( "^"1 ) 



liHi. Cheramoeca leucosteruum mai'ngli subsp. u. 



Western Black-and-white Swallow. 



Mathews, Handlist No. 430 (pars). 



Differs from C. I. leacostcrnam in lieing' much paler on the head and mantle. 



Type: Fitzroy River, North-We.st Australia, No. 9144. 



Range : West Australia. 



Genus FETBOCHELIDON. 



Peti-rwheVidijii Cabauis, .1/'/^. Urine, vol. i, p. 47. 18.51. 



Type (by subs, desig.) : P. mrli HOfjaster (Swainson). 



'ilT. Petrochelidou nigricans nigricans. 



llinmdn iti:in<yiiis Vicillot, .Vwcb. Diet, d' Uisl. N>U. vol. xiv, p. 523. 1817 : New South Wales. 

 Synonyms : 



Hiniitilo pi/irliniiol'i Vigors aad Horsfield, 1 mim. Linn. Soc. (Lmid.) vol. .w. p. lOO. 182(i : Xew 



South Wales. 

 Cnllocalia iirhorea Gould, Birds Antli: vol. ii. pi. 14. 184S : New Sjuth Wales. 



Tree Martin. 



Mathews, Handlist No. 431 (pars). 



Range : Queensland, New South Wales, Victoria. 



018. Petrochelidon nigricans australis. 



Uiiiinihi iiijirliiiuuln. aiiatralis Temminok and Scblegul, Fmiii. Ja/tmi. Ai-ca p. 35. 1850 : Tusmauia. 



Tasmanian Tree Martin. 

 Mathews, Handlist No. 431 (pars). 

 Range : Tasmania. 



619. Petrochelidon nigricans neglecta subsi). n. 



Western Tree Martin. 

 Mathews, Handlist No. 431 (pars). 



Differs iVmn /'. n. nii/ricans in its slightly smaller size and duller coloration 

 above, especially on head and back. 



Type : North- West Australia, No. 9145. 

 Range : North-West Australia. 



•)-o. Petrochelidon nigricans distinguenda snbsp. n. 



Murchison Tree Martin. 



Mathews, Handlist No. 431 (pars). 



Differs from /'. n. niyricans in its smaller si/.e, and t'nmi /'. //. neijlerta in its 

 niiich duller coloration above, the brilliant steel-blue being obscured by brown, and 

 its paler under-surface, especially on the Hanks. 



Type : West Australia (East Murchison), No. 3892. 



Range : West Australia. 



