42 Mr. A. W. Waters on the 
to L. reticulata , with which I think it would be well to unite it 
as var. galeata . 
Loc. Falkland Islands, Tierra del Fuego (Busk) ; Spitz- 
bergen and Greenland ( Smitt ) ; Lesina (Heller). 
27. Lepralia ventricosa , Hass., var. (PI. VIII. fig. 4.) 
This is evidently closely related to the ordinary ventricosa , 
but differs in having the secondary aperture much raised, 
especially at the two sides. I have not succeeded in showing 
the cells as much raised and distinct in front, as is the case. 
On one cell only have I seen a small avicularium. The cen¬ 
tral cells are smaller than the younger ones, though this is 
slightly exaggerated from the position in which it was drawn. 
28. Lepralia Pallasiana , Moll. 
This is common at Naples. 
At each side of the operculum there is a characteristic 
ridge, 0T1 millim. long, ending in two swellings. 
The length of an operculum drawn (19*) is 0T8 millim., 
width 0T7, being about the size of the aperture as given by 
Smitt. 
Loc . Pliocene: Bruccoli, Sicily, Crag. Living: Scandi¬ 
navia, British coasts, Roscoff («/.), Adriatic (Heller). 
29. Lepralia Pallasiana , Moll, var. armata , Busk. 
This variety has an avicularium turned over the aperture 
as the ordinary avicularia of L. auriculata. 
30. Lepralia Pallasiana , Moll, var. projecta. 
(PI. X. figs. 3, 3 a.) 
This is studded with spinous tubercles about the length 
of the aperture ; and in between are the pores. Below the 
aperture is a short spatulate avicularium. 
I think it extremely probable that this is Eschara Otto- 
Mulleriana of Moll (Seerinde, fig. 15 A, B, C), but cannot 
be sure that the half-round pore on a prominence, which he 
mentions, is the avicularium. 
Operculum (17*) ‘248 millim. long, T6 wide. 
A rosette-plate at each basal corner of the distal wall; four 
lateral rosette-plates. 
31. Lepralia lata, Busk. (PI. XV. figs. 12, 13: next part.) 
Lepralia lata , Busk, Quart. Journ. Micr. Sc. vol. iv. p. S09, pi. x. 
tigs. 1, 2; Manzoni, Bry. Plioc. Ital. cont. 1, p. 4, pi. 1. fig. 6. 
