r 
EXPLANATION OF PLATES.* 
Page. 
Plate 1. Fako femoralis, Tehm. — Aplomado. — Dr. Hecrmann's specimen from New Mexico H 
2. Buteo elegans, Cassin. — Rcd-bellicd Hawk. — Adult. Dr. Heermann's specimen from California 28 
3. Bubo elegans, GASsift. — Young. No. 8524. New Mexico _ 28 
4. Fig. 1. Passerculus alaudiniis, Bom. — Larls Sparrow . 446 
Fig. 2. Peucaea cassinii, Baied. — Cassin's Finch, Dr. Woodliouse's type specimen 485 
5. Myiarchus mexicanus, Baird. — Asli-throated Flycatclier 179 
6. Tryngites ni/escens, Cabanis. — Buif-breasted Sandpiper. — San Antonio, Texas. (I'j'pe of Dr. Hecr- 
mann's species Aclidurus naevius) 739 
7. Slrepsilas mdanocephala, Viqoes. — Blaclv-headed Turnstone. — California 702 
8. Podiceps californkus, Heermann. — California Grebe. — California. From Dr. Ileermann's type spe- 
cimen. (Closely related to, if not the young of Podiceps aurilus, L.) . 89G 
9. Podylimbiis podiceps, Lawr. — Carolina Grebe. — Young. California. Fiom the type of Podylimbusline- 
aius, Heermann 898 
10. Graeulu^ penicillaius, Bon A.V. — Brandt's Cormorant. — Farallone Islands. Dr. Heermann 880 
11. Falco nigriceps, Cassin. — Blacli-Capped Hawk. — Shoal water Bay 8 
12. Buteo swainsoni, Bonap. — Swainson's Buzzard. — Specimens from Captain Beckwith's collection. 
Utah 19 
13. Buteo swainsoni, Bonap. — More adult plumage than the preceding. Captain Beckwith. Utah 19 
14. Buteo calurus, Cassin. — Black Red-tail Hawk. — 8527. Coppermines of New Mexico. (Now in 
museum of Philadelphia Academy.) 26 
15. Fig. 1. Buteo fuliginosus, Sclater. — Dusky Hawk.— New Mexico. Dr. Henry. Museum Philadelphia 
Academy. (Species described in Pr. Zool. Soc, London, 1858, 356.) 
Fig. 2. Buteo oxypterus, Cassin. — Sharp-winged Hawk. — Same locality and collector as the preceding. Mu- 
seum Philadelphia Academy. 
N. B. These two figures probably represent adult and young of the same species, the latter name 
having priority 30 
16. Buteo cooperi, C\ssm. — Cooper's Hawk. — No. 8525. Santa Clara county, California 31 
17. Chordeiles henryi, Cassin. — Western Night Hawk. — 0698. Female. Upper Rio Grande. (The bird 
is represented of too large size by the figure) 153 
18. Fig. 1. Panyptila melanoleuca, Baib.!). — White-throated Swift. — No. 6017. Bill Williams's Fork 141 
Fig. 2. Cliadura vauxii, Dekat. — Oregon Swift. Type specimen in Museum Philadelphia Academy 145 
19. AtXhis coslae, Reich. — Rulfed Humming Bird. — Male and female, Nos. 6073, 6074. Bill AVilliams's 
Fork, New Mexico 138 
20. Corvm cacalott, Wagler. — Colorado Raven. — 6855. Colorado Desert 663 
21. Corvus carnivorm, Bahtrah. — American Raven 560 
* Where not otherwise mentioned, the specimens figured arc to be considered as in the museum of the Smithsonian Institu- 
tion, and the numbers refer to the Smithsonian record of birds. The original of each figure is indicated as far as can now 
be ascertained. 
