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NEOMOEDACIA. 



I 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 Mordacia. 



NEOMOEDACIA HOWITTIT. 



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 head 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 difficult to be distinctly seen 

 with the weak magnifying power I possess, but I observe a row 

 of strong conical and pointed teeth placed round the mouth, and 

 wide apart ; 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. 



Yery different 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 tbree inches long ; it was found at 

 Cape Shanck by my old and highly esteemed friend, Dr. Howitt. 



MYSCINID^]. 



" 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- 



