1906.] NATURAL SCIENCES OF PHILADELPHIA. 201 



and in duller, less well-defined rump band, the feathers of which have 

 much more conspicuous dark shaft lines. 



Birds from the southern part of the Malay Peninsula — both eastern 

 and western sides— as well as from Pulo Tioman, off the east coast, 

 average larger than those from the Andaman and Nicobar Islands; 

 but this is apparently too slight and inconstant, in the absence of any 

 accompanying color difference, to warrant recognition by name. In 

 C. f. inexpectata as in other forms there is considerable individual color 

 variation, evident in this case chiefly on the lower parts and the light 

 rump band. The single specimen of inexpectata recorded by Dr. Har- 

 tert ^^ from Amherst, Tenasserim, is possibly rather to be referred to 

 Collocalia f. germani, for it is more probably an unusually dark example 

 of the latter, whose home is near by, than a stray from the far-off south- 

 ern Andaman Islands. 



Collocalia franoica germani Oustalet. 



Collocalia germani Oustalet, Bull. Soc. Philom. Paris, 1876, pp. 1-3. 

 Collocalia francica, subsp. /3. merguiensis Hartert, Cat. Birds Brit. Mus., 

 XVI, 1892, p. 506 (Mergui, Tenasserim). 



Chars, subsp. — Similar to Collocalia francica francica, but larger; 

 upper surface more glossed with metallic greenish; light rump band 

 with more evident blackish shaft lines; posterior lower surface darker, 

 and with more conspicuous dark shaft lines. 



Wing, 115-121.5 (average, 118.3); tail, 49-52.5 (average, 51.3); 

 exposed culmen, 4.5-5 (average, 4.9); tarsus, 9-11 (average, 10) mm.^^ 



Type locality. — Condore Island, China Sea, off the southeastern 

 coast of Cochin China. 



Geographical distribution. — Mergui Archipelago; Tenasserim; Malay 

 Peninsula south to Lower Siam; Condore Island, Cochin China; Philip- 

 pine Islands. 



Like many of the forms of Collocalia, this race is, on account of 

 individual variation, difficult to determine satisfactorily without a 

 sufficient series, but it is nevertheless worthy of recognition. It is 

 distinguishable from Collocalia f. spodiopygia by its lighter, more 

 greenish glossy upper surface, more metallic bluish and purplish sheen 

 on wings and tail; well-defined blackish shaft streaks on the feathers 

 of the light rump band ; paler lower parts, with dark shaft streaks on 

 abdomen; and somewhat larger size. From Collocalia f. townsendi it 

 may be separated by rather greater size; lighter, more brownish upper 



3« Cat. Birds Brit. Mus., XVI, 1892, p. 505; Tierreich, I, 1897, p. 69. 

 ^' Ten specimens. 



