98 BIOLOGICAL SOCIETY OF WASHINGTON. 



3. Alauda blakistoni, new species. 



DIAGNOSIS. Like Alauda japonica in the rusty tinge and the 

 dark blackish brown scapulars and interscapulars, but differing in 

 being larger and having a stronger and larger bill. The hind neck 

 rusty colored, only dotted with small dark spots, forming a light 

 collar between the strongly marked pileum and the dark color 

 of the upper back. 



$ $\ Total length, 187 mm.; wing, 116 mm.; tail f., 72 mm.; 

 exp. culm., 13 mm. 



$ 9 Total length, 186 mm.; wing, 109 mm.; tail f., 70 mm.; 

 exp. culm., 12 mm. 



HAB. Kamtschatka and Bering Island. 



TYPES. Nos. 92,658 and 92,660, U. S. Nat. Mus. 



4. Dendrocopos immaculatus, new species. 



DIAGNOSIS. Similar to D. pipra, but with unspotted white under 

 tail-coverts, and the outer rectrices pure white, without dark cross 

 bars, or only with trace of a single bar ; white bars on the wing 

 broader ; malar stripe narrow, broken, dusky, but not black. 



$ : Total length, 167 mm.; wing, 97 mm.; tail f., 61 mm.; exp. 

 culm., 1 8 mm. 



HAB. Kamtschatka. 



TYPE. No. 92,700, U. S. Nat. Mus. 



REMARKS. This is Picus kamtschatkensis of TACZANOWSKI (1882), 

 but not of BONAPARTE (1854), whose type specimen came from 

 Okotsk, and not from Kamtschatka. BONAPARTE'S bird is, in every 

 respect, a typical D. pipra and the name P. kamtschatkensis conse 

 quently an unconditional synonym of the Siberian form. 



5. Lagcpus ridgwayi, new species. 



DIAGNOSIS : $ $ , in summer-plumage, above brownish black with 

 dark ferruginous brown cross-bars and mottlings, but without any 

 trace of white, whitish, and grayish edgings or barrings; first 

 summer-plumage with blackish jugulum as in L. muta ; bill longer 



