HYDROMEDUS^. 
Coel. 21 
S. megastoma, p. 90, pi. xx, figg. 8 & 9, /S'. complexa^ p. 94, pi. xxi, 
figg. 5-9, aS'. meridionalis, p. 98, pi. xxiii, figg. 8 & 9, ^S'. elegans^ p. 98, 
pi. xxiv, fig. 1, S. minuta, p. 99, pi. xxiv, figg. 9& 10, S. levinseni, p. 100, 
pi. XX vi, figg. 1 & 2, >S', magna, p. 103, pi. xxvii, fig. 1, S. hartla,uhi^ 
p. 104, pi. xxvii, fig. 5, Nutting, Special Bull. U. S. Mus. 1904 : n. spp. 
Sertularia curta, Indian Ocean, Jaderholm, Arkiv Zool. i (3), p. 285, pi. 
xiii, figg. 3 & 4, n. sp. 
S. pumila, p. 51, pi, i, figg. 1-3, S. operculata, p. 54, pi. ii, figg. 3-5, S. 
pulchella, p. 55, pi. ii, figg. 6 & 7, >S'. hispinosa, p. 56, pi. ii, figg. 8-11, 
S. deswmdes, p. 56, pi. iii, figg. 1-3, S. gracilis, p. 57, pi. iii, fig. 10, 
S. cornicina, p. 58, pi. iv, figg. 1-5, 8. brevicyathus, p. 60, pi. vi, figg. 
1 & 2, iS. tumida, p. 60, pi. vi, fig. 5, S. exigua, p. 61, pi. vi, fig. 6, 
Nutting, Special Bull. U. S. Mus. 1904. 
S. versluyiy p. 53, pi. i, figg. 4-9, S. challengeri, p. 54, pi. ii, figg. 1 & 2, yS. 
rathhuni, p. 57, pi. iii, figg. 4-9, S. mayeri, p. 58, pi. v, figg. 1-4, S. 
pourtalesi, p. 59, fig. 5, S. stookeyi, p. 59, figg. 6 & 7, ^S. fiowersi, p. 60, 
pi. vi, figg. 3 & 4, Nutting, t. c. n. spp. 
Siphonophora, gonostyles of two Antarctic forms, Thomson, P. Phys. Soc. 
Edinb. xvi, pp. 19-22. 
Stomotoca australis, Bahamas, Mayer, Mem, Mus. Brooklyn i, p, 9, pi. i, 
fig- 9- . 
Stylactis ajffinis, Patagonia, Jaderholm, Arkiv Zool. i (3), p. 264, pi. i, fig. 1, 
n. sp. 
Syncoryiie linvillei, Long Island Sound, Hargitt, Biol, Bull, vii, pp. 251- 
253, 1 fig, 
Syndictyon angulatum, Bahamas, Mayer, Mem. Mus, Brooklyn i, 1, p, 7, 
pi, i, fig, 6, 
Synthecium tuhithecum, p, 134, pi, xli, fig, 1, S. marginatum, p, 135, pi, xli, 
fig, 3, S. cylindricum, p. 136, fig, 7, Nutting, Special Bull, U, S, Mus, 
1904 ; S. tuhithecum (n. n. for Sertularia Allman) Antilles, Jaderholm, 
Archiv Zool. i (3), p. 291, pi. xiii, fig. 7, 
S. rectum, p, 135, pi, xli, fig, 2, S. robustum, p, 136, figg. 4-6, Nutting, 
Special Bull. U, S. Mus, 1904; S. protectum, Patagonia, Jaderholm, 
Arkiv Zool. i (3), p, 290, pi, xiii, figg, 5 & 6 : n, spp, 
Tetracannota collapsa, Bahamas, Mayer, Mem, Mus, Brooklyn i, p. 12, 
pi, iv, fig, 32, 
Tiara superba, Bahamas, Mayer, t, c. p. 9, pi, ii, fig, 11. 
Tiarella singularis, structure, Hartlaub, Wiss. Meeresuntersuch, v, 2, 
pp, 97-106, fig, 2, 
Tiaropsis punctata, Bahamas, Mayer, Mem, Mus, Brooklyn i, p, 14, pi, iii, 
Thuiaria thuja, p, 62, pi, vii, figg, 1-3, T. elegans, p, 64, pi, vii, fig, 4, T. 
robusta, pi, viii, figg, 5-7, T. thuiaroides, figg, 1-6, T. polycarpa, p, 65, 
figg. 7-9, T. kurilce, pi, ix, figg, 1 & 2, T. lonchitis, p, 66, figg, 5-8, T. 
plumulifera, p, 67, figg, 9-13, T. diffussa, p, 68, pi, x, figg, 1-3, 
T. similis, p, 69, figg, 7-9, T. tubuliformis, p, 70, pi, xi, figg. 1-8, T. 
tenera, figg, 9-12, T. fabricii, p, 71 j pi, xii, figg, 1 & 2, :r, argentea, 
p, 71, fig. 3-9, T. cupressina, p, 72, pi, xiii, figg, 1-3, Nutting, Special 
Bull, U, S. Mus, 1904, 
T. immersa, p, 66, pi, ix, figg, 3 & 4, T. dalli, p, 68, pi, x, figg, 4-6, Nutting, 
t, c. n, spp. 
Thyroscyphus torresii, India, Jaderholm, Arkiv Zool, i (3), p, 273, pi, xii, 
fig, 6, 
T. repeals, Antarctic regions, Jaderholm, Arch, zool, exp. Notes (4) iii, 
p. vii, n, sp. 
fTristylotus n. gen, for T. hexagonus n, sp., a remarkable parasite from 
the Devonian rocks of the Hudson Bay Slope, Parkes, Amer, J, Sci. 
xviii, pp, 135-140, 6 figg. 
