HYDROZOA. 
Cod. 17 
Polyserias hincJcsi and glacialis, Mereschkowsky (10), p. 228, pi. vi. 
figs. 15 & 16, provisionally announced as a new genus of Sertulariidoi ; 
hydrothocro in six or more rows. 
Cryptolaria confer Allman (l),p. 17, pi. xii. figs. 6-10 (off Cuba, 
450 fathoms), longitheca^ sp. n., id. 1. c. p. 19, pi. xiii. figs. 4 & 5 (Shot 
Key, 315 fathoms), abies, sp. n., id. 1. c. p. 20, pi. xiii. figs. 1-3, elegans ^ 
sp. n., id. ibid., pi. xiv. figs. 1 & 2 (Florida Reef, 152 fathoms). 
Sertularella conica, sp. n., id. 1. c. p. 21, pi. xv. figs. 6 & 7 (off Tor- 
tugas, 60 fathoms), amphorifera, sp. n., id. 1. c. p. 22, pi. xv. figs. 8-10, 
(Shot Key, 471 fathoms), gayi, var. robusta, ibid., pi. xv. figs. 3-5; S. tur~ 
gida (Trask), Clark (3), p. 259, pi. xxxviii. figs. 4 & 5. 
Sertularia marginata, sp. n., Allman (1), p. 23, pi. xvi. figs. 1 & 2 (off 
Florida Reef, 324 fathoms), tumida, sp. n., id. ibid., pi. xvi. figs. 3 & 4 
(Tortugas), tubitheca, id. 1. c. p. 24, pi. xvi. figs. 5 & 6 (Tortugas, 16 
fathoms), exigua, sp. n., id. ibid., pi. xvi. figs. 7 & 8 (Cape Fear, 9 
fathoms), distans, sp. n., id. 1. c. p. 25, pi. xvi. figs. 9 & 10 (Tennessee 
Reef, 21 fathoms) ; S. anguina, Trask, Clark (3), p. 255, pi. xl. figs. 1 & 2, 
var. robusta, p. 256, pi. xl. figs. 3-5 (California, Vancouver Island), 
greenii, Murr., p. 257, pi. xxxviii. fig. 8,furcata, Trask, p. 258, pi. xxxix. 
fig. 3. 
Desmoscyphus longitheca, sp. n., Allman, 1. c. p. 26, pi. xiv. figs. 3-6 
(Key West). 
Flumularia franciscana, Trask, is a Hydralmannia ; Clark (3), p. 260. 
Thuiaria distans, sp. n., Allman (1), p. 27, pi. xvii. figs. 1 & 2 (Tor- 
tugas) ; plumulifera, sp. n., id. 1. c. pi. xvii. figs. 3-6 (Cape Fear, 9 
fathoms) ; pinnata, sp. n., id. 1. c. p. 28, pi. xv. figs. 1 & 2 (Shot Key, 3-4 
fathoms) ; sertularioides, sp. n., id. 1. c. pi. xvi. figs. 11 & 12. 
Plumularia siliquosa, sp. n., Ilincks (9), p. 148, pi. xii. figs. 2-6 
(Guernsey; only known in its simple, non-plumose stage) ; filicula, sp. n., 
Allman (1), p. 29, pi. xviii. figs. 1 & 2 (Alligator Reef, 88 fathoms) ; 
macrotheca, sp. n,, id. 1. c. p. 30, pi. xviii. figs. 3 & 4 (off Cuba, 450 
fathoms) ; attenuata, sp. n., id. 1. c. pi. xviii. figs. 5 & 6 (off Bocca 
Grande, 105 fathoms) ; megalocephala, sp. n., id. 1. c. p. 31, pi. xix. figs. 
1 & 2 (Alligator Reef, 14 fathoms) ; geminata, sp. n., id. 1. c. p. 32, pi. xx. 
figs. 1-4 (Sand Key, 120 fathoms) ; P. setacea (Lmk.), Clark (3), p. 261, 
pi. xii. figs. 1 & 2. 
Ilalopleris, g. n., Allman {Plumulariidarum'). Hydrosome pinnate- 
plumose ; stem and pinnae divided into internodes ; hydrothecae uni- 
lateral, adnate to side of pinnae, flanked by a pair of nematophores, adnate 
to them, one on each side ; mesial nematophores 2 (or more), not adnate 
to the hydrotheca, fixed, monothalamic, with an oblique aperture con- 
tinued into a lateral slit (gonosome unknown). H. carinata, sp. n., id. 
1. c. p. 33, pi. xix. figs. 3-7 (Carysfort Reef, 35 fathoms). 
Antennularia simplex, sp. n., id. 1. c. p. 34, pi. xxi, figs. 1 & 2 (Alligator 
Reef, 86 fathoms). 
Antennopsis, g. n. (Plumul.), id. Stem jointed, sending off scattered 
jointed ramuli, which carry the hydrothecae ; these are unilateral, with 
entire margin, associated with a pair of moveable supracalycine nemato- 
phores and with moveable azygous nematophores borne along the hydro- 
