PIETSCH and VAN DUZER: SYSTEMATICS AND DISTRIBUTION OF ANGLERFISHES 



terygoid. The suspensorium is unusually narrow 

 and elongate (due largely to the extremely narrow 

 and elongate quadrate), and directed obliquely 

 backward. The posterior head of the hyomandibu- 

 lar is the larger of the two heads forming a broad 

 articulation with the pterotic. The interhyal is 



Maxilla 



Premaxilla 



Symphyslal 

 cartilage 



FIGURE 10. — Elements of upper jaw of Melanocetus murrayi, 

 LACM 31501-3, 84 mm SL: A. Maxilla and premaxilla, left 

 lateral view; B. Symphysis of premaxillae, dorsal view. 



short and relatively thick (compared with that of 

 oneirodids, Pietsch 1974). 



The hyoid apparatus (including epihyal, 

 ceratohyal, and upper and lower hypohyals) is re- 

 latively short and thick (Figure 12). The lower 

 hypohyal extends down beyond the ventral mar- 

 gin of the ceratohyal. In other ways this portion of 

 the hyoid arch does not differ substantially from 

 that described for oneirodids (Pietsch 1974). 



Opercular apparatus (Figure 11). — The opercu- 

 lar apparatus is somewhat reduced (compared 

 with that of oneirodids, Pietsch 1974). The opercle 



Dorsal 

 hypohyal 



Ceratohyal 



Epihyal 



Ventral 

 hypohyal 



' Branchiostegal rays 



FIGURE 12. — Lateral view of hyoid apparatus of Melanocetus 

 murrayi, LACM 31501-3, 84 mm SL, interhyal not shown. Car- 

 tilage stippled. 



Hyomandibular 



Symplectic 



Interhyal 



Palatine 



Ectopterygoid 



Figure ll. — Lateral view of lower jaw, 

 suspensorium, and opercular apparatus 

 of Melanocetus murrayi, LACM 31501- 

 3, 84 mm SL. Cartilage stippled, open 

 spaces solid black. 



Subopercle 



Preopercle 



Interopercle 



Quadrate 



Dentary 



Articular 



65 



