On the Eremophilus and Astrohtepiis. 331 



it has no swim or air-bladJer. The length of this fish is 

 from 10 to 11 inches, and its body is covered with a mucus 

 conjmon to the greater part of the upodts. It inhabits the 

 Utile river -of Bogota, that forms the famous cataract of Te- 

 quendama. Tiie captain is a very agreeable aliment, and so 

 much the more precjous, that without it the inhabitants of 

 the capital of Santa Fe, in the time of Lent, would be re- 

 duced to the use of only salted sea-fish brought from a great 

 distance. I have given this species the trivial name Miitisii 

 in honour of the celebrated naturalist, whose rich cqllec'^ 

 tions ure preserved in the great valley of Bogota. 



The Utile river of Palace, near Popayan, nourishes another 

 fish, which, by its mucosity and the position of its fins, haa 

 some relation with the eremophilus, hut which ought also to 

 constitute a new genus of apodes. The breadth of its head 

 is greater than that of the body ; its eyes placed on the 

 upper part of the head, and turned so that the pupils are 

 directed, like as in the uranoscopui mus, towards the surface 

 of the water ; the indenting of the first radii of the fins, the 

 branchial membrane of four radii; the tongue; the want of 

 barbilloiis or whiskers on the nostrils ; and the dorsal fin, 

 which approaches more to the head than the tail; suffi- 

 ciently distinguish the pescado negro (black fish) of Popayan 

 frum the capilan of Santa Fe. I have given the name of 

 a^trollepwi U) this genus, in allusion to the extraordinaiy 

 situation of its eyes. 



AS TROBLEPUS. (See Plate VIII.) 



Apod. CiiARACTiiii Genekicus Essentialis. 



Corpus pIagiop[atemn. Memhrana Iranchiostega xfldi'is '^^ 



OcuU verilcales. Cirri 2 maxillaresy nasales milli. 



A. Grixalvii. 



Corporc ex olivaceo nigrescent/, capite S7iltruncato, rsdiis 



pitmarum exteriorihus sarratis. 



Corpus plagioplatcum, oblongum, nudum, olivaceo-nigres- 



cens, caudam versus ungustatum, subconiprcssum. Caput 



obtusum, magnum, subtruneatum. Cini 2, apicc rccurv'i 



ct sublati, ricto m labio siiperiori adnati. Maxill.i labiata, 



iubio superiori majori plicatili. Lingua nulla. Nares 2 



m3c:Ma'. 



