6 Otel 
C(ELENTERATA. 
Polyplumaria plumila , sp. n., Allman, (2) p. 31, pi. iv. figs. 7 & 8, 
‘Challenger’ Station 75, lat. 38° 37' N., long. 28° 30' W., 450 fatli., 
bottom sand. 
Heteroplon , g. n., Allman, (2) p. 31. Trophosome : Hydrocladia pin- 
nate ; hydrothecal internode, with the lateral nematophores moveable, 
and with a mesial fixed spine-like nematophore below the hydrotheca. 
Gonosome not known. For II. pluma, sp. n., Allman, (2) p. 32, pi. viii. 
figs. 1-3, ‘ Challenger ’ Station 162, East Moncoeur Island, Bass’s Strait, 
38-40 fath., bottom sandy. 
Acanthocladinum , g. n., Allman, (2) p. 32. Trophosome : Distal por- 
tion of branches destitute of hydrocladia, whose places are taken by a 
long spine-like appendage on each internode. Gonosome : Phylactocarp 
replacing a hydrocladium, and consisting of a rhachis with two series of 
pinnately-disposed, alternate, free ribs, each rib carrying near its base 
a hydrotheca. Gonangia springing from the rhachis. For A. liuxleyi 
(Busk), ‘ Challenger ’ Station 188, lat. 9 Q 59' S., long. 139° 42' E., 28 fath., 
bottom mud; also Station 190, lat. 8° 56' S., long. 136° 5' E., depth 
49 fath., bottom temperature 23° 9 C., bottom mud. 
AglaopJienia filicula , sp. n., Allman, (2) p. 36, pi. xi. figs. 1-6, ‘ Chal- 
lenger’ Station 75, lat. 38° 37' N., long. 28° 20' W., depth, 450 fath., 
bottom sandy ; A. attenuata, sp. n., Allman, (2) p. 37, pi. xi. figs. 7-9, 
Simon’s Bay, Cape of Good Hope, depth 10-20 fath. ; A. acacia , sp. n., 
Allman, (2) p. 38, pi. xii. figs. 1-4, Station 75, lat. 38° 37' N., long. 28° 
30' W., depth 450 fath., bottom sandy; A. calamus, sp. n., Allman, (2) 
p. 39, pi. xii. figs. 5-8, Bahia, 10-20 fath. ; A. coarctica, sp. n., Allman, (2) 
p. 30, pi. xix. figs. 7-9, Zamboanga, Philippines, 10 fath. 
Lytocarpus racemiferus , sp. n., Allman, (2) p. 41, pi. xiii., Bahia, 1C-20 
fath. ; L. speclabilis, sp. n., Allman, (2) p. 43, pi. xv., Zamboanga, Philip- 
pines, 10 fath., Torres Strait, lat. 10° 30' S., long. 142° 18' E., 8 fath., 
bottom, coral, sandy. 
Strep tocaulus, g. n , Allman, (2) p. 48. Trophosome : Hydrocladia 
disposed in a continuous spiral round the stem ; hydrotheca with entire 
margin ; mesial nematophore not adnate to the walls of the hydrotheca. 
Gonosome not known. For S. pulcherrimus, sp. n., Allman, (2) p. 48, 
pi. xvi. figs. 1-3, Porto Praya, St. Jago, 100 fath. 
Diplocheilus , g. n., Allman, (2) p. 48. Trophosome : Hydrotheca with 
a duplicature of its walls forming an external calycine envelope, which 
surrounds the hydrotheca for some distance behind its orifice. Mesial 
nematophore in the form of a shield-like process not adnate to the 
hydrotheca ; lateral nematophores absent. Gonosome not known. For 
D . mirabilis, sp. n., Allman, (2) p. 49, pi. viii. figs. 4-7, Station 162, 
Moncoeur Island, Bass’s Strait, depth 38-40 fath., bottom sandy. 
Cladocarpus pectiniferus, sp. n., Allman, (2) p. 50, pi. xvii., Station 76, 
lat. 36 p 11' N., long. 27 9 9' W., depth 900 fath., bottom temperature 
4° 2 C., bottom, Globigerina- ooze. 
Halicomaria plumosa, sp. n., Allman, (2) p. 52, pi. xviii., Station 122, 
Barra Grande, Brazil, depth 32 fath. 
Azygoplon, g. n., Allman, (2) p. 53. Trophosome : Hydrocladia pin- 
nately disposed. Mesial nematophore adnate to the walls of the hydro- 
