AKT. 4 BIRDS OP THE MENTAWI GROUP RILEY 13 



riientami has the tarsus feathered almost to the base of the toes in 

 front, ^Yhile O. umbra has the lower part of the tarsus bare for about 

 a quarter of its length. 0. wrribra is a very distinct species not very 

 closely related to O. h. nnentakoi; on Engano, however, a larger form 

 of O. unibra occurs, somewhat darker on the back and lighter on the 

 lliroat. It has been named Otus umhra eiiganensis Riley."' 



Other localities represented by specimens of Otus hakkamoena in 

 the United States National Museum show great variation and there 

 are evidently a number of forms, but the material is not sufficient to 

 work them out at present. 



PSITTINUS CYANURUS PONTIUS Oberholser 



P.nttinus cymmrus pontius Oberholser, Smitlis. Misc. Coll , vol. 60, no. 7, 

 1912, p. 5 (South Pagi Id. ) .— Ch asen and Kloss, Ibis, 1926, p. 279. 



Three males and two females, Sipora ; three males, Siberut. 



Comparing specimens of the same age from Siberut and Sipora 

 with those of South Pagi, there seems to be little or no difference. 

 The majority of the South Pagi birds are more yellowish below, more 

 inclined to grayish on the mantle with crown not so deep a blue, but 

 this is due to age. 



Simalur Island is inhabited by the very distinct Psittinus abbotti 

 Richmond.^*' 



LORICULUS GALGULUS GALGULUS (Linnaeus) 



Psittacus galgulus Linnaeus, Syst. Nat., ed. 10, 1758, p. 103 (India). 

 Loriculus galgulus Chasen and Kloss, Ibis, 1926, p. 280. 



One male, one female, and one unsexed, Siberut; two males and 

 three females, Sipora. 



The specimens from Siberut and Sipora apparently do not differ 

 appreciably from birds from the mainland, Sumatra, and Borneo. 



Loriculus galgulus laniprochlorus Oberholser -^ from Nias is not 

 different enough to warrant recognition in my opinion. The type is 

 an exceptionally small bird, but a young male from the same island 

 is as large as many males from Sumatra and Borneo. It apparently 

 does not differ in color. The type oi L. g. doUchoptei'us Oberholser ^^ 

 from Engano can not be matched by any specimen before me as to 

 size or color. It is larger than L. g. galgulus^ lighter on the back, 

 more greenish rather than yellowish below ; and the forehead bluish 

 glaucous. It measures: Wing, 88; tail, 34; culmen from cere. 11.5. 

 A female from Sipora approaches it as to length of wing, but it is 

 the only specimen in quite an extensive series that does. The rac« 

 was founded upon a single female; it apparently is a valid form. 



'« Proc. Biol. Soc. Washington, vol. 40, 1927, p. 93. 



=0 Idem, vol. 13, 1902, p. 188. 



" Smitlis. Misc. Coll. vol. 60, no. 7, 1912, p. 5. 



