BIRDS OF TENASSERIM. 49 



Males. — Length, 4-62 to 5-0, expanse, 105 to 1137 ; tail 

 from vent, 20 to 2-62 ; wing, 4-45 to 4'75 ; tarsus, 0*3 to 0*37 ; 

 bill from gape, 05 to 0*45 ; weight, 0'3 oz. 



Females. — Length, 4-62 to 5'0; expanse, 10-12 to ll'O ; tail 

 from vent, 2-0 to 25 ; wing, 4-1 to 4'8; tarsus, 0-3 to 0-35 -, 

 bill from gape, 0'5 to 052 ; weight, 0-37 to 0*38 oz. 



Legs and feet dark purple ; bill black ; irides deep brown. 



103 bis. — Collocalia linchi, Horsf. Descr. S. F., I, 

 296 ; II., 157. 



Blyth says (B. of B., p. 85) that this occurs in the Mergui 

 Archipelago. It very probably does, but not on Mergui Island 

 itself, nor on any of the small islands near it. 



Lord Tweeddale again repeats, loc. ck., that this is the true 

 fuciphaga, Thun. It seems to me that where a description is 

 like Thunberg's (quoted S. F., I., 294) clear and explicit we must 

 go by it, and to my mind the "corpus supra atrum, vixmtens," 

 and the <f cauda rotundata, supra infraque atra," of Thunberg's 

 description, are perfectly irreconcilable with linchi, and either 

 Thunberg's bird was distinct, or his description was so directly 

 at variance on important points with fact, that his name must 

 be rejected altogether. 



103 ter.— Collocalia innominata, Hume (6.) Descr 



S. F, I., 294. 



Mergui; Bankasoon. 



Confined to the southern portions of the province. 



[This species appears at Mergui and southwards, from time to 

 time, in moderately large numbers, (though nothing like those 

 in which spodiopygia occurs,) hawking about along the coast, up 

 estuaries, along the course of creeks and rivers, over paddy 

 fields, and sometimes a little way inland. 



During the day they usually keep high up and out of shot, 

 but descend lower in the evening. They fly swiftly, and are not 

 always easy to shoot. 



They come and go, and probably breed on some of the islands 

 of the Mergui Archipelago. At the Andamans 1 only saw a 

 single specimen. Here, at the extreme south of Teuasserim, 

 they are not rare. — W. D.] 



In my list, S. F., IV., 223, 1 mentioned a Collocalia under the 

 name of Collocalia maxima. I had then only two specimens from 

 Tenasserim, adults, and did not recognize their identity with 

 C. innominata, which was described, as it now appears, from an 



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