XMl.UirAN -w vnv.MR 



The oc>s3plK\i;us. is without dilitatiou or croj) of ;viiykim\ and varies in 

 lenjj;th from o.u' inch Hhick a.il Yelluw Warbler to (mic and a half inches 

 (irtater Hahania Ycllov-tlucat . The ])r()vc'iitriculiis is short, twtntv-five hiiii- 

 tlrc'dths of an inch Hlack-throatcd Blue Warbler to forty hundredths ' Hav- 

 hreasted. The glands are simple and are arran<^ed in a zonular band. Sec 

 I'ii;. () B, jjroventriculus of Kirtlands Warbler, laid open and enlarj^ed. 

 Th-' stomaeli is round and Hattened, .4.) bv .4o by .'. o in Kirtland's Warbler 

 See l'"i<4-. (i A, o. The walls are never very muscular, varyin<>- in thickness from 

 tive hundredths of an inch, ( I'arula ^Varbler, to thirteen hundredths, i Black- 

 tliroatcd I^lue AVarbler. j Tlio liiuiiy Jiumbiauc is always soft. 



Viu. 8. 



Fi. 



Head of Yellow-breasted Cliat. A, 

 upper mandible of s^rae. 



A, sternum of Kirtland's Warbler: 

 B, sternum of Greater Bahama Yellow- 

 tliroat; C, viserj of Kirtland's War- 



The fold of the duo.bnum is not disproportionately lonir. Sec Fit;-, (i. 

 A I), varying from thirty-five hundredths, (Greater Bahama Yellow-throat, Fiu,-. 

 (), C. I), ) to seventy hundredths. Black and Yellow Warbler, The jjancreas is 

 xisually small and quite regular in form. Sec Fig. (i, (' i\ but is sometimes larg- 

 er and quite inegular ;^Kirtland"s Warbler this variation may, however, be due 

 to individual variation, as 1 find another sj)ecimen of the (ireater Bahama 

 Yellow-throat with an irregularly formed pancreas. See Fig. (5, 1). 



The intestine is short and proportionately wide. It varies in length from 

 three inches ' Black-throated Blue to four and a half inches. KirtlaiuTs ^^'ar- 

 S.ler. 



The coeca are very small and adliere closely to tlie intestine, in a similar 

 iiKinner as seen in Fig. 12, B. 



The heart is small and ])ointed. measuring forty bv twenty-fix e liundredths 

 r)f an inch in Kirtland's Warbler. See Fig. 9. ii. 



The right lobe of the liver greatly e.vceeds tlie left in -size. See I'ig. '.'. 

 J... J.. 



