18 



POLTPTEEID^. — DIPNEFSTI. 



1. CALAMICHTHYS OALABARIOUS. 



Erpetmchthys calabaricus, J. A. Smith, Proc. Phys. Soc. Edinb. 1865, p. 278. 



Calamoicldhys calabaricus, J. A. Smith, Proc. R. Soc. Edinb. v. 1866, p. 656, and Tr. 

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

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

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

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

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



Head small, feebly depressed, If 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 



rig. 13. 



Calamiclithys calabaricus. 

 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. 



3. Ad., skel. 



4. Ad. 

 ■5-6. Ad. 



7-10. Ad. & hgr. 

 11. Ad. 

 12-13. Ad. 



Niger Delta. 



Sapelle, Niger Delta. 



Creektown, Old Calabar. 



Cameroon. 



Mouth of Chiloango. 



West Africa. 



A. Millson, Esq. (P.). 



It 



Dr. W. J. Ansorge (C). 

 Rev. A. Robb (C). 

 D. G.Rutherford, Esq. (C.) 

 H. J. Duggan, Esq. (C). 



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. 



