1911.] NATURAL SCIENCES OF PHILADELPHIA. 563 



base of third right premaxillary fang. On each premaxillary on 

 outer surface and outwardly inclined, about midway between second 

 and third normal erect fangs a short slender conic tooth. Still 

 another posterior, or about opposite base of accessory fang to third 

 erect normal fang. Left mandibular ramus with short accessory 

 conic cusp just behind each tooth, except first, and last teeth as 3 

 small short cusps. Each palatine with 6 conic erect teeth anterior, 

 largest about ^ length of longest maxillary cusp, and others all 

 graduated down smaller. Branchiostegals 20 each side. Photo- 

 phores from isthmus to hind pectoral base 12, from latter to ventral 

 origin 17, from latter to anal 24, from anal origin to caudal base 12. 

 Upper enlarged lateral photophores 18 to ventral, and 26 from 

 ventral to anal. Photophores otherwise as in preceding example. 

 Length (caudal damaged) 7 inches. Same data as above example. 



I have given the above detailed account of these specimens of 

 this scarce deep-sea fish as the striking features of variation in some 

 of the structural characters have not been noted before. My 

 examples show the rudimental median mental barb but slightly, 

 probably because both are in poor preservation. There are several 

 points at variance with Bonaparte's figure, 9 he showing 62 scales in 

 the lateral line, for instance. 



AULOPID^J. 



Aulopus filamentosus (Bloch). 



Six from Italy. 



Caloropflthalmus agassizi Bonaparte. 



Icon. Faun. Ital., Pesc. Ill, pt. 1, XXVIII, 1840, descr., PI., fig. 2. Italy. 



No. 7,939 (type) to 7,954, A. N. S. P., cotypes of C. agassizi 

 Bonaparte. 



SYNODONTID^E. 



Trachinocephalus myops (Schneider). 



One from Yokohama, Japan. 



Synodus saurus (Linnams). 



Five from Italy. 



Synodus foe tens (Linnjeus). 



Many examples, from: Beesley's Point, Longport, Atlantic City 

 and Corson's Inlet, N. J.; Ft. Macon, N. C; S. Carolina; Bayport 

 and Marquesas Keys, Fla. 



9 Chauliodus setinotus Bonaparte, Icon. Faun. Ital., Pesc. Ill, pt. 1, XXX, 

 1841, descr., PL, fig. 2. 



