74 PROCEEDINGS OF THE ACADEMY OF 



6. MYiARcntrs lawkencii. 



Tyrannula lawrencii, Gir., 16 Sp. Tex. B. pi. 2. 



Myiarchus lawrencii, Baird, B. K A. 181, pi. 47, f. 3. Bel., P. Z. S. 



1859, 366, 384. Id. et Salv., Ibis, 1859, 121, 440. Taylor, ibid. 114. 



Lawr., A. L. N. Y. ix. 1868, 113. Id., ibid. ix. 1869, 204. 

 Blacicus lawrencii, Bd., B. N. A. 182. 



Pyroce/phalus {Myiarchus) lawrencii, Gr., H.-L. No. 5525 (cum 5529). 

 Myiarchus mcxicanus, Scl., P. Z. S. 1856, 296. 

 Myiarchus rufomarginatus, Cab., M. H. ii. 73. 

 Myiarchus nigricapilhis, "Cab. MSS." (e specim. costaricensibns ; cf. 



J. f. O. 1861, 249), apnd Scl., C. A. B. 233. Lawr., A. L. K Y. ix. 



1868, 113 ; recte haesitat ! 



M. inter rninores, rostro lato clepresso; fusco-olivaceus, pileo 

 statimfuscescente, gulacinerea, ventre statimflavissirno; remigilms 

 tectricibusque et extus et intus rufomarginatis,rectricibus omnibus 

 semper extus, crebrissime necnon intus rufomarginatis. Long, 

 tot. 6-6.75; alae et caudse 3.00-3.33, rostri .62-.70, tarsi .65-.7S. 



Habitat. Mexico et Amer. Cent. Texas ? (auct. Giraucl.) N". 

 Leone (Coach, apud Baird). Colima (Xantiis). Mazatlan 

 (Grayson). Orizava, Tehuantepec (Sumichrast). Guatemala 

 (Salvin et ah). Merida (Schott). Grecia, Barranca. Angostura 

 (Carmiol, Frantzius). 



Obs. With much the same strong olive, clear ash, and rich 

 yellow that characterize crinitus, lawrencii is distinguished on 

 sight by its smaller size ; pileum generally dark, in strong contrast 

 to the back ; wing coverts and inner secondaries edged with much 

 the same rufous as the primaries are (as in validus), and very 

 narrow rufous edging of the tail feathers, often wanting altogether 

 on the inner webs, and almost always stronger on the outer webs 

 than on the inner ones. In young birds the edging of the inner 

 webs is usually very noticeable, but it is never, so far as I have 

 seen, so broad as is usually the case with the associated continental 

 species and varieties ; never half the breadth of the vane. Further- 

 more, the bill of lawrencii departs from the thick, deep, heavy style 

 of the larger Myiarchi, and is broad and flat nearly as in the smaller 

 olivaceous flycatchers, such as Contopus and Empidonax. It varies 

 much, as usual, in precise shape, but is generally just about half 

 its own length broad at the nostrils. 



Mr. Lawrence has already very properly called attention to the 

 fact, that the supposed M. nigricapilhis of Dr. Cabanis offers no 

 tangible specific characters ; while for myself I cannot make out 



[July 16, 



