102 
Fig. 16. 
1 
. Do; do. Operculum of ovicelligerous zocecium, x 85. 
. Hippothoa expansa, Dawson. Operculum, x 85. Off Elmwood. 
. Lepralia hippopus (Sm.). Opereulum, x 85. Off Elmwood. 
. Cribrilina annulata (Fab.); Xx 25. Off glacier between Cape Flora 
Fig. 1. 
— CO 
cr 
MR. A. W. WATERS ON 
Hippothoa hyalina, 1.. Operculum of male zocecium, x 85. From 
California. 
Do.; do. Operculum of female zocecium, x 85. 
and Cape Gertrude. 
. Cribrilina punctata (Hass.); x 25. Lat. 77° 55’ N., long. 53° 16’ E. 
Puate 9. 
Schizoporella elmwoodie, sp. nov.; X 25. 
. Myriozoum coarctum (Sars); X 25. Off Cape Mary Harmsworth, 
234 fathoms. 
. Do. (a) Operculum, X 85. (6) Mandible, x 85. 
. Myriozoum subgracile, VOrb.; x 25. 
. Do. (4) Mandible, x 85. (6) Mandible, x 250. (c) Operculum, 
x 85. 
. M. subgracile, VOrb. Section of tissue showing the polypides in 
position, the covering integument (a), over the inner one (0); also 
the long pore-tubes which in various places have a disk separating 
the contents on the two sides of the disk. The oral diaphragm is 
seen as withdrawn. X 25. 
. M. subgracile, @Orb. Section through polypide showing dm, the 
diaphragm; op, the operculum, with dotted lines to show the 
position when partly open; d, disks in the pore-tubes. 89. 
. M. subgracile, d’Orb. End of pore-tube showing the covering 
integument (a), and the inner one (4), X 500. Examined with ,5- 
immersion. 
. M. subgracile, Orb. Covering integument (a). X 85. 
. Schizoporella Harmsworthii, sp. nov.; X 25. Lat. 77° 55'N., long. 53° 
16’ E. 
. Do. Tentacular sheath with oral glands attached near the oral aper- 
ture, and connected to the lateral walls; x 85. (July 13th, 1897.) 
. Do. Oral glands, x 250. 
. Schizoporella elmwoodie, sp. nov. Operculum, x 85. 
Puatz 10. 
. Porella acutirostris, Sm.; xX 25. From near Northbrook Island 
(“LS.H.”). 
. Do. Mandible, x 250. 
. Do. Operculum, x 85. 
. Do. Piece mounted in balsam, showing the avicularian glands through 
the semitransparent shell, x 50. 
. Do. Section of avicularian gland, x 250. 
