248 Records of the Indian Museum. [Vou. V, 
branchial cleft are about 25 white lamelle. ‘There is no caruncle 
but a few projections in front of the rhinophores. 
The jaws are rather long and narrow with about 8 rows of 
denticles, which are especially plain on the masticatory process. 
The formula of the radula is about 30X40+1+1+1+40. The 
broad and high central tooth bears about 5 ridges and denticles on 
either side, and six more on the median cusp. ‘The first tooth is 
low, bearing about 5 denticles on both sides. The other teeth bear 
about 8 denticles, decreasing in number outwards until there are 
only one or two. The nine outermost teeth or so are smooth. 
Judging by the dentition, this appears to be the Linguella 
(Sancara) quadrilatervalis of Bergh. According to his descriptions 
the number of denticles on the laterals varies from 32 to 8, which 
is an unusually wide range. But perhaps the former figure is a 
misprint. 
The colour appears to be better preserved in these specimens 
than in those previously described, and it seems probable that the 
living animal is greenish with white dots, sometimes united into 
longitudinal lines. 
Cuthona annandalei, sp. nov. (Plate xix.) 
Three specimens were found on stones at Port Canning on the 
Mutlah River in the Sunderbands. A coloured drawing was made 
of one while still alive, and all three were examined by me in the 
Calcutta Museum when they had not been long in spirits. They 
are 70—80 mm. long and 50—7o0 mm. broad, including the cerata, 
but were probably about 1°50 mm. long when living and extended. 
The colours, as far as preserved, agree with the drawing. 
The head is expanded into a roundish disk bearing two nearly 
equal pairs of simple tentacles with no trace of perfoliation. The 
eyes are small, but distinct and black. The foot is not angulate, 
but, like the head, is expanded into a disk. The tail is short and 
rounded. 
The purplish diverticula of the liver are visible through the 
skin. ‘They communicate with a distinct purple hepatic tract in 
the body cavity posterior to the stomach. The branches of this 
tract are simple and clear, as in Tergipes. The cerata are disposed 
in two divisions. The first consists of four groups lying imme- 
diately behind the rhinophores! and supplied from the right and 
left diverticula of the stomach. Then comes a gap, and behind it 
are 6-7 rows of cerata, the rows on the right and left hand sides 
not being accurately opposite to one another. ‘There are 5-6 
cerata in each row, and all are supplied from the posterior diverti- 
1 It would appear from the figure that this is not the case in the living animal, 
but due to contraction. 
