486 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



otters in the U. S. National Museum is quite variable. The above 

 specimen and one from Great Karimon Island, Cat. No. 122840, 

 U.S.N.M., have remarkably large and heavy teeth as compared with a 

 skull from Tapanuli Bay, Sumatra, and a skull from northern 

 Borneo. A very youiig, skull from Pulo Sebang, Rhio Linga Archi- 

 pelago, has small teeth about like those of the Sumatran skull. The 

 significance of this variation in the size of teeth is not clear. It is 

 not sexual. A similar variation in the shape of the ascending ramus 

 of the mandible is seen, no two of them being exactly alike. See 

 Plate 39. 



Measurements. — Head and body, 495 mm.; tail, 290; hind foot, 95; 

 weight, G pounds (2.7 kilos); basal length of skull, 82; zygomatic 

 width, 57.5; maxillary tooth row (alveoli), 29. 



'■' The morning I left Setoko the natives brought me a fine female 

 chnvless otter which they had hit over the head with a paddle wdiile 

 SAvimming across the s'lat | strait]. One day a large otter swam 

 across the slat close ahead of the schooner, but my men were too slow 

 for him. * * * They doubtless feed upon shell fish, among other 

 things, and I know the}^ eat crabs." W. L. Abbott. 



ARCTOGALIDIA FUSCA Miller. 



1906. Arctogalidia fusca Miller. Proc. U. S. Nat. Mns., XXXI, No. 1485, 

 p. 269, Sept. 11, 1906. (Type-locality, I'ulo Kimdiir.) 



An immature male from Pulo Bulan, Cat. No. 144420, U.S.N.M., 

 is indistinguishable from Arctogalidia fusca Miller. 



External measurements by collector: Head and body, 475 mm.; 

 tail, 545; hind foot, 90; weight, 1.(5 kilos (3^ pounds). Cranial meas- 

 urements: Greatest length, 99.4; basal length, 93.5; zygomatic 

 breadth, 53: ])ostorbital constriction, 19; Avidth of brain-case above 

 roots of zygomata, 33; maxillary tooth row (alveoli), 34.0. 



GALEOPTERUS CHOMBOLIS, new species. 



Type.— Skm and skull of adult female. Cat. No. 144375, U.S.N.M., 

 collected on Pulo eJombol, Rhio-Linga Archipelago, March 3, 1907, by 

 Dr. W. L. Abbott. Original number, 5091. 



Diagnostic characters. — A medium-sized member of the genus, 

 closel}' related to Oaleopterus tuancus (Miller), « but having Avider 

 zygomata, more inflated mastoids, and smaller first upper incisors. 



Color. — The color of the type and Iavo adult female paratypes 

 differs in no essential respects from that of flying-lemurs in the gray 

 pelage phase from the Malay Peninsula, being, perhaps, a trifle paler 

 in general color effect. Another paratype, an adult male, is in the 

 " red " phase, having the general color effect of cinnamon-rufous, 



" Smitlis. Misc. Coll., X1A\ p. 53, Nov. 6, 1903. 



