INDEX. 
This Index includes the Genera and Species of Hydroida described both in this Report and in 
the former Report on the Plumularidae (Zool. Chall. Exp., vol. vii. part xx., 1883). 
Part 
Page 
Part 
Page 
Acanthella, . 
. I. 
27 
Desmoscyphus, 
. II. 
70 
effusa, . 
. I. 
27 
acanthocarpus, 
. II. 
73 
Acanthocladium, . 
. I. 
32 
gracilis, 
. II. 
71 
huxleyi, 
. I. 
33 
obliquus, 
. II. 
72 
Aylaophenia, 
. I. 
34 
pedinatus, . 
. II. 
71 
acacia, 
. I 
38 
Didyocladium, . 
. II. 
76 
attenuata , 
. I. 
37 
dichotomum, 
. II. 
77 
calamus, 
. I. 
39 
Diphasia, . 
. II. 
63 
coardata, 
. I. 
39 
pinaster, 
. II. 
63 
filicula, 
. I. 
36 
Diplocheilus, 
. I. 
48 
macgillivrayi, 
. I. 
34 
mirabilis, 
. I. 
49 
Antennularia, 
. I. 
24 
Diplocyathus, 
. II. 
16 
fascicularis, . 
. * I. 
24 
dichotomus, . 
. II. 
17 
Azygoplon, . 
. I. 
53 
Eudendrium, 
. II. 
3 
rostratum, . 
. I. 
54 
rameum, 
. II. 
4 
Calamphora, 
. II. 
28 
vestitum, 
. II. 
3 
parvida, 
. 11. 
29 
Grammaria, 
. II. 
46 
Campanularia, . 
. II. 
18 
insignis, 
. II. 
49 
cheloniee, 
. II. 
22 
magellanica, 
. II. 
48 
insignis, 
. II. 
19 
stentor, 
. II. 
48 
ptychocyathus, 
. II. 
20 
Halecium, . 
. II. 
9 
rdrojleza, . 
. II. 
21 
beanii, 
. II. 
12 
tulipifera, . 
. II. 
20 
cymiforme, . 
. II. 
15 
Cladocarpus, 
. I. 
49 
dichotomum, 
. II. 
13 
formosus, 
. I. 
51 
fastigiatum, . 
. II. 
13 
pediniferus, 
. I. 
50 
flexile, 
. II. 
11 
Cryptolaria, 
. II. 
37 
arboreum [ robustum ], 
. II. 
10 
abyssicola, . 
. II. 
40 
telescopicum, 
. ' II. 
10 
crassicaulus, 
. II. 
41 
Halicornaria, 
. I. 
52 
diffusa. 
. II. 
42 
plumosa, 
I. 
52 
flabellum, 
. II. 
40 
Halisiphonia, 
. II. 
30 
geniculata, . 
. II. 
41 
megalotheca, 
. II. 
31 
gracilis, 
. II. 
42 
Hebella, 
. II. 
29 
humilis, 
. II. 
39 
striata, 
. II. 
30 
pulclidla, 
(zool. chall. exp. 
. II. 
— PART LXX. — 1888.) 
40 
Heteroplon, 
. I. 
Aaaa 12 
31 
