380 MR JAMES MURRAY ON A NEW FAMILY 
as long as broad, acuminate, divergent, obtuse, incurved. Jaws with broad, brown, 
pectinate border, dental formula 5/4. Food not moulded into pellets. Oviparous. 
General descruption.—Greatest length ¢5 to yg imch. Trunk dark yellow. Anterior 
row of tubercles more prominent than the others, sometimes so long that they hang 
down over the next two rows. Third segment of neck, close to tubercled trunk, viscous, — 
and with a little extraneous matter adhering. Rostrum slightly broader towards apex, 
ciliated cup usually quite everted, the lamelle then standing far apart. Papille on 
dises, only once seen, like little curved thorns. Viscera difficult to see through the 
dark, thickened skin. Under strong pressure stomach seen, with its walls filled with 
small clear globules. Brain large. Glands, intestine, cloaca, and vibratile tags not seen. 
Arrangement of teeth unusual. Three large teeth in one jaw fit into the spaces between 
four large teeth in the other. There is an additional thinner tooth at each end of the 
row of three. 
In the contracted state the tubercled trunk is so similar to that of Philodina mac- 
rostyla, variety tuberculata, that it might be passed over for that species. When it 
extends itself it is found to differ in everything else. Every part of the Philodine is 
long and slender, of the Callidine short and broad, except the antenna. This is straight, 
not elbowed as in P. macrostyla. The foot appears to end in a disc, as in the 
‘symbiotic’ Callidine. It is a very small and obscure disc, and no perforations could 
be seen. It may yet be found to have short, broad toes. The tubercles could be 
removed by rolling the animal under the coverslip. 
Habits—Very slow and cautious. After being disturbed it may remain fully 
contracted and motionless for a long time. It puts out its head very gradually, feel- 
ing carefully about with its long antenna before venturing out. When it has gained 
confidence it walks forward rather briskly for an animal so heavily armoured. The 
very short foot is only momentarily seen, the disc not at all, unless it happens to be 
walking upside down. It was not eager to feed, and when it tried to do so was 
evidently annoyed by the débris surrounding it, and soon desisted. 
Habitat.—In the sediment of one or two ponds at Fort-Augustus, February 1904. 
It was pretty abundant for a time in one pond. 
Philodina laticornis, n. sp. (Plate VII. figs. 12a to 12c.) 
Specific characters.—Very large. Foot and rump together about 2 of greatest 
length when creeping. Corona narrower than trunk, discs with small central papille. 
Rostrum short, broad, with very small ciliate lamellae. Antenna stout, length equal 
to 2 diameter of neck. Brain fairly large, with pair of large, oblique, yellowish-red 
eyes. ‘Two teeth in each jaw. Foot of three joints. Spurs large, broad, divergent, 
interstice slightly exceeding diameter of spur at base. Dorsal toes small, ventral long, 
