70 CALIFORNIA ACADEMY OV SCIENCES 



Family TUK'IIIURIIU':. 



129. Trichiurus lepturus Linmius. 

 Recorded from Panaiiia l)y .Ionian aiul Bollmaii, 1881), p. 180. 



Family NEMATISTIID/E. 



130. Nematistius pectoralis Gill. 



Prohably rare as far south as Panama; only three or four seen. 



The followint;: measurements are from u s{)ecimen 30 cm. in lengtii. 



Head 3^ in length; depth SJ. Eye o in head; snout 3^; maxillary 2,'n; 

 interorbital (bone) 3J. Dorsal VIII-I, 2G; anal T, IG. Gill-rakers 3 + 9, the 

 longest two-thirds the diameter of the eye. 



Family CAllANGIDiE. 



131. Oligoplites saurus {Block d- Schneider). 



Not uncommon in the market, though much less abundant than 0. miindus. 



The top of head and nape are smooth and without conspicuous pores iu saurus 

 and there is no membrane connecting the anterior branchiostegal rays of the two 

 sides. Our material shows that no reliable character can be drawn from the com- 

 parative size of the lowest suborbital bone and the next above. In saurus the lowest 

 suborbital seems constantly narrower than the one above it, but they vary greatly in 

 size, sometimes differing on opposite sides of the same specimen. Larger specimens 

 have proportionately deeper bodies, so this character also must be used with caution. 



We have compared our material with specimens from the Atlantic, and can 

 appreciate no difference whatever. 



