KiTTEE. — OctacnemuB. 



PLATE 2. 



Fig. 3. This should be compared with Figure 8, Plate 3. Dorsal view of the 

 visceral mass, removed from the test, and a section, part of wiiicli is 

 shown on its inner surface in Figure 9, Plate 3, cut from the dorsal 

 side of tiie branchial sac. 



Fig. 4. Same as Figure o, excepting that the cut has been somewliat extended, and 

 tlie food material entirely removed from the branchial sac. 



Fig 5. The stomach-intestine, from the dissection sliown in Figure 4, made hy a 

 transverse cut corresponding to the line y of Figure 4. 



Fig. 6. A single brancliial orifice much enlarged. 



Fig, 7. The endostyle with a portion of the pcribranchial band. 



