384 



U. S. NATIONAL MUSEUM BULLETIN 217 



120- 



10 



MAY 



20 



91 JUNE 



10 20 



30 JULY 



10 



20 



GRAMS 









F 















110- 









c3 















130 



100- 













o o 













-leo 



90- 









o 



o 





o 













110 



80- 



eiG . 











o 



HETEROSCELUS 



. (F) 



















m. 116.1 g. s.d.9.7 9 



c.v.8.3 % 





























MEDIUM . 









O CO 



o 













SMALL . 



i 



m 



m 



o 



o° 



















FAT 























F. 









o 















MF. 









oo 



00 

















LF. 









o 



o 















VLF. 























weisijT 



rp 



MAY 2P 



3.' 



JUNE 10 



20 



80 JULY 



1 



20 



GRAMS 



lib. 





F 





















110- 







 00 ° 



















45 



40 























' 3S 



90- 



























80- 

 EGG 









EROLIA 



BAIROII 



(F) 















m 39.1 g. 



s.d4.l g. 



c.v.10.4% 









BIG. 







OL 

















SMALL. 





08° °° 

























FAT 





















F. 





00 





















MF. 























LF. 





00 



000 

















VLF. 





















Figure 33 — Top: Wandering tattler, ? {Heteroscelus incanum). Bottom: Baird's sand- 

 piper, ? {Erolia bairdii). 



