70 CALIFOBNIA ACADEMY OF SCIENCES 



Family TEICHIURID^. 



129. Trichiurus lepturus Linnaus. 

 Recorded from Panama by Jordan and Bollman, 1889, p. 180. 



Family NEMATISTIIDiE. 



130. Nematistius pectoralis Gill. 



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



The following measurements are from a specimen 30 cm. in length. 



Head 3| in length; depth 31. Eye 5 in head; snout 3^5; maxillary 2^; 

 interorbital (bone) 3|. Dorsal VIII-I, 20; anal T, 16. Gill-rakers 3 + 9, the 

 longest two-thirds the diameter of the eye. 



Family CAEANGID^. 



131. Oligoplites saurus [Block X- Schneider). 



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



The top of head and nape are smooth and without conspicuous pores in smirus 

 and there is no membrane connecting the anterior bninchiostegal 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. 



