulo Mobur, Anam-| Aug. 26,1899 | Dr.W.L.Abbott..| 229 | 108 | 76 18 | 23.5 
ba Islands.? 
170997....|..- co bo ee rae GO eesceseccesseel soca GOs cee uel so OO baw ccreeceees 216 | 112 | 72.5) 20} 23.5 
1 Measured in the flesh by the collector. 2 Type. 
The earliest name among the subspecies of Lamprocorax chalybeus 
of authors is of course Lamprocorax panayensis (Scopoli),? which there- 
fore becomes the name for the species as a whole, and of which Lampro- 
corax chalybeus becomes a subspecies. The proper designation for 
the last-mentioned form is, however, Lamprocorax panayensis stri- 
gatus Horsfield,t because Turdus strigatus Horsfield * has anteriority 
over Turdus chalybeus Horsfield * of even date. 
Some recent authors have united the genus Lamprocoraxz Bonaparte 
with Aplonis Gould, on the ground that the characters usually as- 
signed to these groups are not constant. This is true, for in both 
form of bill and of tail there are intermediates, which might without 
violence find a place in either group. There is, however, a structural 
character which does hold good for the separation of all the forms 
of both generaexamined. In Lamprocorax the second (counting from 
the spurious outermost) primary is decidedly longer than the fifth, 
while in Aplonis it is usually shorter, sometimes equal, but never 
longer. Furthermore, the recognition of two genera by this criterion 
leaves all the species, with one exception, in the genera in which they 
have been. This exception is Aplonis cantoroides, and the necessity 
for its transferral was long ago suggested by Dr. R. B. Sharpe. The 
following species of these two genera have been examined in this 
connection: 
Lamprocorax metallicus (Temminck) and subspecies. 
Lamprocorax panayensis (Scopoli) and subspecies. 
Lamprocorax todayensis Mearns. 
Lamprocoraz minor (Ramsay). 
Lamprocoraz cantoroides (Gray). 
3 Muscicapa panayensis Scopoli, Del. Flor. et Faun. Insubr., pt. 2, 1786, p. 96 (Panay Island, Philip- 
pine Islands). 
4 Turdus strigatus Horsfield, Trans. Linn. Soc. Lond., ser. 1, vol. 13, pt. 1, May, 1821, p. 148 (Java). 
5 Turdus chalybeus Horsfield, Trans. Linn. Soc. Lond., ser. 1, vol. 13, Dt. 1, May, 1821, p. 148 (Java). 
§ Cat. Birds Brit. Mus., vol, 13, 1890, p. 125, 
a 
