528 MB. G. A. BOCLENGEE ON FISHES [June 18, 



keels ; diameter of orbit 6 to 6| times in length of head, 3 times 

 in length of snout, 14 in interorbital width; abroad postorbital 

 notch ; lo^ver labial fold moderately large in females, very large 

 and extending to the pectoral shields in males, without notch and 

 without fringe. Dorsal I 7 ; first ray nearly as long as head, 

 just above base of ventral. Pectoral I 6, as long as head to 

 posterior border of orbit, not reaching base of ventral. Ventral 

 I 5, as long as pectoral, reaching origin of anal. Anal I 5. 

 Upper caudal ray produced in a short filament. Lateral shields 

 30, with two spinose ridges approximating on the 21st or 22nd ; 

 ■ nuchal shields \\ithout keels ; 18 shields between dorsal and 

 caudal, 16 between anal and caudal. Breast and belly shielded ; 

 pectoral shields numerous, polygonal, irregular ; ventrals 4 to 6 

 transversely enlarged ones on each side, and one or two series of 

 smaller ones in the middle. All the shields finely granulate and 

 spinulose. Olive above ; dorsal and caudal with small dark spots 

 along the rays ; pectorals and ventrals blackish. 



Total length 220 millim. 



Three specimens from Paraguay. 



This species is allied to L. nudirostris, Kner, and L. spiccii, Stdr. 



11. LOEIOAEIA APELTOGASTEE, sp. n. 



A few slender teeth in both jaws. Head shghtly longer than 

 broad, 5 times in total length ; snout acutely pointed, feebly pro- 

 jecting beyond the lip ; head-shields strongly spinulose ; occipital 

 shield with two closely approximated, parallel keels ; diameter of 

 orbit 7^5- to 8 times in length of head, 4 times in length of snout, 11 

 to 1| in interorbital width ; no postorbital notch ; lower labial fold 

 rather large, with long fringes ; barbel long. Dorsal I 7 ; first 

 ray a little longer than the head, just above base of ventral. 

 Pectoral I 6 ; first ray more or less produced, at least as long as 

 the head, reaching much beyond base of ventral. Ventral I 5 ; 

 first ray produced, but shorter than pectoral, reaching much 

 beyond origin of anal. Anal I 5. Upper caudal ray produced in 

 a very long filament. Lateral shields 31 or 32, with two spinose 

 ridges uniting on the 17th to 20th ; nuchal shields bicarinate ; 21 

 or 22 shields between dorsal and caudal, 19 or 20 between anal 

 and caudal. Breast and belly naked, or with small stellate shields ; 

 a series of 6 to 8 small transverse shields may be present on each 

 side of the belly. All the shields finely granulate and spinulose. 

 Pale brown above, with three or four darker cross-bars on the 

 body and two on the head ; fins partially blackish. 



Total length 210 millim. 



Four specimens from Paraguay. 



This fish is allied to L. niidiventris, C, & V., L, evansii, Blgr., 

 and especially to L. macrodon, Kner. 



12. Teteagonopteetts teenetzi, sp. n. 



Depth of body 1| to 14 in total length : length of head 3i to 3| 

 times. Diameter of eye 2i to 2| times in length of head, twice 



