UYDROZOA AND CTENOPHORA. 
Owl. 6 
cipally collected by Dr. Jolliffo in New Zealand. The collection con- 
tains 20 forms. Of these, 6 are referable to the genus Scrtularella, 9 to 
Sertularia, 4 to Thuiaria, and 1 to Pericladium ; 10 of these are new 
species. 
30. O. WiNTiiER, Nat. Tidsk. xii. p. 303, deals with the internode in 
Sertiilaria gracilis — S. pumila, var., and S. tenera = cvpressina, 
var. (according to the author). 
ISew genera and sjwcies : — 
Sub-Class IL—IIYDROMEDUSyE. 
Order i. — G ymnoblastea-Anthomedusac. 
Vennaria symmetrica^ Clarke (6), p. 240, pi. i. figs. 2 & 3, Bahia Honda, 
Cuba. 
Etuhndrium distincium, id. 1. c. p. 241, pi. i. figs. 4-^6, 10 miles north of 
Zoblos Island ; E. ramosum, Armstrong (1 a), Cape Comorin, 40 fath., 
Arakan, 10-70 fath. The gonophores are borne upon atrophied 
hydranths, from which the tentacles have disappeared. 
Order ii. — CALYPTOBLASTEA-LEPTOMEDUSJ^h 
Obelia hyalina, Clarke (6), p. 241, pi. iv. fig. 21, 10 miles north of 
Zoblos Island. 
Campanularia coromta, id. 1 . c. p. 242, pi. iv. fig. 22, 10 miles north of 
Zoblos Island. 
Lafoea serrata, id, 1. c. p. 242, pi. iv. fig. 26, near Havana, Cuba, depth 
292 fath.; L. robusta, id. 1. c, p. 243, pi. iv. fig. 24, long. 84*’2rW., 
depth 101 fath. 
Beriularia complexa^ id. 1 . c. p. 246, pi. iv. figs. 26-28 6, Yucatan. 
Attached to an A Iga. 
Plumularia gracilis^ id. 1. c. p. 246, pi. v. figs. 29 & 30 c, off Havana, 
Cuba, depth 175 fath. Very closely allied to P. gemmata, Allman, differ- 
ing in the arrangement of branches, internodes, and nematophores. 
Cladocarpus tenuis^ id. 1. c. p. 247, pi. v. figs. 31 & 31 6, lat. 25° 33' N., 
long, 84® 21' W., depth 101 fath. Closely allied to C. dolicothcca^ All- 
man, differing in the shape of the hydrothecm and in having a more 
slender habit. 
Nematophorus, g. n,, id. 1. c. Trophosome ; hydrosome pinnate, plu- 
mose ; stem and pinnae divided into internodes ; hydrothecae adnate to 
the pinnae, unilateral ; a peculiar rounded process at the base of each 
pinna, with a small opening on the median line near the inner or 
proximal end. Supracalycine, mesial, and cauline nematophores present ; 
gonosome not known. For N. grandis, sp. n , id. 1. c. p. 248, pi. v. 
figs. 32-35, 10 miles north of Zoblos Island, lat. 24® 8'N., long. 82° 5TW., 
depth 339 fath. The most prominent point of this interesting species 
1879. [vOL. XVI.] D o 
