2. RiiAMPnicnTnrs. 



a. Rhamphichthys. Snotif produced into a tube ; vent below or in advance 

 of the eyes; anal Jin commencing at the throat. 



1. Rhamphichthys rostratus. 



Seba, iii. tab. 32. fig. 5 (ii. tab. GU. no. 3? V). 



Gyiniiotus, sp., Gronov. Zoophi/l. no. 167 ; Mas. Ichth. no. 73. 



Gymnotus rostratus, L. ISyd. N<d. i. p. 428 ; Gronov. Si/st. ed. Gray, 



p. 22. 



longirostratus, Lacep. ii. p. 178. 



Rhamphicbthy.s rostratus (part.), Miill. i^- Trosch. Ilor. Ichthyol. iii. 



p. 15; Steinddclinvr, Sitzf/'ih. Ak. Wiss. Wien, 18<iS, hiii. p. 256. 

 scbomburgkii, Kuup, Apod. p. 135, fig. 10 ; !:>tcindachner, I. c. 



p. 258. 

 schneideri, Kaup, Apod. p. 136, fig. 11. 



The distance of the centre of the eye from the gill-opening is one- 

 half or nearly one-half of that from the end of the snout. Scales 

 very small, only those near the lateral line (which is naked) being 

 a little larger. Brown ; head, body, and fins with darker, sometimes 

 ocellated spots. 



In full-grown examples (35-37 inches) the vent and urogenital 

 papilla is placed far in advance of the eyes, whilst in younger indi- 

 viduals (24-30 inches) it is below or but slightly in advance of the 

 eyes. 



Guyanas. 



a, h-c. Fine specimens, 30-34 inches long. Surinam. From Hr. 

 Kappler's Collection. 



d. Adiilt. Surinam. From the Collection of Dr. van Lidth do 



Jeude. 



e. Half-grown. British Guyana. 



2. Rhamphichthys blochii, 



Gymnonotus rostratus, Bl. Schn. p. 522, tab. 106 (not L.). 

 Rhamphichthys reinliardtii, Kaup, Apod. p. 132, tig. 8. 

 blochii, Kaiip, Apod. p. 133, fig. 9. 



The distance of the centre of the eye from the gill- opening is 

 two-thirds of that from the end of the snout. Scales very small, 

 only those near the lateral hue being larger ; head, body, and anal 

 fin with irregular brownish-black spots and dots. 



The vent is below the eye in a specimen 19 inches long, some- 

 what before the eye in one of 2b inches, and considerably in advance 

 of it in a third of 29 inches. 



Brazil. 



a. Nineteen inches long. Para. (Xamedi?^. rosfrrt^Msby Dr. Kaup.) 



3. Rhamphichthys pantherinus. 



Rhampliiclithys niarmoratus, Casfel. Anim. Amer. Sud, Poiss. p. 86, 



pi. 46. fig. 2 : Kaup, Apod. p. 132, tig. 7. 

 pantherinus, Castel. I. c. tig. 3 ; Kaup, Apod. p. 131, fig. 0. 



