50 CALIFORNIA ACADEMY OF SCIENCES. 



SS. Pectoral spine reaching halfway to the tip of ven- 

 tral, or longer; jaws subeqnal; posterior margin of 

 the eye about 1 diameter in front of the middle of the 

 head. Occipital process not greatly narrowed behind. 

 Teeth on the palate 40 or more, in larger patches, the 

 teeth smaller than in spixii. furihi 62 



PP. Soft portions of the head pitted; length of head to end 

 of occipital process little less than 3 in the length, granular 

 portion ^ longer than smooth portion of the head. Fontanel 

 not continued as a groove. Maxillary barbels extending 

 beyond middle of pectorals. A. 22 or 23 (Cu\. & Val.) 



variolosus 63. 

 MM. Anal rays 27. (Kner & Steind.) multiradiatiis 64.. 



A A. Eye not above the level of the mouth; gill-rakers long and slender, 

 40 or more. (Cathorops.) 



T. Upper jaw much produced; interocular 2\ in head; mouth 2| in 

 head. Vomerine patches of teeth separated by an interval equal to 

 1 diameter of the eye, scarcely distinguishable from the palatine- 

 patches; palatine teeth forming a large oblong patch on either side 

 which is broadest behind. hypophthalmus 65 



TT. Jaws subequal; interociilar 1| in head; mouth 2 in head. Pala- 

 tine patches of teeth about 1^ diameters of the eye apart, the teeth 

 in about 3 series in front, in a single series behind. gulosus 66. 



23. Tachisurus lentiginosus. 



Tachisuriis lentiginosus Eigenm. & Eigenm. Proc. Cal. Acad. 2d Ser. 



vol. i, 1888, 139 (Panama). 

 Habitat: Panama. 



Body nearly terete anteriorly, becoming compressed 

 backward; the width, above the pectorals, a little greater 

 than the depth. Head flat, depressed, its depth at base 

 of occipital process 1^ in its greatest width which is 

 about 11 in its length. Occipital process somewhat 

 roughened, about twice as long as its greatest width, its 

 margin straight and oblique; the middle of the fonta- 

 nel above the posterior part of the eye. Head every- 

 where covered with skin; sides of the head and opercle 

 with vermiculating canals. 



Eye 2h in snout, 8| in hea'd, 4h in interocular, 21 in 

 interorbital. 



Snout somewhat pointed; upper jaw very little pro- 

 jecting; lips thick; teeth all villiform; the intermaxil- 



