52 



BULLETIN 159, UNITED STATES NATIONAL MUSEUM 



exposed culmen, 7.5-9 (8.4); height of bill at base, 3-3.5 (3.4); tarsus, 

 10; middle toe without claw, 10. 



Of the two examples obtained in the Natuna Islands by Doctor 

 Abbott, one, the type, was taken on Pulo Seraia, where a number of 

 others were seen along the shore. The other, a juvenal female, col- 

 lected on Bunguran Island, differs very little in color from the adult of 

 the same sex. The latter, taken on June 26, 1900, shows evidences of 

 molt along the contour feathers, and is in the midst of the molt of both 

 wing and tail feathers. Measurements of these two birds are given 

 in Table 13. 



Birds from Borneo are apparently the same as those from the 

 Natuna Islands, and they have been considered together in making 

 comparisons of this new race. From Hypurolepis javanica abbotti *° 

 of the Anamba Islands, it differs most obviously in the duller, more 

 brownish, laterally lighter, medially less whitish, posterior lower parts. 



Table 13. — Measurements of specimens of Hypurolepis javanica mesata 



' Measured in the flesh by the collector. 



I Type. 



The 7 subspecies of Hypurolepis javanica that seem to be recog- 

 nizable are as below: 



1. Hypurolepis javanica javanica (Sparrman). 



Hirundo javanica Sparrman, Museum Carlson ianum, fasc. 4, no. C, pi. 100, 

 1789. ("in Java, sub terra.") 



Geographic distribution. — Java. 



2. Hypurolepis javanica mesata Oberholser. 

 Hypurolepis javanica mesata Oberholser, antea, p. 51. 



Geographic distribution. — Borneo and the Natuna Islands. 



3. Hypurolepis javanica hypolampra Oberholser. 



Hypurolepis javanica hypolampra Oberholser, Journ. Washington Acad. Sci., 

 vol. 16, no. 19, p. 515, Nov. 18, 1926. ("Lafau, Nias Island, Barussan 

 Islands, western Sumatra,") 



Geographic distribution. — Island of Nias, Sumatra, and probably 

 also the southern Malay Peninsula. 



•• Oberholser, U. S. Nat. Mus. Bull. 98, p. 32, June 30, 1917. 



