98 BIOLOGICAL SOCIETY OF WASHINGTON. 



3. Alauda blakistoni, new species. 



Diagnosis. — Like Alaicda 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., 18 mm. 



Hab. — Kamtschatka. 



Type. — No. 92,700, U. S. Nat. Mus. 



Remarks. — This x?, Picus kamtschatkensis of Taczanowski (1882), 

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

 Okotsk, a7id not from Kamtschatka Bonaparte's bird is, in every 

 respect, a typical D. pipra and the name P. kamischatkensis 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 



