99. LORICARIA. 255 



a. Teeth in both jaws very distinct. 

 * Snout broad, of moderate length ; head without erectile bristles. 



1. Loricaria cataphracta. 



Loricaria dura, L. Mies. Ad. Fred. p. 79. pi. 29. figs. 1 & 2. 



cataphracta, L. Syst. Nat. i. p. 508 ; Cuv. 8f Val. xv. p. 459 ; Kner, 



Panzerwelse, p. 13 (not Bl. Schn.). 

 Plecostomus, sp., Gronov. Mm. Ickth. i. p. 26. no. 69, and Zoophyl. 



no. 392. 

 Loricaria cirrhosa, Bl. Schn. p. 125. tab. 34. 



carinata, Castcln. Anim. Amcr. Sud, Poiss. p. 46. pi. 23. fig. 3. 



Plecostomus flagellaris, Gronov. Syst. ed. Gray, p. 158. 



Snout broad, of moderate length ; eye of moderate size, its vertical 

 diameter being two-thirds or one-half of the width of the interorbital 

 space ; orbit with a small notch in its posterior margin. Intermax- 

 illary teeth few in number, long, twice as long as those of the man- 

 dible, which are more numerous. The labial fold very broad, with 

 numerous papilla? and short barbels. The lower side of the head 

 naked ; the median scutes of the nape bicarinate. L. lat. 33-34. 

 There are from eight to ten lateral scutes between the pectoral and 

 ventral fins. Thorax and belly with numerous small, irregular scutes. 

 The origin of the dorsal fin is scarcely before the vertical from the 

 base of the ventrals. The length of the outer pectoral ray is one- 

 sixth of the total (without caudal filament). The upper caudal ray 

 produced into a long filament ; fins with or without black dots. 



Surinam and northern Brazil. 



a-b. Fine specimens. Surinam. Purchased of M. Kappler. 



c, d, e. Adult and half-grown. 



/. Adult: skin. From Gronow's Collection. 



2. Loricaria macrodon. 

 Kner, Loricar. p. 15. taf. 2. 



Snout broad, the head being scarcely longer than broad ; eye rather 

 small, its vertical diameter being one-half of the width of the inter- 

 orbital space ; orbit with a very shallow notch behind, and with its 

 upper margin slightly elevated and spinous. Intermaxillary and man- 

 dibulary teeth long, of equal length, and few in number. Maxillary 

 barbels well developed, with a row of smaller barbels between them ; 

 the lower labial fold is very broad, and has numerous papillae and 

 short barbels. The lower side of the head naked, the lateral bones 

 rough ; the scutes of the nape with rough keels. L. lat. 32. There 

 are eight or nine lateral scutes between the pectoral and ventral fins. 

 Only a portion of the thorax and belly is covered with small, irre- 

 gular scutes. The origin of the dorsal fin is before the vertical from 

 the base of the ventrals. None of the caudal rays prolonged. Fins 

 with black dots. {Kner.) 



River Cujaba. 



