SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 91 



Head length 2.9, greatest depth (at first dorsal spine) 3.7, least 

 depth caudal peduncle 10, and predorsal length 2.8 times in standard 

 length. Horizontal diameter of eye 2.4 in head. Interorbital width 

 (bony) 3.8 in horizontal diameter of eye. 



Measurements in millimeters : Standard length 35 ; head length 12 ; 

 horizontal diameter of eye 5 ; bony interorbital 1.3 ; greatest depth of 

 body 9.5 ; least depth caudal peduncle 3.5 ; snout tip to origin of dorsal 

 fin 12.5 ; greatest thickness of head 6 ; snout tip to end of maxillary 6.5. 



Head massive and thick. Body rather compressed. Depth decreas- 

 ing gradually from dorsal origin. Anal base somewhat convex. 

 Maxillary barely extending to hind border of eye, widened posteriorly, 

 the upper part of its end notched. Jaws equal anteriorly. Caudal 

 apparently acuminate. Pectoral extending to over liase of first or 



Fig. I. — Lonchistiuvi lemur. Holotype, X 2. Drawn by G. S. Myers. 



second soft ray of anal fin. Lateral line high, ending below base of 

 first soft dorsal ray. Body and nape fully scaled, the scales terminat- 

 ing abruptly at the superficial line of the skull. 



Teeth in jaws long and conical but slightly blunt at tips, fairly 

 evenly spaced and longer in the front than at the sides ; a single series 

 in each jaw except for two or three teeth behind the main series at 

 the mandibular symphysis; teeth of lower jaw directed outward 

 rather strongly, especially toward front, those of upper jaw less evi- 

 dently flaring ; a small edentulous place at middle of upper jaw. No 

 teeth on vomer, palate, or tongue. 



Gill rakers long and slender at junction of upper and lower limbs 

 but short at ends of arch ; 12 rakers on upper limb and 26 on lower 

 limb of first arch, or 38 in all. Branchiostegal rays 6. Gill membranes 

 free from each other and from the isthmus. 



Color mostly lost. Scale pockets faintly dark-edged. Dorsal and 

 anal fins faintly dusky toward margins. 



