IS POLYPTERID,E.— D1PNEUSTT. 



1. CALAMICHTHYS CALABARIOUS. 



Erpetoiehthys calaharicus, J. A. Smith, Proc. Phys. Soc. Edinb. 1865, p. 278. 



CalamoicJitJit/s calaharicus, J. A. Smith, Proc. Pi. Soc. Edinb. v. 1866, p. 656, and Tr. 

 R. Soc. Edinb. xxiv. 1866, p. 457, pis. xxxi. & xxxii. ; A. Duin. Hist. Poiss. ii. 

 p. 397, pi. xxiv. fig. 1 (1870) ; Gimth. Cat. Fish. viii. p. 328 (1870) ; Traquair, 

 Journ. Geol. Soc. Ireland, (2) ii. 1871, p. 249 : Clemens, Anat. Hefte, v. i. 

 1894, p. 16, pi. ix. figs. 7 & 8 ; Bouleng. Ppiss. Bass. Congo, p. 27 (1901), and 

 Proc. Zool. Soc. 1901, i. p. 4 ; Werner, Zool. Jahrb., Syst. xxi. 1904, p. 272. 



Head small, feebly depressed, 1| to 2 times as long as broad, its length 

 11 to 14 times in total length ; snout projecting a little beyond lower 

 jaw ; eye lateral, 7| to 8^ times in length of head, twice in interorbital 

 width. Dorsal with VII-XIII widely separated short spines. Anal 



Fig. 13. 



JH 



'■':-r.^ ? ^::fi' '■-',' H..'.^;' : '.> : -^;'^r^""' 

 ■■■■"';■''■ ' '■"""' - — -—*--. -.-_--,. s,>^- 



Calamicltthys calaharicus. 

 Niger Delta, f . 



9-14. 106-114 scales in a longitudinal series, 30-34 round middle of 

 body. Uniform olive-brown above, yellowish beneath ; a large blackish 

 spot on the pectoral fin. 



Total length 370 millim. 



Niger Delta, Old Calabar, Cameroon, Chiloango. — -The types do not 

 appear to have been preserved. 

 1-2. Ad. Niger Delta. A. Millson, Esq. (P.). 



3. Ad., skel. 



4. Ad. Sapelle, Niger Delta. Dr. W. J. Ansorge (C). 

 5_6. Ad. Creektown, Old Calabar. Rev. A. Robb (C). 



7-10. Ad. & hgr. Cameroon. D. G.Rutherford, Esq. (C). 



11. Ad. Mouth of Chiloango. H. J. Duggan, Esq. (C). 



12-13. Ad. West Africa. 



Order II. DIPNEUSTI. 



Paired fins lobate, or reduced to an endoskeletal axis. Upper segment 

 of the mandibular arch confluent with the skull (autostylic skull) ; no 

 supraoccipital bone ; splenial present. Bulb of aorta muscular, with 

 several rows of valves. Lungs present. 



