11. 



EXrLANATION OF TERMS USED IN DESCEIBING THE 

 EXTEENAL EOEM OF BIEDS. 



Turtfiis jntgrntorius, h. 



REFEKENCES TO THE FIGURE. 



N. B. In 



tlie fisurc the adjacuiit regions arc separated liy a double bar, with the letters he- 



A. The body in Kfiiei--'!- ''" T'he resion of the tad. 



n. The region of tlie head. F- " " " ^'''"S-- 



C " •' " neek. G. " " " legs. 



j,^ u u u trank. II- Tlie featlicr.^. 



NOTE. -I am uiKlor obligations to Profossor Pu.ulov.ll of Stockholm and Dr. Sclatcr of London for as.«istance 

 in correcting and improving thu present article.— S. F. Uaikd. 



