THE AMERICAN TETRAGONOPTERINAE. 175 
rr. Second suborbital in contact with the preopercle. 
u. Large caudal spot; humeral spot intense; lateral 
stripe black, linear, most intense over the middle 
of the anal, disappearing below the origin of 
the dorsal, and becoming very faint before it 
reaches the caudal spot. Lateral line with pores 
on 5 to 7 scales. Maxillary with one small 3- to 
5-pointed tooth. D.11; A. 18 to 21; scales 6 to 
7-31 to 344 or 5.....27. recticulatus Ellis. 
uu. Intense caudal spot; humeral spot dim and verti- 
cally elongate. Lateral stripe plainly continu- 
ous with the caudal spot. Caudal spot continued 
to the end of the middle caudal rays. Eyesmall, 
3 to 3.5, interorbital 2.8-3 in the head. D. 11; 
A. 16 to 18; scales 5 or 6-36—-4 or 5. 
28. duragenys Ellis. 
uuu. No caudal spot. Humeral spot faint and vertically 
elongate. Lateral stripe broad, continued to 
the end of the middle caudal rays. Eye small 4, 
interorbital 2-2.6 in the head. D.11; A. 16-18; 
lateral line 36.....- 29. poeciloides Bigenmann. 
No caudal spot, humeral spot developed, cheek partly naked. (See also poeci- 
loides). 
v. Humeral spot not continued backwards. 
w. Humeral spot much nearer to the posterior 
margin of the eye than the dorsal. 
xz. A black line along the middle of the sides. 
Maxillary with one or more, usually two, 
conical or 3-pointed teeth. Humeral 
spot round or oval. Mouth large; D. 11; 
A. 22-26; scales 5-31 to 33-3 to 3.5. 
30. bellottii (Steindachner). 
zz. Two vertical humeral spots, a series of v- 
shaped lines along the middle of the sides. 
Young uniformly dotted. Maxillary with 
one moderately large 3- to 5-pointed tooth. 
D. 11; A. 29 to 32; scales 6 or 7-33 to 
36-Dn0r One eeee ree 31. bifasciatus Ellis. 
zrx. Humeral spot very faint; maxillary with 
seven small conical teeth. A. 20; scales 
5-33-3.......-- 32. catableptus (Durbin). 
ww. Humeral spot round, with vertical elongations, 
equidistant from the posterior margin of the 
eye and the base of the first dorsal ray; 
mouth only moderately large. Maxillary 
with three broad, 4- to 7-pointed teeth. 
D. 11; A. 26 to 31; scales 6-33-4.  * 
33. stictus Durbin. 
www. Humeral spot vertical, conspicuous; maxillary 
with 0-3 minute teeth; A. 22-24; scales. 
34. ecuadoriensis Eigenmann and Henn. 
vv. Humeral spot not separable from the conspicuous 
lateral band. 
y. Lateral band bordered above with silvery. 
First six anal rays elongate. Maxillary, 
with four conical teeth. Origin of the 
anal under the last dorsal ray. D. 11; 
A. 20-23; scales 5-32 to 34-8. Hye 
2.5 in the head. 
35. heterorhabdus (Ulrey). 
