76 HIRUNDINIDvE. 



sects, and for the most part construct their nests of 

 mud or other firm materials. 



GENUS XLL— CHiETURA mihi. 



Rostrum mandibuld itiferiore 

 apice recta. 



Ala longissimas. 



Cauda brevissima; rectrices 

 apice, subulatae, acutae. 



Beak with the lower man- 

 dible straight at the tip. 



Wings very long. 



Tail very short ; its feathers 

 subulated and acute at the 

 tip. 



Hirundo Auctorum. — Cypselus., pars. Tennn. 



Sp. 1 . Ch. pelasgia. 



Hirundo pelasgia. Steph. v. x. 128. — North America. 

 Sp. 2. Ch. Martinicana. 



HiriJnda acuta. Steph. v. x. I3l.pl. 15. — West Indies 

 Sp. 3. Ch. pacifica. 



Hirundo pacifica. Steph. v. x. 132. — New Holland. 

 Sp. 4. Ch. australis. 



Hirundo caudacuta. Steph. v. x. 133. — New South Wales. 



Sp. 5. Ch. fusca. 



Hirundo fusca. Steph, v. x. 133. ? 



Sp. 6. Ch. collaris. 



Ch. obscure-nigro, torque albo. 



Dull-black Cheetura with a white collar. 



Cypselus collaris. Pr. Max. Trav. i. 63 — Tcmm. PI. Col. 195. 



Inhabits Brazil. Length six inches and a half 

 from the tip of the beak to that of the tail, but to 

 the end of the wings nine inches : the prevailing 

 colour of the plumage is a sooty black, with the wings 

 and head rather lightest : on the back part of the 

 neck is a white collar, narrow on the sides, but broader 

 on the nape and on the upper part of the breast : the 



