21. oriiicHTHYs. 77 



thirds of the length of the snout, and situated in the anterior thii'd 

 of that of the liead. Teeth jjointed, fixed, unequal in size ; the in- 

 termaxillary teeth are the largest, arranged in a curved transverse 

 series ; maxillary and maudibulary teeth forming a tri- or quadri- 

 serial baud in adult examples, biserial in smaller individuals. 

 Vomerine teeth in a single series. Length of the pectoral fin rather 

 more than one-third of that of the head ; dorsal fin low, com- 

 mencing opposite to the extremity of the pectoral. Tail longer than 

 the body. 



ChUe and Peru. 



a. TVeuty-five inches long. Chile. From the Godeffroy Collection 

 as 0. remiger. Teeth of the jaws quadriserial. 



b-d. Sixteen inches long. TamboKivor. Pui-chasedof Mr. Whitely. 

 Teeth of the jaws biserial. 



Although this species is allied to 0. remi\/er (with which it lias 

 been confounded by Prof. Kner), it is c^•idently distinct, having a 

 longer head aud a different dentition. 



II. Teeth yramdar. 

 A. Pectoral developed; dorsal commencing behind the base of th^ pectoral. 



4S. OpMchthys boro. 



Ophisurus boro, Ham. Buch. Fish. Ganq. pp. 20, 363 ; Gray. III. Ind. 



Zool. ; MClell. Vale. Juurn. Nat. Hik. v. p. 211; Richard.^. Ichth. 



Chin. p. 313, and Voy. Ereb. ^- Terr. Fish. p. 99; Bleeh. Verh. 



Bat. Gen. xxv. Beng. p. 15G ; Cant. Mai. Fish. p. 322, pL 5. fig. 2 



(teeth). 

 haraucha. Ham. Buch. I. c. pp. 21, 363 ; Gray, I. c. ; M'Clell. I. c. 



tab. 12. tig. 4. 



caudatus, 3I'Clell. I. c. p. 185, tab. 12. fig. 3. 



Conger microstoma, Eyd. S,- Soul. Voy. Bonit-e, i. p. 205, Poiss. pi. 0. 



fig. 3 (if this identification of Ilr. Kaup is correct, the figure is 



eiToueous). 

 Ophisurus potauiophilus, Bleek. Nat. Tydschr. Ned. Ind. v. p. 458, 



or Terh. Bat. Gen. xxv. Murccn. p. 68. 

 Pisoodonopbis boro, Kaup, Apod. p. 17; Bleek. Atl. Ichth. Muran. 



p. 62, tab. 20. fig. 3 ; Day, Fish. 3Ialab. p. 248. 

 potamophilus, Kaup, Apod. p. 20 ; Bleek. I. c. p. G3, tab. 28. 



fig. 2. 



Coloration uniform. The length of the head is coiitained from 

 thrice and a half to four times and a half in the distance of tJie 

 (jill-ojyenini/ from the vent; the length of the body is three-fourths 

 or two-thirds of that of the tail. Cleft of the mouth of moderate 

 width, extending behind the eye ; snout depressed, obtuse in old 

 examples, aud rather more pointed in young. Eye small. Teetli 

 granular, in several series, forming bands which are broader in adult 

 examples than in young. Length of the pectoral fin one-fourth or 

 (Hic-sixth of that of the head ; dorsal fin commencing at some dis- 

 tance behind the end of the pectoral ; dorsal and. cspecialhj. anal 

 Jins low. 



East Indies, sea and fresh waters ; ? Tropical America. 



