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 120 THE CONDOR Vol. XXi Remarks.--This new subspecies differs from Junco oreganus thurberi in its much less blackish head and throat, which, in the adult male, are slate color instead of black; much less extensively rulescent brown of the back; paler and less extensively buff (more pinkish) sides and flanks. It thus presents a very interesting combination of the characters of Junco oreganus thurberi and Junco oreganus townsendi. It has the very pale pinkish sides of Junco oreganus townsendi, but in the color of both head and back is almost exactly intermedi- ate between these two races. This is further shown by its individual variation which, as in all forms of the Juncos, is considerable. In one specimen (no. 196962, U.S. Nat. iIus.) the head is blackish, approaching the color of the same part in Junco oreganus thurberi, though the throat is a little darker than in the other examples from the Hanson Laguna iIountains. The color of the back in two other individuals (nos. 19B963 and 196965, U.S. Nat. iIus.) can be almost exactly matched in specimens of Junco oreganus townsendi, although the head and throat are seen to be more deeply colored. The birds from the Hanson Laguna Mountains are clearly intermediate between Junco oreganus thurbcri and Junco orega.nus townsendi, but present 'sufficient characters of their own, particularly in view of their isolated breeding range, to warrant their separa- tion as a distinct subspecies. The discovery of the intermediate character of these specimens from the Hanson Laguna Mountains is of considerable interest in view of' the recent opinion of Dr. Jonathan Dwight (Bull. Amer. iIus. Nat. Hist., xxxvnI, June 1, 1918, pp. 296-297) that Junco townsendi is a subspecies of Junco mearnsi. The study of these specimens and their relationships with the two contiguous forms shows clearly that Junco oreganus pontilis directly connects Junco townsendi with Junco oreganus thurberi, and that, therefore, the former must be a sub- species of the latter. The present race is probably confined to the Hanson Laguna Mountains, since the birds from the San Jacinto Mountains appear to be typical of Junco oreganus thurberi. In this connection it is of interest to recall the fact that many of 'the spe- cies and subspecies of the genus Junco, in addition to the one here described, occupy very restricted geographical areas during the breeding season. Con- spicuous among these forms might be mentioned Junco bairdi, Junco aikeni, Junco insularis, Junco vulcani, Junco oregwn. us townsendi, and Junco alticola fulvescens. Detailed measurementp of the specimens of Junco oreganus pontilis are added below: ss o srcs o u:vco ous ors,  r m ows CAIIFORNIA BY 1. W. NELSON AND E. A. GOLDMAN Middle U.S. Nat. Sex Locality Date Wing Tail Exposed Tar- 1oe Mus. No. culmen sus without claw 196964  El Rayo, Hanson June 4, 1905 ' 76.5 66.5 11 20 13.3 (type) Laguna Mts. 196962  E1 Rayo, Hanson June 4, 1905 76 66.5 10.8 21 15 Laguna Mts. 196963 "" [] E1 Rayo, Hanson June 4, 1905 76 68.5 10.2 20.5 13.8 Laguna Mts. 196965  Hanson Laguna June 5, 1905 80.5 71.5 11 20.5 13.3 Mts., Hanson Lag- una Washington, D.C., March 8, 1919.