426 
ANNELIDA. 
state their four branches appeared as if issuing directly from the main 
trunk like the anterior eight pair of lobes. This difference will be under- 
stood by a reference to Moquin-Tandon’s figure 4, of plate 13 (2nd edit.), 
representing the ordinary appearance, and his fig. 3, pi. 4 (1st edit.), the 
latter. Four pair of caeca. Colour — back viewed with a very high mag- 
nifying power exhibited about four distinct rows of white spots, with a 
few smaller spots irregularly interspersed ; but the general aspect was of 
a glassy transparency of a very pale red tinge, imparted to it by extremely 
minute dots of red disposed over the body and disc. This glassy trans- 
parency rendered the vessels, of the digestive 
system, which were of a fine dark red colour, very 
conspicuous ; and, owing to the jagged outline of 
the series of lateral lobes, &c., the creature was so 
extremely beautiful, that it might be compared to 
an arborescent agate. It is well entitled to the 
epithet vermiculus splendidissimus applied by 
Muller to the very nearly allied Gloss, heteroclita. 
To that species it indeed, judging from the de- 
scription, bears a strong resemblance — but belongs 
to a different division of the genus : — to that de- 
fined as having more than six stomachal lobes, 
which are more or less pinnate , and termed 
“ Lobina ” by Moquin-Tandon (p. 369, 2nd edit.). 
This is the genus Hcemocharis of Filippi (not of Savigny) : the species 
here described may be termed Hcem. Eachana by those who consider the 
characters of generic value. 
Genus Piscicola. 
P. geometra, Linn. (sp.). 
Lough Eaghish, County Monaghan, and Lough Neagh, Mr. Hyndman. 
Mr. Templeton has described and figured a new species from the latter 
locality in Loudon’s Magazine of Natural History, vol. ix. p. 236, f. 28, 
and named it P. Percce. The specimens observed by Mr. Hyndman are 
the true P. geometra as distinguished from P. Percce. 
P. Percce, Templeton. 
North of Ireland, Mr. Templeton. 
P. marina , Thompson (MSS.). 
North of Ireland, W. T. 
Smaller one having the margin of the larger sucker “ minutely crenulate 
under a magnifier ” (Hr. J.). This specimen (in spirits) is an inch in 
length and 1-L lines in breadth. It was found attached to a Lophius, 
taken in Belfast Bay, August 19th, 1844, by Mr. Hyndman. 
Larger one is 2\ inches long and 1^ lines in breadth, the margin of 
large sucker is plain under a magnifier in the same degree as the smaller 
appears crenulate. This large specimen was found attached to the gills 
of a holibut brought to Belfast market, March, 1840. 
A third specimen found adhering externally to the jaw of a cod, De- 
cember 28th, 1842, by Dr. Drummond. 
Genus Pontobdella. 
P. muricata, Leach, Zool. Mis. 
April, 1847. — Among oysters (large and small specimens) from Strang- 
