146 
THE VOYAGE OE H.M.S. CHALLENGER. 
The collection affords only a single specimen of this species parasitic apparently on a 
white coral. At first sight it resembles some varieties of Schizoporella ansata, but the form 
of the oral orifice is quite different, belonging to the type assigned to Gemellipora by Prof. 
Smitt, and represented in his Gemellipora lata (Florid. Bryoz., p. 36, pi. vii. fig. 157), 
the peculiarity of the Gemelliporan orifice consisting in the presence of a minute articular 
notch instead of a tooth on each side, and the deep excavation of the lower border. 
But the broad quadrangular form of the orifice in this case contrasted with its elongate 
pyriform shape in Gemellipora glabra, &c., and the truly lepralian habit of the growth 
lead me rather to place it under the genus Lepralia as here understood. The exist- 
ence of an avicularium on each shoulder of the cell is of course common to numerous 
species. In their small size in the present species they more resemble those of Lepralia 
woodiana, Bk., than any other. As the only specimen in the collection is dead, I have 
been unable to avail myself of the characters afforded by the chitinous parts and 
can only supply instead the accompanying figure of the oral orifice. 
(8) Jjepralia lonchcea, n. sp. 
Character. — Zoarium adnate (on shell). Zooecia immersed and widely ventrieose 
below, produced and contracted, almost subtubular above, with the orifice directed 
forwards. Mouth rounded oblong, with a minute articular notch on each side below ; 
lower border entire, slightly curved ; peristome thin, raised all round, sometimes slightly 
channelled in front. On many zooecia, on one side of the 
neck-like peristome, an upright avicularium with a long spear- 
shaped mandible pointing directly upwards. Operculum about 
0'02 mm. in diameter, suborbicular, with a minute tubercle on 
each side corresponding to the articular notches. 
Habitat. — Admiralty Islands, lat. 2° O' S., long. 147° 20' E. 
The elevated peristome is like that which affords the main 
character of Mr. Hincks’ artificial genus Phylactella, but the 
shape of the oral orifice is, with the exception of the two 
little articular notches, so precisely like that of Lepralia 
pallasiana and Lepralia pertusa, that taking also into 
account the presence of avicularia, I have thought that it should be classed with the other 
forms to which Prof. Smitt and Mr. Hincks have limited the generic name Lepralia. It 
is very closely allied to the preceding species, but the form of the cells, the produced oral 
part and the elevated peristome, together with the altogether different avicularia, render 
them manifestly distinct. To the same group perhaps might be referred Gemellipora 
lata and Discopora pertusa (Smitt, Florid. Bryoz., p. 72, pi. xii. fig. 240), [? nee Auctt.]. 
Fio. 43. — Lepralia, lonchcca. 
Operculum aud mandible. 
