BY W. MACLEAY, F.L.S. 383 



Mandibulary lamina crescent-shaped, with about nine acute 

 conical cusps, three of which are larger than the others. 

 Suctorial teeth in somewhat distant series, radiating from the 

 centre ; the teeth of the series between the mandible and the 

 posterior lip being as numerous as those of the other series, 

 but rather more confluent. The anterior labial teeth converge 

 and are confluent behind ; each tooth of the posterior pair is 

 like one-half of an elongate oval. Suctorial disk elliptic, with 

 a free lip behind. The first dorsal at a considerable distance 

 from the second. Body immaculate. 



Tasmania, Port Phillip. 



Genus Neomordacia, Casteln. 



Differs from Mordacia in having only one dorsal fin, separate 

 and rather distant from the caudal fin. 



Australia. 



1128. Neomordacia Howittii, Casteln. 



Proc. Zool. Soc, Victoria, Vol. I., p. 232. 



" Height of body about nineteen times in the 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 ; there are a few 

 others further back, and a few are tri-cuspid. 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 



