524 MB. G. A. BOFLENGER ON FISHES [June 18, 



2. Geophagus duodecimspinosus, sp. n. 



Depth of body 14^ in total length, length of head 3 times. Eye 

 nearer gill-opening than end of snout, its diameter 3| times in 

 length of head and a little less than interorbital width ; prae- 

 orhital 1^ diameter of eye; scales on cheek small, in 7 series. 

 Dorsal XII 14; spines increasing in length to the fourth, which 

 is i length of head ; soft portion scaly at the base, longest rays 

 nearly as long as head. Pectoral a little longer than head. Ven- 

 tral shorter, reaching anal. Anal III 9 ; third spine longest, as 



J. 1ft 



long as third dorsal. Caudal truncate. Scales 30 j^ ; lat. 1. j. 

 Yellowish, with a dark vertical streak below the eye, and a dark 

 round spot on the side below the lateral line ; vertical fins 

 brownish, with some smaU, round, white spots on the soft dorsal 

 and anal ; pectorals white, ventrals blackish. 



Total length 90 millim. 



A single specimen from Paraguay. 



3. EUATfEMUS ?fIGEIPINXIS, sp. n. 



Depth of body equal to length of head, 4^ to 5 times in total 

 length ; width oi head equal to length without snout ; groove 

 extending from end of snout to occipital bone; eye as long as 

 snout, 3| times in length of head, half interorbital width ; maxillary 

 barbel extending nearly to end of pectoral spine, mandibular 

 barbels to a little beyond base of pectoral spine. Humeral process 

 covered with skin, | length of pectoral spine. Dorsal I 6 ; spine 

 serrated behind, as long as head. Pectoral spine a little shorter 

 than head. Ventral as long as pectoral, reaching a little beyond 

 orioin of anal. Anal 36-37. Caudal deeply notched. Upper 

 surface of head, back, and a lateral stripe dark grey, rest white ; 

 pectorals and ventrals deep black, white at the base ; caudal black 

 at the base. 



Total length 190 millim. 



Eour specimens from Paraguay. 



4. OXTDOEAS EIGENMAIOfl, Sp, n. 



Both jaws with small teeth. Depth of body equal to length of 

 head, 4 times in total length. Posterior nostril nearer the eye 

 than to the anterior nostril ; diameter of eye 4 times in length of 

 head, I5 in interorbital width, 1| in length of snout; bases of 

 the six barbels united by the fold of the lower jaw ; maxillary 

 barbels with smaller tentacles at the base, extending a little 

 beyond base of pectoral spine, twice as long as mandibulars. Gill- 

 cleft extending to below posterior border of eye. Humeral 

 process striated, half as long as pectoral spine. Pectoral spine a 

 little lono'er than the head. Dorsal I 6 ; spine a little shorter 

 than the head, very strongly serrated in front, very feebly behind. 

 Adipose fin a little shorter than base of anal. Ko shields between 

 the dorsal fins. Lateral shields moderate, third vertical diameter 

 equal to the eye, serrated behind, 26 or 27. Caudal bifurcate. 



