no. 1734. FISHES FROM LOFTSIAXA— WEYMOUTH. llM 



plate, of which 29 are anterior to the vent. Head small, blunt; 

 mouth moderately small, markedly oblique; lower jaw markedly 

 projecting and blunt, gape not reaching vertical from front of orbit: 

 teeth (determined from one of the cot\ T pes) only in jaws, minute, 

 acute, arranged both above and below in two rows which, however, 

 are approximated and tend to pass into one at the extreme posterior 

 end. Nostril double, anterior opening at ti|> of upper jaw, posterior 

 at anterior edge of orbit. The cheeks are provided with rows of 

 extremely minute pores having a definite arrangement. There are 

 three' principal vertical rows dividing the space between the angle of 

 the mouth and the tip of opercle into four approximately equal spaces. 

 The most posterior of these is deflected forward below and joins the 



Fig. 2.— Head ok Leptocerdali longipinnis. 



next anterior near its lower end. In addition there are three much 

 shorter vertical lines running downward from near the eye and jusl 

 failing to join a rather longer horizontal line lying al l he level of t he 

 gape. No pores were noticed in other parts of the head. The other 

 available members of the family (('<i-<l<il< ionthas and Microde&mus 

 retropinnis) were examined in this connection and found to exhibit 

 similar pores, but rather less conspicuous and differing in arrange- 

 ment, (iillslit wider than attachmeni of pectoral (I in head), run- 

 ning from near the upper margin of base of pectoral downward and 

 slightly forward, somewhat curved. 



The vertical (ins are connected with the caudal. The distance 

 from the head to t he origin of dorsal is contained about t w ice in head. 

 The dorsal is composed of 2 I slender flexible spines and 17 branched 



