HYDROZOA AND CTENOPHORA. 
Goel, 9 
Order v., Hydrocorallin^. 
Labiopora nioseleyi^ sp. n., Ridley, (43) pi. vi. fig. 11, Port Rosaria, S.W. 
Chili (on the north side of the chief island of Madre-di-Dios Archi- 
pelago), 2-10 fath. On a piece of calcareous rock. 
GRAPTOLITES. 
Pterograptus, g. n. Fam. Didiograptidoi, Lapw., near Didymograptus^ 
for Pterograptus elegans, sp. n., = Graptolithus gracilis, Kjerulf, 1865; 
Holm, (28) p. 77, figs. 1-4. Also includes P. (?) acutus, Hopk., 1875, = 
Ptilograptus acutus, Hopk., 1875 ; J. Hopkinson & C. Lapworth, “ De- 
scriptions of the Graptolites of the Arenig and Llandeilo Rocks of St. 
David’s,” J. Geol. Soc. xxxi. [1875], p. 662, pi. xxxvii. figs, la & \ h. 
Dictyonema venustum, sp. n., Lapworth, (38) p. 171, pi. vii. figs. 1 a-1 c, 
Aberystwyth; D. delicatulum, sp. n., id. 1. c. p. 172, pi. vii. figs. 2a 
& 2 h, Aberystwyth ; D. corrugatellum, sp. n., id. ibid. pi. vii. figs. 3 a & 
3 5. 
Calyptograptus (?) plumosus, sp. n., id. 1. c. p. 173, pi. vii. fig. 4, and C. 
digitatus, sp. u., p. 174, pi. vii. figs. 6a & 6 5, Aberystwyth. 
Acantliograptus ramosus, sp. u., id. 1. c. p. 174, pi. vii. fig. 5. 
Odontocaulis,g. n. Polypary cyathiform, composed of numerous inde- 
pendent and frequently bifurcating polypiferous branches, originating 
from the distal extremity of a short stem, which is likewise polypiferous, 
and is terminated proximally in an irregular corneous expansion ; hydro- 
thecae of the type of those of Dictyonema, biserial, subalternate. For 0. 
keepingi, sp. n., Lapworth, 1. c. p. 176, pi. vii. figs. 1 a & 1 b. 
Sub-Class SCYPHOMEDUS-^. 
Order i., STAUROMEDusis. 
Tesserantha connectens, Haeckel, 1. c. p. 375, No. 402, and (24) pp. 50-53, 
pi. XV. 
Lucemaria hathyphila, id., 1879, 1. c. p. 640, No. 597, = Lucernosa 
bathypliila, id., 1880 (MS.), and (24) pp. 54-62, pis. xvi. & xvii. 
Order ii., Peromedus^e. 
Periphylla mirabilis, Haeckel, 1. c. p. 422, No. 424, and (24) pp. 64-84, 
pis. xviii.-xxiii. 
Periphema regina, id. 1. c. p. 421, No. 423, and (24) pp. 85-91, pis. xxiv. 
& XXV. 
Order iii., Cubomedus^. 
Charybdea murrayana, Haeckel, 1. c. p. 442, No. 426, and (24) pp. 93-101, 
pi. xxvi. 
