6 NORTH AMERICAN FAUNA 61, FISH AND WILDLIFE SERVICE 



have been covered with volcanic ash in recent times. 'The shore- 

 lines are irregular, with offshore islets, rocks, and undersurface 

 reefs, and there are boulder beaches, sandy beaches, and abrupt 

 cliffs in great variety. 



The accompanying field sketches, (see figs. 2-22) showing a few 

 of the islands in profile, suggest the variety of configuration. 



Figure 2. — Semichi Islands from mountain on Alaid Island (June 1937). 

 Note that a narrow spit connects Alaid, in foreground, with the middle 

 island ; Shemya, the easternmost, is in the distance. 



Figure 3. — Sketch elevation of Agattu Island, seen from west end of Alaid 



Island, looking southwesterly. 



Figure 4. — Sketch elevation of Buldir Island, looking southeast. 



AMCHITKA 

 (WEST END) 



.RAT 



KISKA 

 (N. END) 



CHUGUL DAVIDOF 



LITTLE 

 SITKIN 



Figure 5. — Sketch elevation of several Aleutian Islands, looking west. 



