XEXOCARA.— LOEICAEIA. 113 



4. XENOCARA, Regan. 



Xenocara, Regan, Trans. Zool. Soc. xvii. 190i, p. 2")!. 



Similar to Ancistrus, but tho snout with a naked margin, whieli is usually broarler in males than in females 

 and bears fleshy tentacle-like processes, which are more developed in the males. 



Twelve species from Tropical America. 



1. Xenocara cliagresi, Eigenm. 



Xenocara chayresi, Regan, Trans. Zool. Soc. xvii. 190i, p. 2,56, t. 14.. fig. 7. 



Dorsal I 7. Anal I 3-4. 24 scutes in a loii.nitudinal series, none of them keeled. Interopciculuin armed 

 ■with about 10 spines. Olivaceous ; a dark spot at the base of the first interradial membrane of the 

 dorsal. 



Hab. Panama, Rio Chagres. 

 Total length 175 mm. 



5. LORICARIA, Linn. 



Lorkaria, Regan, Trans. Zool. Soc. xvii. 1904, p. 270. 



Body elongate, protected by bony scutes : caudal peduncle depressed, with paired dorsal and ventral series of 

 scutes and posteriorly with a single lateral series of scutes on each side. Snout pointed or rounded. 

 Teeth bifid, in a single series, xln orbital notch. Xo adipose fin. 



Forty-two species from Panama and South America. 



1. Loricaria uracantha, Kner & Steind. 



Loricaria uracantha, Kner & Steind. Abliandl. Bayer. Ak. \. 1805, p. 56, t. 6. fig. .3 ; Regan, 



Trans. Zool. Soc. xvii. 1904, p. 278. 

 Loricaria lima, Kner & Steind. t. c. p. 58. 

 ? Loricaria bransfordi. Gill, Proc. Ac. Pliilad. 1876, p. .338. 



Lips papillose, with short marginal fringes. Snout pointed. Males with bristles on the sides of the head, 

 the occipital region and nuchal scutes, and the pectoral fins. 2S scutes in a longitudinal series. Abdomen 

 covered with y or 4 series of plates between the lateral series. Upper caudal ray strong, stout, spinous. 



Hnh. Panama. 



Total length 180 mtn. 



2. Loricaria variegata, Steind. 



Loricaria variegata, Steind. Denksclir. Ak. "Wien, xli. 1879, p. 165, t. 3 ; Regan, Trans. Zool. Soc. 

 xvii. 1904, p. 293. 



Lips with filiform papilla) and long marginal fringes. Snout obtuse. 30 to 32 scutes in a longitudinal series. 

 Abdomen naked except for the lateral series of plates and a median strip of smaller plates. Uppermost 

 caudal ray elongate. Head, body, and dorsal, caudal, and pectoral fins with numerous dark oblong spots. 



Ilah. Panama, Rio Mamoni. 



BIOL. CENTE.-AMER., Pisces, July 1907. Q 



