160 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO STAM. 
ist die Grésse betrachtlicher als bei den benachbarten Formen C. coronoides andaman- 
ensis und C. coronoides colonorum. » ; 
In the Siamese specimen the feathers of the back have rather broad terminal violet 
bands which everywhere are clearly visible. The bases of the feathers are grey though 
almost white on the lower back. The bill is very large and stout, measuring 64 mm. In 
length and 23 mm. in height. 
Of course a single specimen is not enough for creating a new race and therefore 
and until more material has been available I think I am justified to refer the Siamese 
Crows, hitherto known under the name of Corvus macrorhynchus Wacu. to the Hainan 
form 
Corvus coronoides hainanus STREs. 
Explanation of plates. 
Plate 1. 
Sketch Map of Siam. 
Plate 2. 
Fig. 1. Lanius hypoleucus siamensis, Gyupenst. @. °/5 Nat. size. 
Fig. 2. Gerygone griseus, Gyupenst. 2. %/s Nat. size. 
Fig. 3. Brachylophus chlorolophoides, Gytpenst. ¢. ?/3 Nat. size. 
Plate 3. 
Fig. 1. Sphenocercus pseudo-crocopus, Gyupenst. @. 3/2 Nat. size. 
Fig. 2. Picus canus hessei, Gyuprnst. . 3/2 Nat. size. 
Fig. 3. Picus canus hesset, Gyupenst. 2. 1/5 Nat. size. 
Plate 4. 
Fig. 1. Pines on the top of one of the Koon Tan mountains, Northern Siam. 
Fig. 2. Forest near Pa Hing, Northern Siam. 
Fig. 3. View from one of the Koon Tan mountains. 
Plate 5. 
_ 
Fig. In the rapids of the Meh Ping river. 
Fig. 2. View of the Koon Tan mountains. 
Tryckt den 19 oktober 1916. 
Uppsala 1916. Almqvist & Wiksells Boktryckeri-A-B. 
