Davenport, — Budding in Bryozoa. 
PLATE X. 
ABBREVIATIONS. 
An. Anal side of polypide. kmp’drm. Kamptoderm. 
an. Anus. lu, gn. Lumen of the ganglion. 
atr. Atrium. ms’drm. Mesoderm. 
can. cre. Ring canal, mu Musculature of oesophagus. 
cev. pyd. Neck of polypide. mu. ret. Retractor muscle of polypide. 
ce. Cocum. æ. CEsophagus. 
cla. Cuticula. op. Operculum, 
di’sep. Wall of zocecium in the corm. Or. Oral side of polypide. 
ec’drm. Ectoderm. or. Mouth. 
ex. Outer layer of bud. pyd. dgn. Degenerated polypide, “ brown 
fun. Funiculus. body.” 
ga. Stomach, rt, Rectum. 
gn. Ganglion. ta. Tentacle. 
2 Inner layer of bud. 
Fig. 83. Sagittal section through young polypide of Escharella variabilis. X 820. 
Fig. 84. Regenerated polypide of Lepralia Pallasiana on operculum (op.). X 880. 
Fig. 85. Cross section of pharynx of adult polypide of Escharella variabilis, show- 
ing perforated cell walls. X 635. 
Fig. 86. Sagittal section of young polypide of Lepralia Pallasiana, showing forma- 
tion of brain. X 320. 
Fig. 87. Section parallel to sole of a corm of Escharella variabilis at about the stage 
of Figure 86, showing atrium, ganglion, and rectum. X 430. 
Fig. 88. Vertical section through a bit of roof of corm of Escharella variabilis at 
neck of polypide, showing also the region of future operculum and of 
origin of future regenerated buds. Compare with Figure 90. X 410. 
Fig. 89. Sagittal section of young regenerated polypide of Flustrella hispida inter- 
mediate in age between Figures 86 and 83. Shows the origin of the 
ganglion and rotation of the oral tentacles. X 820. 
Fig. 90. Vertical section of a bit of body wall from same individual as Figure 88, 
to show the comparatively less embryonic condition of cells here than 
at neck of polypide. X 410. 
Fig. 91. Operculum of Zepralia Pallasiana cut verpendicularly to surface, show- 
ing originof aregenerating polypide. Body wall somewhat shrunken 
from cuticula. X 410. 
Fig. 92. Section through a regenerated polypide of Escharella variabilis, showing 
relations of alimentary tract to “ brown body” (pyd. dgn.). x 410. 
