FISHES OF THE FAMILY LORICARIIDA, 273 
III. Upper lip very narrow, entire medianly, usually with short fringes laterally ; lower lip 
smooth or in part covered with very small papille, which are sometimes enlarged 
posteriorly, its margin entire or slightly fringed ; barbel not, or not much longer than 
diameter of eye; teeth very small or rudimentary, more numerous in the lower jaw 
than in the upper; an anal plate, bordered anteriorly by 2 or 3; head without, or with 
weak keels. (Loricariichthys Blkr.) 
A. 30-32 seutes in a longitudinal series (18-22 + 9-14). 
a. Breadth of head 14-1} times in its length. 
Length of snout twice in that of the head, interorbital width 
dec NES 9 86 0 0 Oe 5 0 6 0 6 9 6 AOS TESTO Nei 
Length of snout 23-2} times in that of the head, caiterorital 
Widthig) —SsutIMes) as fy) cues Wey Gone | huis Wee ea ell usaty pus) Bikr: 
6. Breadth of head 12 times in its length, length of 
snout 21 times, interorbital width 54 times; 12-15 
teeth in the upper jaw, 18-25 in the lower . . . 22. L. acutaC.& V. 
c. Breadth of head 14 times in its length, length of snout 13-2 times; 3-8 teeth in the 
upper jaw, 5-12 in the lower. 
Interorbital width 5} times in the length of head; 30 scutes in a 
longitudinal series (18+12); all the scutes in front of the 
dorsal’carmate. . « . 3) a hee o weelwr ah ola ine eb Jon De mudirosiris! Kner. 
Interorbital width 44-5 times in the length of head; 30 scutes in 
a longitudinal series (18-21+4+9-12); scutes not carinate 
except for the lateral keels. . . . c . . . 24. L. labialis Blgr. 
Interorbital width 4 times in the length of fea 32 scutes in a 
longitudinal series (22+10) ; scutes not carinate except for 
the laterallikeels) 4. ic © seyasn clues K. sy © cy es «2 RD e Lager Side: 
B. 34-86 scutes in a longitudinal series (29-3442-5). . 26. L. anus C. & V. 
IV. Lips both well developed, covered with filiform or tentacle-like papilla, which are some- 
times very small; marginal fringes long; barbel long or rather long, usually extending to 
the inner angle of gill-opening or beyond; no distinct enlarged anal plate. (Loricaria.) 
A. Snout pointed. 
a. Teeth few, strong, in equal number in both jaws; abdomen naked or nearly so, except 
for the lateral series of plates. 
Supraoccipital with a strong serrated keel; abdomen with a lateral 
series of 8 plates oneachside . . .. . .. . « « 27. L, evansii Blgr. 
Supraoccipital with an obtuse median ridge; abdomen with a 
lateral series of 4 plates on each side . . . . . . « « 28. ZL, nudiventris C. & V. 
b. Teeth moderately strong, about 12 on each side in 
both jaws; supraoccipital with a pair of serrated 
keels; abdomen with 4 or 5 irregular series of plates 
between the lateral series. . . . . . « « « 29. L. macrops Rgn. 
202 
