230 NOVA SCOTIAN ICHTHYOLOGY.—HONEYMAN. 
IES 
Bluish sea lamprey. Petromyzon nigricans Family Petro- 
myzontidae. Black lamprey. Amvmo ecetus nigricans (Les- 
neur) Fam Petronvyzontidae, class Marsipobranchiae. Ist 
family Petromyzontidae III sub-class. 
Of this we have three specimens, one is bluish and two are 
black. The first is eight inches in length, the other two are 
between six and seven. 
“Body eel-shaped, naked—subject to metamorphosis; in the 
perfect stage with a suctorial mouth armed with teeth, horny 
sitting on a soft papilla; lingual and suctorial teeth may be 
distinguished. Eyes present (in mature animals). External 
nasal aperture in the middle of the upper side of the head. 
The nasal duct terminates without perforating the palate. Seven 
branchial sacs and apertures on each side, behind the head. 
The inner branchial ducts terminate in a separate common tube. 
They feed on fishes to which they suck themselves fast, scraping 
off the flesh with their teeth. Whilst thus engaged they are 
carried about with their victim.’—Gunther. 
They are found attached to mackerel, haddock and cod.— 
“Cape Cod to Cape Hatteras.”—Gill, Halifax. 
These are altogether different from the Petromyzon marinus 
of our Catalogue—Trans. 1879 
Vi 
Hag-fish. Myaxine Glutinosa. Family Myaxinidae IIL sub- 
class. Cyclostomata.—Gunther. 
Hags. Family Myxinidae. Ord. Marsipobranchu. Class 
Pisces.—Hualey. 
Hag-fish. Sucker. Slime-tish. Myaine glutinosa (Linn). 
Family Myxinidae. Ord. 12 Hyperotreta. Class C. Marsipo- 
branchii.— Gul. 
“Body eel-shaped, naked. The single nasal aperture is above 
the mouth, quite at the extremity of the head, which is provided 
with four pairs of barbels. Mouth without lips. Nasal duct 
