No. 1626. MAMMALS FROM HASTERN SUMATRA—LYON. 631 
and neck is variable. In some specimens, especially those from Pulo 
Rupat, it is quite conspicuous. None of the series show a decided 
approach in color to typical Tragulus kanchil longipes of the adja- 
cent mainland, although several of the mainland form strongly 
approach the insular race. 
Skull and teeth—These show no special peculiarities, but average 
larger than those of Zragulus from the mainland. 
Measurements.—See table, page 632, and diagram, page 629. The 
latter show that Tragulus fulvicollis is a heavier animal and has a 
larger skull than either 7. kanchil kanchil or T. kanchil longipes. 
In length of hind foot it averages only slightly more than does 7’. 
kanchil longipes. 
Specimens examined.—Fourteen from Pulo Bengkalis, six from 
Pulo Padang, ten from Pulo Rupat, nine from Pulo Tebing Tinggi, 
and two from Pulo Rangsam. 
Remarks.—Typical specimens of JVragulus fulvicollis, compared 
with typical 7. kanchil, appear very distinct, but its relations with 
the latter must be quite close and are easily traced back to typical 
kanchil, by way of the abnormal specimens of 7’. kanchil longipes, 
and then through normal specimens to 7. khanchil kanchil. It would 
seem that 7’. kanchil in the lowlands of eastern Sumatra is in a state 
of active evolution and on the outlying alluvial islands has become 
T. fulwicollis, while on the mainland and on Pulo Penjalei it retains 
nearly all of the Aanchil characters with the exception of larger hind 
feet. Certain examples on the mainland, however, show its tendency 
to become 7’. fulvicollis. 
Measurements of adult Tragulus from eastern Sumatra. 
| |S oS ee 
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Name. Locality. ane Sex. ‘s Se eae ee sc hei 
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me |e = | N |= = 
mm.|mm.|mm.| kilos! mm. | mm. | mm. | mm. 
TENG DU se ASTUUB BY a2i32 set eee 143481 | Male....| 583 | 92 | 147 | 4 {105.3 | 52.3 | 42.8 | 47.2 
DONA e ees Sete COS ee See ass 143483 |....do...} 565 | 90 | 146 | 3.6 {100.1 | 51.1 | 40.7 | 46.3 
IDS Seoueeoelpasua COs aoe anes AGS A ERC Olek ever lee nle eee emcees 103.2 | 50.5 | 42.7 | 48 
DOGS sateen aces Chose eee sees 143484 | Female .| 600 | 90 | 153 | 5.2 |105 50.9 | 42.2 | 48.8 
LD) Oa Se eral eee CORSE fubye se ent 143486 |....do...| 565 | 95 | 145 | 4.1 |100.6 | 51.3 | 39.1 | 44.3 
DOSS Seni. Sungei Mandau...... 144132 | Male....| 554 | 838 | 152 | 4.1 | 97.5 | 51.6 | 36:1 | 41 
IDO ek eke eal sesoe GOR ee eee 144133 |....do...| 590 | 100 | 156 | 4.2 |101.5 | 51.3 | 35.4 | 41.3 
DOr Si Sasae: Sie IRWAOIPS Goscooooes 144136 !....do...| 550 | 90 | 154 | 4.1 | 97.7 | 52.2 | 38.2 | 43.9 
ID Ott bees oale aoe (6 KO ears onesie ener 144135 | Female -| 590 | 110 | 145 | 4.2 |104 53 39.4 | 45.1 
WD. ONS esis | Saece GOneEsaauesancoas 144139 |... do...| 550 | 100 | 150 | 4.2 | 97 51.4 | 36.5 | 41.2 
5 [CHOC oosoc0 |) ANOLE occucock5ccuc 143488 | Maie....| 442 | 75 | 123 | 1.7 | 78.7 | 42.7 | 31.4 | 34.9 
IDOE sa aee eal poe ae CO asa ene eee 143489 |....do..-.| 456 | 70 | 126 | 1.5 | 81 44.3 | 31.7 | 35.2 
WD) OSes ee asa Clo aeescere aes 143492 |....do...| 445 | 65 | 116 | 1.7 | 78.6 | 43.4 | 30.5 | 35 
IDO eee ee les oases OMS nn eae 143497 |....do...| 460 | 70 | 122 j..... 81.3 | 48.2 | 33.4 | 36.6 
ID) Oe S| ats eee GOt sess seeee eee 143493 | Female -} 470 | 80 | 125 | 1.8 | 81.5 | 44.7 | 32.8 | 37.7 
IDOsc5csso6slbesocG Ws cacagoccccacacal) WEY ON  Se solos So GO) WO Wea eee esl tlleas |heaeee 30.9 | 35.8 
Oe esti | ctane GOre hae ease entene 143495 |....do...| 455 | 75 | 114 | 1.9 | 88.3 | 44.5 | 34.4 | 37.7 
1D) Ofte ssc Ch hesceocsesaceeee 143496 |....do...| 490 | 85 | 128 | 2.2 | 84 44.7 | 32.4 | 37.3 
DOSS eyeee cll eeeee GON aes 143498 |....do...| 457 | 70 | 121 }..... 82.9 | 438.1 | 82.9 | 36.1 
DOR ee oleae GOs s ete aor aes 143499 '....do...' 470! 80! 124! 2.2! 84.7 | 42.7 | 31.6 
a Collector’s measurements. 
