REPOET ON THE HYDROIDA. 
35 
Gonosome not present. 
Locality . — Station 312, Port Famine, Magellan Strait ; lat. 53° 37' S., long. 70° 56' W.; 
depth, 9 to 15 fathoms. 
I cannot find any character which would justify the separation of this beautiful 
Hydroid from the Lafoea fruticosci of Sars. Its pinnate ramification, lying nearly in one 
and the same plane, and stretching laterally to an extent which nearly equals that of the 
height of the colony, gives to the entire assemblage a somewhat flabelliform shape. The 
stem and principal branches are fascicled on the perisiphonic type, but towards the distal 
extremities become monosiphonic. The long and narrow hydrothecse gradually taper 
towards the base into peduncles w T hich are but slightly narrower than the body of the 
hydrotheca, from which they are not separated by any definite line of demarcation. The 
peduncles are not annulated, but present about two turns of a very open spiral. 
The soft parts were well preserved in the specimen, and the hydranths could in many 
instances be seen in sufficient detail to render most of their external characters easily 
recognisable. 
Lictorella, n. gen. 
Name suggested by the resemblance of the perisiphonic stem to the bundle of rods carried by 
the Roman lictor. 
Generic Character. Trophosome . — Hydrocaulus consisting of a single axial tube 
enveloped to a greater or less extent by numerous peripheral tubes but free in its more 
distal parts. Hydrothecse cylindrical, pedunculate, with entire margin, destitute of 
operculum, and with the cavity distinctly differentiated from that of the peduncle, their 
walls never adnate to the hydrocaulus. 
Gonosome not known. 
The genus Lictorella includes certain Campanularian Hydroids with branching 
perisiphonic hydrocaulus. Though it approaches Lafoea in its perisiphonic hydrocaulus 
and in its deep and somewhat tubiform hydrothecse, the presence of a limiting floor by 
which the cavity of the hydrotheca is distinctly differentiated from that of the peduncle 
renders it necessary to keep it generically distinct. Though the hydranth has not yet been 
observed, the analogy of allied forms renders it probable that the hypost.ome is conical. 
The collection contains two species referable to the genus Lictorella. 
Lictorella halecioides, Allman (PL XVII. figs. 1, 2). 
Lafoea halecioides, Allman, Report on the Hydroida collected during the Expedition of 
H.M.S. “ Porcupine,” Trans. Zool. Soc. Lond., vol. viii. 
Trophosome . — Hydrocaulus attaining a height of about four inches ; perisiphonic 
stem irregularly branched, stem and branches sending off very regular, pinnately disposed, 
alternate monosiphonic ramuli, which carry along their entire length two series of alternate 
