232 
NEOMOEDACIA. 
1 propose giving this name to a very small lamprey, 'which has 
no first dorsal, or rather has only one dorsal, separate and 
rather distant from the caudal ; this forms a broad oval, and is 
angulous at its extremity. Form of Morclaaia. 
NEOMOEDACIA HOWITTII. 
Height of body about nineteen times in its total length ; the 
length of the snout, up to the external edge of the eye, a little 
longer than the height of the body ; the h.Sad is not inflated, 
and follows on to the snout by an arched line, and on the body by 
a straight one ; the dentition is very difflcult to he distinctly seen 
with the' weak magnifying power I possess, hut I observe a row 
of strong conical and pointed teeth placed round the mouth, and 
wide apait ; a few teeth on each side larger than the others, and 
inserted forwards. I can only say that there are others further 
back, and a few appear tricuspid ; there are a few fringes round 
the mouth ; the branchiostegal apertures are seven ; they are 
round, and begin at a short distance from the eye, which 
is large. 
The first half of the body and the head are like reticulated, and 
covered with irregular excavations ; the middle of the body is 
smooth, but the posterior part is again similar to the anterior. 
Very diiferent from the other lampreys. This has a hard body, 
and being incrustated with sand, I do not doubt but that it lives 
in perforated holes on the sea shore. 
It is of a dark blue on the upper parts, and silvery below ; the 
caudal fin is red, and the eye yellow ; the muzzle black. The only ^ 
specimen I have seen is about three inches long ; it was found at 
Cape Shanck by my old and highly esteemed friend. Dr. Howitt. 
MYSOINID.E. 
“ Body eel-shaped, naked, the single nasal aper- 
ture is above the mouth, quite at the extremity of 
the head, which is provided with four pairs of bar- 
