NATURAL SCIENCES OF PHILADELPHIA. 303 



detailed description of this little known species may be of interest : Above 

 yellowish ash transversely barred with black. Chin, throat, and sides of head 

 clear ash ; under parts white : a broad pectoral crescent, and rounded spots on 

 remaining under parts black.- Top of head light brown. Shafts of wing 

 and tail feathers gamboge yellow. Tail black ; the basal portion yellow ; the 

 outer feathers uniformly black on the exposed terminal half, including the 

 shafts. No red on the nape. Bill black. Iris light brown. Male with a 

 broad, red moustache. No trace of a moustache in the female. 

 Length of male about 11-00 ; wing 5 - 50 ; tail 4'50 ; bill above 1*50. 



6. Geococcyx californianus, Baird. 



7. Chokdeiles texensis, Lawrence. 



8. Myiarchus mexicanus, Baird. This bird does not appear exactly the 

 same with the species of the United States and Mexico, although I can see no 

 other difference than a rather stouter bill. This, however, appears to be a 

 constant character, and may one day cause its separation as a species (M. 

 pertinax, Baird.) 



9. Sayornis nigricans, Bonaparte. 



10. Empidonax obscuros, Baird. 



11. Hirundo thalassina, Swainson. Much smaller than specimens from 

 Oregon. 



12. Progne purpurea, Boie. 



13. Phaiuopepla nitens, Sclater. 



14. Mimus polyglottus, Boie. The specimens do not exhibit the same 

 elongation of the tail as remarked in skins from Upper California. The tail 

 appears, however, a little longer than in specimens from the Atlantic States. 



15. Harporhynchus cinereus, Xantus. This species is very similar in 

 color and markings to Mimus montanus, although rather larger, with a con- 

 siderably longer and more curved bill. It is nearly as large as H. longirostris, 

 the bill of about the same length, though more curved. It differs from it, 

 however, in the grayish plumage above, in the whitish tips to the tail, and in 

 having short sagittate spots beneath, instead of elongated black ones. Besides 

 the longer bill and other features, it lacks the rufous tinge of upper parts seen 

 in H. rufus. It is smaller than H. curvirostris, the spots beneath much more 

 distinct and sagittate. They are darker than the back, instead of being of the 

 same color. 



As already remarked, the shade of the coloration and pattern of marking 

 are almost precisely those of Mimus montanus, while the bill is much like that 

 of H. longirostris. 



16. CampyI/Orhynchps affinis, Xantus. This species is about the size of 

 C. brunneicapillus, and resembles it closely in general appearance. The com- 

 parison of an extensive series of both will, however, exhibit unmistakable 

 differences. 



The anal region and thighs of brunneicapillus have a strongly fulvous ten- 

 dency, (nearly wanting in qffinis,) and the spots beneath are much smaller, 

 in fact, scarcely more than shaft lines ; on the throat and jugulum, on the 

 contrary, the spots occupy almost the entire breadth of the feather, very con- 

 spicuously larger than the others. In G. affinis the spots beneath are very 

 nearly of the same size, being larger on the belly and smaller on the throat 

 than in the other species : the latter but little the larger. 



The lateral tail feathers in brunneicapillus are black, all with a subterminal 

 band of white : the external feather has both webs banded with white 

 throughout. The next has a trace of a second terminal band, and there are 



1859.] 22 



