258 S1LTJR1D.E. 



9. Loricaria anus. 



Valenc. in d 1 Orb. Voy. Amer. Merid. Poiss. pi. 6. fig. 1 ; Cuv. fy Val. xv. 

 p. 470. 



Snout broad, of moderate length ; eye rather small, its verticp I 

 diameter being one-third of the width of the interorbital space ; orbit 

 with a shallow notch behind. Teeth minute or, perhaps, absent. 

 Scutes on the nape smooth ; thorax and belly shielded. The two 

 lateral ridges remain separate to the posterior part of the tail, 

 coalescing on or near the thirtieth lateral shield. Back with black- 

 ish cross-bands ; fins with brown dots. (Val.) 



Rio de la Plata. 



10. Loricaria parahemiodon. 



Parahemiodon typus, Bleek. Compt. Rend. Acad. Sc. Amsterd. 1862, 

 xiv. p. 373. 



Snout broad ; the diameter of the eye is rather more than one-half 

 of the width of the interorbital space ; orbit with a deep notch be- 

 hind. Teeth none in the upper jaw, those of the low r er rudimentary. 

 Labial fold exceedingly broad, extending backwards to the base of 

 the pectorals. Thorax and belly with numerous small shields ; there 

 are five lateral scutes between the pectoral and ventral fins. The 

 two keels running along the side of the body coalesce on or near 

 the seventeenth shield of the lateral line. L. lat. 31. The origin 

 of the dorsal fin is somewhat behind that of the ventrals. (Blhr.) 



Surinam. 



11 . Loricaria platycephala. 



Hemiodon platycephalus, Kner, I*oricar. p. 25. taf. 6. fig. 2. 



Head and body much depressed ; nead as broad as long ; snout 

 rather long, of moderate width, with the upper profile concave ; the 

 eye is small, behind the middle of the length of the head ; orbit with- 

 out posterior notch ; its diameter is two-thirds of the width of the 

 interorbital space ; snout with a median groove above ; margins of 

 the snout with dense, short bristles directed backwards. Teeth absent 

 in the upper jaw, few in number in the lower. Scutes of the nape 

 keeled. L. lat. 31. Abdomen with three longitudinal series of large 

 scutes; four lateral scutes between pectorals and ventrals. The 

 origin of the dorsal fin is opposite to that of the ventrals ; the outer 

 pectoral and ventral rays short ; the upper caudal ray prolonged. 

 (Kiusr.) 



Rio Cujaba. 



•* Snout rather producea and pointed in front. 

 12. Loricaria acuta. 



Loricaria acuta, Cuv. $ Val. xv. p. 472. pi. 452 (bad) ; Kner, Loricar. 



p. 21. 

 castanea, Casteln. Anim. Amer. Sud, Poiss. p. 46. pi. 23. fig. 4. 



Snout rather elongate and pointed in front, the greatest width of 

 the head being two-thirds of its length. Eye of moderate size ; pos- 



