580 REPORT—1885. 
a. Hrect and ramose (escharan). 
1. Gemellipora glabra, Smitt, ‘Chal. Rep.’ pl. xxv. fig. 8 
= G. glabra (forma typica), ‘ Florid. Bryoz.’ 
B. Adnate (lepralian). 
2. Gemellipora cribritheca, Busk, ‘ Chal. Rep.’ pl. xxxiil. fig. 5. 
The following four genera, established by Mr. Hincks for British 
species of Marine Polyzoa, are not accepted—or only partly accounted 
for—in the classification of Mr. Busk :— 
Genus 78. Umbonula, Hincks. 
‘Zocecia with a primary orifice, sub-orbicular or sub-quadrangular, 
lower margin slightly curved inwards, peristome not elevated, no second- 
ary orifice; a prominent umbo (? avicularian cell) immediately below 
the mouth, supporting an avicularium. Zoarium (in British species) in- 
crusting.’ —Brit. Mar. Poly. p. 316. 
Umbonula verrucosa, Hsper. (Umbonella, text, p. 316), pl. xxxix. 
fie.1, 2. Loc.: Several British ; Roscoff; Adriatic (rare) ; Greenland. 
Genus (78?). Phylactella, Hincks 
= Lepralia (Avett, part) = Alysidota (sp.), Busk. 
‘Zocecia with the primary orifice more or less semicircular, the lower 
margin usually dentate; peristome much elevated, not produced or chan- 
nelled in front. No avicularia. Zoarium (in British species) incrusting.” 
— Brit. Mar. Polyzoa, p. 356. 
1. Phylactella labrosa, Busk (Hincks, pl. xliii. fig. 12). Loe.: Antrim ; 
Shetland ; S. Devon ; Hastings ; Wick ; Cornwall. 
2. a collaris, Norman, op. cit. pl. xliii. fig. 3. Loc. : Hebrides, 
Shetland ; Guernsey ; Hastings ; Antrim. 
3h ¥, exima, Hincks, op. cit. pl. xlix. fig. 11. Loc. : Antrim ;. 
off the Deadman ; Shetland. 
4. Es lucida, Hincks, ‘ Annals,’ July 1880, pl. x. fig. 4. Loc.: — 
Madeira. 
Genus 79(?). Palmicellaria, Alder. 
‘Zocecia with the primary orifice orbicular, or ranging from semi- — 
circular to semi-elliptical ; the peristome elevated around it, so as to form — 
asecondary orifice, and carried out in front into a projecting palmate or 
mucronate process, with an avicularium on its inneraspect. Zoarium (in 
the British species) erect and ramose, or (?) lamellate. —Brit. Mar. Polz. 
p. 378. 
1. Palmicellaria elegans, Alder, op. cit. pl. xxx. figs. 7-9. Loc : Zetland 
Seas ; Loch Fyne. 
Skenie Hil. and Sol., op. cit. pl. lii. figs. 1-4. 
Var. a, bicornis, Busk (Crag form). 
» f, foliacea. Loc.: Wick. 
» y tridens, Busk. Norway. 
3. A lorea, Alder (‘ Brit. Mar. Pol.’ pl. lii. figs. 5, 6). Loe. 
Shetland. 
4, es (?) cribraria, Johnston. (Provisionally placed.) Loc. = 
Berwick Bay, Johnston. 
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