no. 2088. RACES OF CAPRIMULGUS MACRURUS— OBERHOLSER. 589 



wing-quills and contour feathers; and another bird from the same 

 locality (No. 170441, U.S.N.M.), taken, May 19, 1899, is in the same 

 condition. From these it may be inferred that the species, at least 

 in adult stage, has two molts per year. Another Singapore bird (No. 

 170442, U.S.N.M.), taken, May 26, 1899, is just molting into the 

 juvenal plumage. 



As is the case with many goatsuckers there are two color phases in 

 Caprimulgus macrurus. In one of these, which appears to be rather 

 unusual, if not rare, the entire plumage is strongly rufescent, the 

 abdomen particularly being more deeply ochraceous. In the other, 

 which seems to be the normal phase, the tone of the plumage is very 

 grayish throughout. While to a certain extent this rufescent or 

 ochraceous tinge of the plumage is, in some cases, a subspecific char- 

 acter, in other cases it varies so markedly in examples of the same 

 race that it forms a definite color phase. Other individual variations 

 are found in the size of the white or buff tips of the outer tail-feathers, 

 which light tips are either with or without dusky mottling on the 

 outer webs; the coarseness of the bars and vermiculations on the 

 anterior lower parts; and also, of course, in the size and shape of the 

 light and dark mottlings on upper parts, wings, and tail. 



The characters of value in subspecific distinctions he chiefly in size 

 (principally length of wing) ; the depth of general color tone of upper 

 parts ; the width and arrangement of the dark streaks on the pileum ; 

 the conspicuousness of the dark markings on the upper surface; and 

 the size of the white spot on the primaries. 



CAPRIMULGUS MACRURUS MACRURUS Horsfield. 



Caprimulgus macrurus Horsfield, Trans. Linn. Soc. Lond., vol. 13, 1821, p. 142 



(Java). 

 Caprimulgus macrourus Gould, Birds Australia, vol. 2, 1848, pi. 9 (nom. emend, pro 



Caprimulgus macrurus Horsfield). 

 Caprimulgus salvadorii Sharpe, Proc. Zool. Soc. Lond., 1875, p. 99, pi. 22, fig. 1 



(Labuan Island, northern Borneo). 



Chars, subsp. — Size small and colors dark. 



Measurements. — Male: 1 Wing, 170-188 (average, 179.2) mm.; tail, 

 131.5-147 (137.9); exposed culmen, 8.7-11 (9.7); tarsus, 16-17.5 

 (16.6). 



Female: 2 Wing, 178-179 (average, 178.5) mm.; tail, 130-130.5 

 (130.3); exposed culmen, 9-10.2 (9.6); tarsus, 16-16.5 (16.3). 



Type-locality. — Java. 

 ' Geographical distribution. — Java; Borneo; Labuan Island; Pala- 

 wan and Calamianes islands in the Philippines; also probably the 

 islands of Celebes, 3 Saleyer, 3 Djampea, 3 Lombok, 3 Sumbawa, 3 and 

 Timor. 3 



1 Nine specimens, from Java, Borneo, and the Philippine Islands. 



2 Two specimens, from Java and Borneo. 



8 No specimens examined from this locality. 



