18 Gcel. 
CQELENTERATA. 
naked colony with numerous Medusa buds. The hydranths have no 
tentacles, and the organism appears to be truly parasitic. The Medusce 
which are set free pass through a two-tentacled to a four-tentacled stage, 
but could not be reared further. The species resembles both Siphono- 
phora and Hydromedusce ; Fewkes, (3) pp. 224-232, pis. iv & v. 
HYDROIDA. 
The Hydroida are classified thus : — 
Suborder I. Gymnoblastea : Tubularince , Hydractinince , Cory morph- 
ines, Hydrolarince. 
„ ii. Calyptoblastea : Campanularince , Sertularince , Plumu - 
larince , Thalamophora. 
„ hi. Eleutheroblastea : Hydrince. 
„ IV. Hydrocorallia : Milleporince , Stylasterince. 
„ v. Monopsea : Trachomedusce , Narcomedusce. 
„ yi. Riiabdopiiora : Graptoloidea , Retioloidea. 
Allman, pp. lii & liii. 
GYMNOBLASTEA. 
Bougainvillidj:. 
Stylactis vermicola , n. sp., N. Pacific ; Allman, p. 2, pi. i, fig. 2. 
EuDENDRIDiE. 
Eudendrium vestitum, n. sp., Heard I. ; Allman, p. 3, pi. i, fig. 1. 
MoNOCAULiDiE, n. fam. 
Monocaulus imperator , Alim., 1885, fully described, with figuros ; 
Allman, p. 5, pi. iii, figs. 1-7. 
CALYPTOBLASTEA. 
CaMPANULARIDjE. 
Calamophor.a , n. g. : stolon creeping ; hydrothecae lageniform, inopercu- 
late, almost sessile ; gonangia oviform, subsessile ; for Q.parvula , n. sp., 
Bass St. ; Allman, pp. 28 & 29, pi. x, fig. 3. 
