426 



ANNELIDA. 



state their four branches appeared as if issuing directly from the main 

 trunk like the anterior eight pair of lobes. This diflference 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 cseca. Colour — back viewed with a very high mag- 

 nifying power exhibited about four distinct rows of white spots, with a 

 few smaller spots u-regularly 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, Szc, the creature was so 

 extremely beautiful, that it might be compared to 

 an arborescent agate. It is well entitled to the 

 epithet venniculus sjjlendidissitniis applied by 

 Miiller to the very nearly allied Gloss, heteroelitu. 

 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 lohes, 

 which are more or less jjinnate, and termed 

 " Lohina " 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. (/eometra, 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. (/eometra as distinguished from P. Perccs. 



P. Perc(B, Templeton. 

 North of Ireland, Mr. Templeton. 



P. marina, Thompson (MSS.). 



North of Ireland, W. T. 



Snuillcr one having the margin of the larger sucker " minutely crenulate 

 under a magnifier " (Dr. J.). This specimen (in spirits) is an inch in 

 length and 1^ 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. 



Genas PONTOBDELLA. 



P. muricata, Leach, Zool. Mis. 

 April, 1847. — Among oysters (large and small specimens) from Strang- 



