594 
PROCEEDINGS OF THE NATIONAL MVSEUM. 
VOL. XXXtl. 
EX PI ,A N ATION OF PLATES. 
pLATKii LIV t LV, ANJ> LVI. 
Do real, lateral, and ventral view# of skulls of Old World porcupines. All figures 
one-half natural size. 
Fig. L Titfcuruit Bumatra\ Tyi*?, Cat No. 143432, U.S.N.M., Am Bay, Sumatra. 
2. Athtrurus lerttUiuit. Type, Cat. No. 123971, U.8.N.M., Puto Terutau, west 
coast Malay Peninsula. 
3. Trichys macroiis. Type, Cat. No, 114438, C.S. N.M., Tapanuli Bay, Sun ultra. 
4. Ifydrix fTintaht. Cat No. U.S.N.M., received from National /Zoological 
UUVTtl 
Park. 
5. Aoanihhn Orachtptrum. Cat. No. 83511), C.S.N.M., Trong, Lower Siam. 
Plate LVIl. 
Tail bristles and cervical and lumbar vertebrae of Malayan porcupines. All figures 
three-fourths natural size. 
Fig, 1, Tail bristle of Aauit/thn. 
2, Tail bristles of Tkeeurtut. 
3, Tail bristle of AtJicrurm, 
4. Tail bristle of Tricky x. 
5. Axis or second cervical vertebra of Tricky#. 
(i. but id tar vertebra of Tricky*, 
7, Axis or second cervical vertebra of Athmirti#. 
K Lumliar vertebra of A titer unit. 
H. Axis or second cervical vertebra of Them nit. 
111. Iannbar vertebra of Thceurm. 
IS, Axis or second cervical vertebra of Acanthimi. 
12. Lumbar vertebra of Atxmtiiim. 
