38 
Mr. A. W. Waters on the 
ture is situated at the bottom of a deep depression as figured. 
In this depression are the two oral avicularia; and it is only 
upon the older cells that the large acute avicularia are found.. 
The ovicells are very characteristic, being usually slightly 
raised, with a flat depressed area ornamented with radiating 
lines. Round the depressed oral aperture there is usually a 
ridge. 
This is undoubtedly very nearly related to L. hiaperta of 
the Crag ; but I am not quite sure if it should be considered 
a synonym. 
Operculum with a rounded proximal edge, T16 millim. 
wide, T2 millim. long, muscular impressions '064 millim. 
apart. 
Found by Pourtales on shells and corals, Florida. Sea of 
Kara ( Srnitt , Bry. e Nov. Sem. & Jen. 1878). There is 
also a specimen in the British Museum (in the Eschara 
stadium) from Sio-u-wha Bay, Tartary, lat. 42° N., long. 
133° E. 
17. Lepralia linearis , Hass., var. hastata , Hincks. 
Lepralia linearis , Hass., var. hastata, Hincks, Ann. & Mag. Nat. Hist. 
ser. 3, vol. vii. p. 206, pi. xii. figs. 4, 4 a, and vol. x. p. 362. 
Avicularian process half the length of the cell. On sea¬ 
weed. 
18. Lepralia linearis , Hass., forma typica, Smitt. 
Lepralia linearis, Hass., B.M. Cat. p. 71; forma typica, Smitt, Krit. 
Fort. Skand. Hafs-B. 1867, pp. 13, 95, pi. xxiv. figs. 68, 69. 
Occurs at Naples on seaweed &c. in 10-50 fathoms, with 
the two avicularia on rounded mamillary eminences. 
Operculum (7*) rounded at the distal end, subtriangular at 
the proximal, with prominent hinge-processes ; length 0J09 
millim., width 0T ; muscular impression close to border, 0’6 
millim. from the proximal apex. 
Loc. Pliocene : Reggio. Living : Scandinavia (all depths), 
Finland, Britain, France, Adriatic. 
19. Lepralia linearis , Hass., typa secundaria, Smitt. 
(PI. IX. fig. 2.) 
This differs from the last form in having no avicularia. 
The large opening to the ovicell has a bar across, in the middle 
of which is a minute denticle on both sides for attachment of 
the horny cover. 
Row of eight to ten lateral rosette-plates, one third of the 
height from the base. The distal wall has about four near 
the base, and two above these close to the side. 
