süß-CLASS VI TELEOSTEI 99 



Halec, Ag. (Pornognathus, Dixon ; Archaeogadus, v. d. Marck). Premaxilla 

 very slender, with minute teeth ; maxilla equally slender, with a few relatively 

 large spaced teeth at its hinder end. Palato-pterygoid teeth closely arranged, 

 laterally compressed cones, largest in the middle of the arcade. No dermal 

 scutes, except a pair of recurved hooklets oii the caudal pedicle. H. eupterygius, 

 Dixon, well preserved in Lower Chalk, S.-E. England. Halec sternbergi, 

 Ag., in Turonian, Bohemia. Other species in Upper Cretaceous, Mount 

 Lebanon, and in Lower Cretaceous, Isle of Lesina, Dalmatia. 



Empo, Cope. Double series of teeth on palatine, none barbed. Premaxilla 

 elongate, with one row of small teeth ; mandibular teeth in two series, of 

 which the outer are small and in several rows, while the inner are very large. 

 Upper Cretaceous of Kansas and S.-E. England. 



Family 12. Scopelidae. 



Premaxilla much extended, exdudiug maxilla from upper margin of mouth. 

 Skull and skeleton as in Enchodontidae. A small adipose fin behind the dorsal fin. 

 No air bladder. Trunk naked or scali/, without bony scutes. Cretaceous to 

 Recent. 



Exclusively marine fishes, for the most part pelagic or deep-sea forms. 



Sardinioides, v. d. Marck. Teeth minute ; maxilla expanded behind. 

 Dorsal fin median ; paired fins small ; caudal fin slightly forked. Scales large, 

 serrated at the hinder border. S. monasteri, Ag. sp., from Upper Cretaceous, 

 Sendenhorst, Westphalia. Other species from Mount Lebanon. 



Sardinius, v. d. Marck. Upper Cretaceous; Westphalia. Leptosomus, v. d. 

 Marck. Upper Cretaceous ; Westphalia and Mount Lebanon. Opisthopteryx^ 

 Pictet and Humb. Lebanon. 



Scopeloides, Wettstein. Upper Eocene ; Canton Glarus. 



Parascopelus, Anapterus, Sauvage. Upper Miocene ; Licata, Sicily. 



PJiinellus, Ag. {Ichthyotringa, Cope), (Fig. 175). Slender fishes with very 

 large pectoral fins, and the premaxillae produced forwards into a long pointed 



Fio. 175. 

 Rhinellus fiircatus, Ag. Upper Cretaceous ; Sendenhorst, Westphalia (after W. v. d. Marek). 



rostrum. Teeth slender and pointed. Dorsal fin small, in advance of the 

 still smaller anal fin ; caudal fin forked. Scales smooth, slightly enlarged 

 along the course of the lateral line. Upper Cretaceous ; AVestphalia, Mount 

 Lebanon, and Dakota. 



