21. OPHICHTHYS. 77 



thirds of the length of the snout, and situated in the anterior third 

 of that of the head. Teeth pointed, fixed, unequal in size ; the in- 

 termaxillary teeth are the largest, arranged in a curved transverse 

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

 serial band in adxilt 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* 



Chile and Peru. 



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

 as 0. remiger. Teeth of the jaws quadriserial. 



h-d. Sixteen inches long. TamboKiver. Purchasedof Mr. Whitely. 

 Teeth of the jaws biserial. 



Although this species is allied to 0. remiger (with which it has 

 been confounded by Prof. Kner), it is evidently distinct, haA^ing a 

 longer head and a different dentition. 



n. Teeth gramdar. 

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



48. OpMchthys boro. 

 Ophisurus boro, Ham. Bmh. Fish. Gang. pp. 20, 3G3 ; Gray, III. Ltd. 



Zool. ; M' Clell. Calc. Joum. Nat. Hist. v. p. 211 ; Richards. Ichth. 



Chin. p. 313, and Voy. Ereh. 8f Terr. Fish. p. 99 ; Bleek. Verh. 



Bat. Gen. xxv. Beng. p. 150 ; Cant. Mai. Fish. p. 322, pi. 5. fig. 2 



(teeth). 

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



tab. 12. fig. 4. ^' ' 



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



Conger microstoma, Fgd. ^ Soul. Voy. Bonite, i. p. 205, Poiss. pi. 9. 



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



erroneous). 

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



or Verh. Bat. Gen. xxv. Murcen. p. 68. 

 Pisoodonophis boro, Kaup, Apod. p. 17; Bleeh. Atl. Ichth. Murcm. 



p. ()2, tab. 20. tig. 3 ; Bay, Fish. Malab. p. 248. 

 potamophilus, Kaup, Apod. p. 20 ; Bleek. I. c. p. 63, tab. 28 



fig. 2. 



Coloration uniform. The length of the head is contained from 

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

 gill-opening 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, and rather more pointed in young. Eye small. Teeth 

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

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

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

 tance behind the end of the pectoral j dorsal and, especially, anal 

 fins low. 



East Indies, sea and fresh waters : ? Tropical America, 



