44 BtTLLETlN 50, UiSTITED STATES NATIONAL MUSEUM. 



HYLOCICHLA GUTTATA SLEVENI (Grinnell). 

 MONTEEY HERMIT THRUSH. 



Similar to H. g. guttata, but paler and grayer, and decidedly smaller. 

 Adult male (average measurements). — Wing, 84; tail, 71.'* 

 Adult females (average measurements). — Wing, 81; tail, 69." 

 "Breeds in the cloudy coast belt of California, from southern Monte- 

 rey County northward, locally, at least, to Sonoma County;"^ during 

 migration southward to Los Angeles County (Pasadena, April) and 

 to Santa Margarita Island, Lower California (February) ; Arizona 

 (Tucson, April 6; Huachuca Mountains, April), and Sonora (Campos, 

 February 3). 



I am unable to give a more satisfactory diagnosis of this form, for 

 the reason that no authentic specimens are available. A female in 

 Mr. Brewster's collection (no. 20167) from Campos, Sonora (February 

 3, 1887) seems to belong to it; at least this specimen, while having the 

 pale dull grayish coloration of H. g. sequoiensis is smaller than any 

 specimen of either H. g. guttata or H. g. nana with which I have been 

 able to compare it, its measurements being as follows: Wing, 82.5; 

 tail, 63; exposed culmen, 13.5; tarsus, 28; middle toe, 15. 



(?) Tardus nanus (not of Audubon) Heermann, Rep. Pacific R. R. Siu'v., x, jit. 



iv, 1859, 45 (breeding near San Francisco, California). 

 Hylocichla aonalaschkx slereni Grinnell (J.), Auk, xviii, July, 1901, 258 (Point 



Sur, Monterey Co., California; coll. Calif. Ac. Sci.); Pacific Coast Avifauna, 



no. 3, 1902, 73. — Daggett, Condor, iii, 1901, 131 (Pasadena, Los Angeles Co., 



California, Apr. 8 to 25). 

 Hylocichla guttata sleveni Swarth, Pacific Coast Avifauna, no. 4, Apr. 15, 1904, 64 



(Huachuca Mts., Arizona, Apr.; crit.). — Bailey (Florence M.), Handb. Birds 



W. U. S., 1902, 471, footnote. 

 [Hylocichla] guttata (not Muscicapa guttata Pallas) Sharpe, Hand-list, iv, 1908, 



143, part. 



HYLOCICHLA GUTTATA SEQUOIENSIS (Belding). 

 SIERRA HERMIT THRUSH. 



Similar in coloration*^ to H. g. sleveni, but decidedly larger and 

 slightly darker or browner; similar to H. g. guttata, but larger, paler, 

 and grayer; similar to H. g. auduhoni, but decidedly smaller. 



a Average measurements (of seven males and three females) by Mr. Grinnell (Auk, 

 xviii, 259). 



b Grinnell, Auk, xviii, 259. 



c Both //. g. sequoiensis and H. g. sleveni, in addition to l)eing paler and grayer on 

 upper parts have the spots on chest, etc., lighter and duller in color. 



