of Edinburgh, Session 1880-81. 79 
Branchial sac with four folds on each side. Transverse vessels 
all of the same size. Internal longitudinal bars very few, there 
being only two between each pair of folds. Meshes transversely 
elongated, containing each six to eight stigmata. 
Dorsal lamina plain. 
Tentacles many, filiform. 
One specimen from Station 150 (south of Kerguelen Island), 
150 fathoms. 
BOLTENINiE. 
Apertures four lobed. 
Boltenia. 
Stigmata transverse. Stigmata vertical. 
B. elegans. 
Olfactory tubercle 
simple. 
B. legvmen. 
Olfactory tubercle 
very complicated. 
B. pachydermatina. 
Branchial aperture 
tri-lobed ; atrial 
aperture bi-lobed. 
Culeolus. 
Stalk turned posteriorly. 
Stalk turned anteriorly. 
Dorsal end fringed. Dorsal end not 
fringed. 
C. recumbens. C. perlucidum. 
Surface even. Surface very 
uneven. 
Dorsal end fringed. Dorsal end not 
fringed. 
Surface even. Surface very 
uneven. 
C. suhmi. 
C. murrayi. 
C . moseleyi. C. wyville-thornsom. 
