308 DR. H. GADOW ON THE INTESTINAL [May 21, 
The four smaller excentric circles contain the plagio-, peri-, anti-, 
and isoccelous modifications of the orthoccelous type. 
Consequently the Passeres are mesogyrous, with besides anticce- 
lous formation. All the Columbe are periccelous ; some, or rather 
the majority, with a mesogyrous spiral. The names are placed in 
‘ such a way as to show that similarity or relationship which is indi- 
cated by the intestinal arrangement. 
Loops. 
principal 
Number of 
loops. 
he |e ea | eave 
DrOMEUS  vyeeveceseeeeee ee 7, 0 l,o ... | Several transverse open 
loops besides the duo- 
denum. 
COSUATIUS co. seetecacens 3 r, 0 1,0 ... | Besides the daodenum with 
two short loops. 
DF. se ok PPO ICE ECOL 2(3)| 7.9 | Zo ... | Besides the duodenum with 
one large, open loop, which 
begins to form two secon- 
dary ones. 
GUILE O a wee atte tactics wor 3 7 l ... | Besides the duodenum the 
mid-gut and the colon 
form each one enormous 
convolution of many folds. 
APLETYE aannesiasaeesninn«s | 4 7,0 a) ... | Second and third loop with 
terminal twist ; both with 
the last placed trans- 
versely. 
Cryptuni i) -c.Juaeneeess 3 7, el | 1,0 ... | Orthoccelous. 
RaSOLeS, weaeds.streneenees 4 Rah WV ih lo Plagiocelous. 
MUPMNICES wscecsicceeaecaees 4 l,cl | eo 1,0 Plagioccelous. 
PGE7OCLES. 9. secs fice nessa 4 l,cl | 1, el | 2, cl | Isoccelous. 
Rallidse’ sea ei 5 1,0 l,cl | r,cl,o Periccelous. 
Tako! 4 1,0 r,cl | r,el,o Periccelous. 
SDI LeLe he ei { 3 Spiral el Mesozyrous, eyclocclous. 
Tanid 4 1,0 r,cl | o Periccelous. 
ATIC wosccccccccccce { 3) Spi ral Oo Mesogyrous. 
Gan 4 1,0 r, cl | eb Periccelous. 
reso eet ee ae 1 { 3 Spijral el Mesogyrous. 
AIG  .edeceasetee 6 lo r,cl | l,cl | Amphicelous ;_ the last 
3 loops closed, straight, 
and left-handed. 
Spheniscide ............ Lael ha) r, 0 Z, cl | Many orthoceelous, closed 
loops; some of them with 
numerous irregular con- 
yolutions. 
a 5 Pei alien f+ ch i orthoceelous, closed 
Pygopodes............ y 
Podiceps and alternating. 
Herod itis. ceuvcsntieees 6 l,cl | r,cl | 1, ct | Orthoccelous, alternating 
closed lips; duodenum 
often turned far round to 
the left. 
Steganopodes............ 64+ 2c | rd | 7, Orthoccelous, closed, alter- 
nating. 
BERS ed) |S oe ee ee a 
