166 CATALOGUE OF MEXICAN ANIMALS. 



referred to, and undoubtedly represent a distinct species, or at least 

 subspecies, which may be characterized as follows: 



Micratliene graysoni Ridgvr. — Socorro Elf Owl.* 



Micrathene ichitneyi Grayson & Lawr., Proc. Boston Soc, N. H., 1871, 300; 

 Mem. Bost. Soc, ii, pt. iii, No. ii, 1874, 297.— B. B. & E., Hist. N. 

 Am. B. iii, 1874, 87 (part). 



Sp. Char. — Similar to M. rchitneyi, but much browner, the plumage 

 without any superficial gray, and the light rusty tail-bands nearly as 

 broad as the brown interspaces. 



Adult $ (No, 49,r>78, Socorro I., W. Mexico ; Col. A. J. Grayson) : 

 Above umber brown, the forehead and crown marked with rather large 

 guttate spots of tawny; back, rump, and scapulars indistinctly spotted 

 and barred with the same, but none of the markings well defined ; a dis- 

 tinct but much broken collar of white across the nape ; outer webs of exte- 

 rior row of scapulars mostly white; and outer webs of the middle and 

 greater wing-coverts with large oval terminal spots of the same. Wings 

 much spotted and barred with light tawny (inclining to rusty on the 

 lesser covert region), these markings on the remiges in the form of large 

 semi oval spots, arranged in transverse rows, or bands. Tail crossed 

 by 6 broad barst of pale tawny (inclining to white on inner web), these 

 bars nearly as broad as the brown interspaces, but all interrupted along 

 the middle line of each feather. Eyebrows white, also chin and sides 

 of throat. Prevailing color of lower parts rusty brown or tawny, ir- 

 regularly barred or vermiculated with dusky, but the prevalent rusty 

 coloring much broken medially and posteriorly with white, in the form 

 of ragged blotches ; under tail-coverts with white prevailing. Wing, 

 4.25;' tail, 2.20; culmen, .35; tarsus, .75. 



Adult " 9 " (No. 50,705, Socorro I. ; Col. A. J. Grayson) : Almost ex- 

 actly like the male, as described above, but rusty coloring rather more 

 pronounced, especially on throat and sides of the head. Wing, 4,05 ; 

 tail, 1.90 ; culmen, .35 ; tarsus, .70. — R. R.] 



Fam. FALCONID^. 



184. Circus hudsonius (Liau.). 



Falco hudsonius, Linn., Syst. Nat., ed. 12, I, p. 128. 



Circus hudsonius, Vifill., Ois. Am., Sept., I, 1807, p. 36, pi. ix. 



Vulg. — Gavilan tonto aplomado, Gav. tonto cafe. 

 Eab. — State of Puebla. Puebla, No. 335 S ; Llano de Chapulco, No. 

 220 $ , November, 226a 9 , December. 



185. Asturina plagiata Schlegel. 



Antarina "plagiata, Scblegel, Mus. Pays-Bas, Asturinae, 1862, p. 1. 



Vulg. — -Halcon pinto de cola larga, Gavilan. 



* Micrathene graysoni Ridgw. Auk, iii, July, 1886, 333. 



tThe first and last bars are narrowest, one being terminal, tbe otber concealed by 

 the upper coverts. 



