No. 1626. MAMMALS FROM HASTERN SUMATRA—LYON. 651 
CYNOGALE BENNETTII Gray. 
1837. Cynogale bennettii Gray, Mag. Nat. Hist., I, p. 579. 
1889. Cynogale bennettii, JENTINK, Notes Leyden Museum, XI, p. 24. 
1905. Cynogale bennettii, SCHNEIDER, Zool. Jahrb. Syst., XXIII, p. 97. 
Two specimens of this rare and interesting animal were secured, an 
adult female from Aru Bay and an immature male from the Siak 
River. The uterus of the female contained two fetuses. The two 
specimens, Cat. Nos. 148621 and 144122, U.S.N.M., adult female and 
young male, measure respectively, head and body, 617, 520 mm.; tail, 
180, 185; hind foot, 106, 103; weight, 7? pounds (3.5 kilos), 4% pounds 
(2.2 kilos); greatest length of skull, 123, 110; basal length, 114.8, 
102.8; zygomatic width, 60.8, 53.38; interorbital constriction, 10.2, 15; 
maxillary toothrow (alveoli), 49, 47. 
“Female caught by a Malay in a fish trap.”—W. L. Abbott. 
ARCTICTIS BINTURONG (Raffles). 
1822. Viverra? binturong RAFFLES, Trans. Linn. Soec., London, XIII, p. 253. 
1905. Arctictis binturong, SCHNEIDER, Zool. Jahrb. Syst., X XIII, p. 97. 
Six skins and skulls. For localities and measurements see table, 
page 652. 
Three of the specimens are in the black phase and three in the 
grizzled phase. I can not agree with Schneider“ or Blanford ° that 
the grizzled or gray phase is entirely characteristic of the young. 
One specimen of the present series, Cat. No. 148619, U.S.N.M., from 
Pulo Payong, is an old male, and is much grizzled everywhere except 
the tail, which is almost entirely black. Its ears are conspicuously 
tufted. Cat. No. 144118, U.S.N.M., a young male from the Siak 
River, is as black as any specimen in the collection. 
The skulls appear quite as variable as the skins in respect to size 
and to inflation of the frontal bones. The skull of adult male, Cat. 
No. 143618, U.S.N.M., from Aru Bay, has a total length of 145 mm., 
while a much older specimen of the same sex, Cat. No. 148619, from 
Pulo Payong, has a total length of only 130.5 mm. In Cat. No. 
144117, a young adult female from Sungei Mandau, has the frontal 
bones very much inflated in a perfectly symmetrical manner. An 
examination of their interior structure does not reveal anything that 
may be considered pathologic similar to the evidently abnormal 
swellings in the skulls of many specimens of the American genus 
Mephitis. (See Plate LI, figs. 2 to4.) Cat. No. 143618, U.S.N.M., 
from Aru Bay, has a normal or typical skull with respect to the 
frontal bones. (See Plate LIT, fig. 1.) Cat. No. 143619, U.S.N.M., 
from Pulo Payong, is intermediate between these two extremes as 
regards frontal inflation. 
4 Zool. Jahrb. Syst., XXIII, 1905, p. 97. 
6Fauna of British India, Mammals, 1888, p. 118. 
