so. im. 
.VOTES ON MALAYAN FORVl r PIN£S-LYON. 
5 79 
pointed apex. The sides of head, the under parts, and the legs are in 
general covered with soft flattened spines similar to those in the upper 
bafck, but shorter and not so stiff. 
Skelckm. —The main features of the skull of the genus Acanthion 
have previously been pointed out. The relative size and shape of the 
skull and of its various parts are clearly shown in tig. 5, Plates LI V, LV, 
and LVI, so that no detailed description is necessary here. The verte¬ 
bral formula is Cv. 7, L>, 14, L. 5, S. 4, Cd. about 15. The axis bears 
a large rectangular neural spine, projecting backward as a thin plate 
o f bone, 1 ate rally compressed. {Plate LV11, tig. 11.) The seventh cer¬ 
vical bears a long pointed neural spine, about three times the length of 
the neural spine in front of it, and about half the size of the first 
dorsal spine. The lumbar vertebrae have large rectangular lateral 
processes, directed forward. (Plate LV11, fig. 12.) The first and half 
of the second sacral vertebras serve for the attachment of the ilia. The 
presternum is relatively long, and its expanded part relatively narrow. 
The limb bones are relatively short and heavy, the scapulas wide. 
ACANTHION BRACHYURUM (Linnaeus). 
1758, [iTj/jutrfx] braeh.tfv.ra Lins.eus, Systems Naturae, 1,10th ed,, p. 57. Based 
on Seba, Re nun Nat. Thesaur., I, p. 81, pi. lii, tig. 1, from .lava, Sumatra, 
and from Malacca. In view of Selm'a name Ihjatrix malaceerms and his 
especial reference to its locality as Malacca, that country may properly l>e 
considered the type-locality. 
1866. Amntkodiarm grtAei Gray, Proe. Zool. Soe. London, 1806, p. 310, pL xxxi. 
Type-locality: Malacca. (See Proe. Zool. Soe. London, 1868, p. 417.) 
1871. Hyslrijz Umgimudft, Sclater, Proe. Zool. Soe, London, 1871, p. 234. 
1000. liy/irix longicauda, Flower, Proe, Zool, Soe. London, !!KK>, p. 364. 
1903. HysixixgvotiL, Ron mm:, Fasc. Malay, Zool., I, July, 1903, p. 39, pi, m. 
1)mirth atkm , — Malay Peninsula. 
Diagnostic characters .— Apparently the largest of the Malayan 
species. Greatest length of skull, 135 to 150 mm. 
Color .—Upper half of hack, top of head, miderparts, and legs and 
feet, an indefinite blackish brown or brownish black; a dirty white or 
dirty buff patch on throat, partly extended upward and backward 
along the side of neck. This is followed by a blackish brown collar 
and this in turn by a lighter collar, but this latter is not always well 
marked. The quills are dirty white or dirty buff in color, each with 
a band of blackish brown 20 to 30 mm. wide at or below the middle. 
Skull . — The only peculiarity of the skull of this species apparently 
is its large size, total length of an old adult being 150 mm. and of a 
young adult about 140 mm, 
Measuvemenis . — See table, page 593, 
Specimensexamined .—One old female from Champang, Tenasserim; 
two adults and two young from Trong, Lower Siam. 
