86 Rev. A. M. Norman on undescribed — 
Their surface is granular, and they are punctured round the 
margin in the same manner as the cells. Found on stones, 
from 80 to 100 fathoms, Shetland, 1861 and 1863. 
This species approaches certain forms of L. variolosa very 
closely ; and indeed it is difficult to point out the distinctions of 
the two species in words. I have seen, however, a large number 
of L. laqueata, and they all differ from LZ. variolosa,—lst, in 
having the cells much larger, more rhomboidal, and less elon- 
gated, wider in proportion to their length, and less regularly 
arranged in quincunx ; 2ndly, in being invariably tinged with 
red in living and being ivory-white in dead specimens, and 
having their surface dull, instead of shining with the bright gloss 
which is so marked a feature in L. variolosa; 3rdly, in having 
the denticle much more deeply seated within the mouth, and in 
having the ovicells less immersed. 
Lepralia divisa, n. sp. Pl. X. fig. 6. 
L. cellulis convexiusculis, glabris, approximatis, in lineis dispositis ; 
orificii margine superiore spinis sex longissimis armato, inferiore 
denticulato ; ovicellula globosa, glabra, fissura angusta longitudi- 
nali parallela inferne occlusa discissa. 
This is an exquisitely beautiful Lepralia, remarkable for its 
snow-white colour, the linear arrangement of its closely crowded 
cells, and the very great length of the six spies which surround 
the upper margin of the mouth. The cells themselves are small 
and smooth, but have little character, being quite subordinate to 
the mouth and ovicell, which are the parts of the polyzoary 
which at once strike the eye; indeed the cell is generally almost 
entirely hidden by the superincumbent ovicell of the cell placed 
immediately beneath it in its own linear series. The mouth has 
the lower lip furnished with two or three tooth-like points, and 
sometimes produced outwards into a large spatulate process or 
flattened umbo. The upper lip, when not surmounted by an 
ovicell, is furnished, as before stated, with six very long and 
slender spines. ‘The ovicell is semielliptical, much elevated, but 
somewhat flattened on the face, which is marked with longitu- 
dinal lines, and cleft down the centre with a narrow, parallel- 
sided slit, which is closed below. 
Dredged in 1859, between Guernsey and Herm, on dead 
shells. 
Lepralia divisa is allied to L. fissa (Busk); but the latter spe- 
cies may at once be known from it by the presence of a conspi- 
cuous central sinus on the lower lip, and the absence of the teeth 
of L. divisa, and by the fissure in the ovicell being triangular, 
rapidly widening towards and quite open at the base, and not 
extending so far towards the summit of the ovicell as is the case 
a ee ee 
