KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 57. N:0 2- 



After a careful examination of the literature concerning the Genus Nycticebus 

 I ha ve come to the conclusion that Nycticebus cinereus M. Edw. is probably only based 

 on individual variation and that the main form is Nycticebus coucang Boddaert. of 

 which Nycticebus bengalensis E. Geoffr. is only a synonymus. 



Skull measurements 



Greatest length 68,0 mm. 



Basal length 59,5 » 



Palatal length 23,o 



Zygomatic width 40,0 



Least interorbital width 5,0 » 



Greatest breadth of brain case . . . 34,1 » 

 Length from palate to lower margin I 



of foramen magnum 33,7 » 



Breadth of basioccipilale at its ante- 



rior end 5,3 » 



Length of nasals mesially 19,2 » 



Breadth at middle of orbits .... 43,0 



Length of upper molar series ... 19,0 » 



03,8 mm. 



55.1 » 

 22,0 » 

 41,3 » 



5,0 » 



30.8 » 



31,7 » 



4,3 » 



18,0 » 



39.9 » 



18.2 » 



Pteropus sp. 



The following species and subspecies of the Genus Pteropus are recorded by Dr. 

 K. Andersen from Siarn (Andersen, Cat. Chiroptera Brit. Mus. Vol. I. 1912.) 



Pteropus lylei K. And. from the Bangkok region and Cochin China, Pteropus in- 

 termedius K. And. the range of which includes Tenasserim and Peninsular Siarn and 

 Pteropus hypomelanus condorensis Pet. which has been obtained at Pulu Condor, Cam- 

 bodia and Siarn. 



In Bangkok I several times observed Flying Foxes but as no specimens were coll- 

 ected, I am unable to ascertain what species they belonged to, but it was most probably 

 Pteropus lylei K. And. 



Cynopterus brachyotis brachyotis. S. Mull. 



J* Koh Lak, Siamese Malaya il / 2 1915 (in aleohol). — Forearm = 64,5 mm.: Ear = 16,5 mm. — 

 $ Koh Lak 21 / 2 1915. — Forearm = 63, o mm. 



Both this and the next species were rather common at Koh Lak and its neighbour- 

 hood. They were generally frequenting some fruitbearing trees just outside the house 

 I lived in and were especially common during moonlight nights. During daytime I never 

 found them. Their flight is rather swift, but as they generally fly fairly low they are 

 easily captured. When feeding they were always hanging in the ordinary way keeping 

 the fruit between the thumbs and the index finger. 



K. Sv. Vet. Akad. Handl. Band 57. N:o 2. 2 



