1915.] NATURAL SCIENCES OF PHILADELPHIA. 241 



Lorioariichthys anus (Valenciennes). 



Rio Jacuhy, Brazil. One of the smallest examples, 210 mm. 

 long, differs in having the lateral scutes 25+9, which is more in 

 accordance with the characters distinguishing Loricaria spixii 

 Steindachner. In other respects it agrees with the present species. 



Loricaria cataphracta Linnaeus. 



One from Surinam, 228 mm. long (caudal tips damaged). Head 

 width 1| in its length. Internasal region slightly elevated convexly. 

 No lengthmse keels on interorbital and anterior occipital region. 

 Ventral plates medianly in 3 or 4 irregular series. Lower naked 

 surface of head extends rather well back on clavicle region. 



Loricaria carinata Castelnau. 



One from the Rio M-aranon, 185 mm. long (caudal tips damaged). 

 Head width Ij in its length. Internasal region not elevated. Two 

 low lengthwise keels within interorbital space, approximating behind, 

 where they continue closer as better marked supraoccipital keels. 

 Ventral plates medianly in 4 or 5 irregular series. Naked surface 

 of head below not extending on clavicles, which covered with many 

 small plates. This specimen agrees with Eigenmann's photograph. 

 The species is apparently not previously known from the Maranon, 

 Cope having confused it with L. cataphracta. 



Harttia platystoma (Giinther). 



Warraputa Falls, British Guiana. 



Sturisoma guentheri (Regan). 



Peru. This example agrees with Regan's figure and account. 

 Scutes 20 + 16. Sutures on predorsal shield weak, so that it appears 

 as rather large single plate, preceded by 2 more plates to supra- 

 occipital process. Dorsal with traces of faint spots on fin-rays; 

 Cauda! with uppermost and lowermost rays produced (tips damaged), 

 and with several dark spots, arranged mostly as transverse bands. 



CYOLOPIID^. 



Cyolopium sabalo (Valenciennes). 



Rio Urubamba, Peru. 

 Cyclopium cMmborazoi sp. nov. Fig. U. 



Head 3; depth 4; D. I, 5; A. I, 6; P. I, 10; V. I, 8; head trifle 

 longer than wide; snout 2 in head length; eye about 12; mouth 

 width about 3; interorbital about 5|; dorsal spine If; anal spine 

 If; pectoral nearly 1; ventral 1|. 



Body moderately long, compressed, deepest at dorsal origin. 

 Caudal peduncle deep, compressed. 

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