NATURAL SCIENCES OF PHILADELPHIA. 95 



wing coverts and secondaries are still mottled, and the tail is a littled marbled, 

 but "most of the feathers are clear plumbeous. On the breast, feathers of this 

 latter color are interspersed with the wavy gray ones. While the faint ferru- 

 gineoas flush of the sides is retained, there are apparent the definite stripes 

 of the adult. The crest is now an inch long, but still straight, not recurved, 

 and rather brown than black. The bill is quite black, and the feet dark 

 colored. At this season the peculiar head markings begin to appear, so that 

 the sexual features are quite apparent. 



The early age at which the crest begins to be apparent is surprising. Two 

 or three feathers longer than the rest very plainly indicate it in chicks only a 

 week or two old. But it does not become black and expanded and recurved 

 at the tip, till the bird is full grown and has completed the moult. 



Adult. Iris clear brown. Bill black. Legs and feet brown, sometimes 

 with a livid bluish tinge. 



(189.) Callipepla squamata (Vig.) Gray. 



From the Valley of the Gila and Lower Colorado, as well as that of the Rio 

 Grande. Not detected as far north as Whipple. 



190. Cyrtonyx massena (Less.) Gould. 



I had frequently been informed of the occurrence of this species at Fort 

 Whipple, but I never met with it on but two occasions, when an adult male 

 and female were procured. It is doubtless a resident, though rare species. 



No. 1586. $. Oct. 11, 1865. Length 9-00; extent 17 00; wing 4-80; 

 tail 2-00; bill -60; tarsus 1-20. Upper mandible dull reddish horn; lower 

 bluish white. Mouth whitish flesh color. Legs, feet and claws livid white, 

 with a somewhat yellowish tinge posteriorly. Iris brownish olive. The cut- 

 edges of the lower mandible are doubly dentated near their end. 



[Note. Many of the following Water Birds are really identified with the 

 Whipple series, but only those actually seen by me in that locality are given 

 with uninclosed number.] 



GRUID^E. 



(191.) Grus canadensis (L.) Temm. 



Abundant on the Colorado and Gila Rivers. 



ARDEID^E. 



(192.) Garzetta candidissima (Gm.) Bon. 



Very abundant throughout the Valley of the Colorado. 



(193.) Herodias egretta (Gm.) Gray. 



Abundant along the Colorado. Very probably tbe large variety californica 

 (Baird B. N. A. p. 667,) may also be found within the limits of the Territory. 



(194.) Ardea herodias Linn. 



Exceedingly abundant along the Colorado River. The nests of this species 

 are often seen on some ledge of rock projecting from the precipitous cliffs 

 which are covered with innumerable nests of Petrochelidon lunifrons. 



(195.) Ardetta exilis (Gm.) Gray. 



Generally distributed on the streams and cienegas of the Territory. Common 

 on the Colorado. 



(196.) Botaurds lentiginos0S (Mont.) Steph. 

 Throughout the Territory. Common. 



(197.) Butorides virescens (L.) Steph. 



Very numerous along the Colorado and other streams of the Territory- 



(198.) Nyctiardea Gardeni (Gm.) Baird. 



Generally distributed ; nowhere very numerous. 



1866.] 



