e 
1871.] d3 [Cope. 
block of lime slate from Chiapas, Mexico. The body is seen in profile, 
but the head has been pressed from above, and the view is therefore 
oblique. i 
The general form is elongate. The pectoral fins are inserted at the 
pectoral plane, and are of moderate length. The ventrals are short and 
small. It is uncertain whether they reach the anal, as the anterior part 
of that fin is destroyed. rom the small number of interhemal spines, 
the anal has probably hada short basis. Caudal lobes narrow. A strong 
horizontal interneural spine. The anterior interneurals are like those of 
Megalops, slender, gently curved rods, apparently, but not really contin- 
uous with the neural spines in some places. The dorsal fin laid back- 
wards extends to the emargination of the caudal. The vertebre near the 
head are not altered. There appears to have been a laminiform crest on 
the head, but the bones thus described may be those of the opposite side 
of the cranium. The muzzle appears to be contracted and projecting 
beyond the mouth. Three narrow obtuse teeth appear on the edge of 
the premaxillary bone. Dentary bone, stout. Orbit, round, large; 
entering 4.66 times the head to the posterior margin of the operculum, 
and 1.38 times the length of the muzzle. Operculum rounded. 
Hadi; D. 2. 13. 4, 0.7.2. 6,0, Aa 2 Val i PS apparently not 
numerous, but very numerously divided. There are about twenty-five 
longitudinal series of scales at a point a short distance anterior to the 
ventral fins. 
M. 
Total lengthovg .cesho scan ease Jee Me. Benp aD. 6 0.580 
duenoth to orbityicas 2 a ees eS one. ay 024 
Vertical didmeterof orbit. caves Gh. ek Ate 8 : .018 
co dentity bonerene eda s ee. -016 
lngnethsto eperculan bordéts ia 4.00 ial. a wed eos add -086 
VSR TIS 254 os, DAGON) TORE Be 310 
= Gotsdle sa wise Opus Je cust Leese Be 363 
c DASISECAUM ST Ne, ER. OAR 1 OUTO0.8 .880 
Depth at pectoral Nine aaio sk BOSE Oe has ok 085 
as VOLTA io Sih IU a A SIP at 074 
a posterion margin dorsalie: 3.2) tees ie 04 
e HRI TCHNGAi a ee vat SSE .02 
This species was found near Tuxtla Chiapas, Mexico, by Dr. J. Berendt, 
and by him sent to the Smithsonian Institution. Mus. No. 9819-20. 
Fam. (?) CHARACINID 2A. 
ANADOPOGON, Cope. 
Mouth opening almost vertically upwards. Dentition weak, consisting 
of lancet shaped teeth on the dentary and premaxillary bones; maxillary 
without or with minute teeth. Post-temporal bone large. Scales with few 
radii, no concentric grooves or cells. 
