194 Mr. C. T. Regan on the 



To he treated as non-existent. 

 Species the types of which are not noio to be found in the British Museum. 



Spiniffcr hipustulatus, Walk. Cat. Ilet. vii. p. 1G3. n. 55 (1873). 

 Acctnthaspis inaqualis, Walk. loc. cit. p. IGd. d. 5. 

 lieduvins 2)ijrrhoph(jrus, Walk. loc. cit. p. 196. n. 48. 

 Co7ior/iinus arenarius, Walk. loc. cit. vii). p. 18. n. 28. 

 ryyolainpis concolor, Walk. loc. cit. p. 37. n. 19. 



XXVIII. — A Revision of the Fishes of the Family 

 Stromateidaj. By C. Tate Regan, B.A. 



[Concluded from p. 131.] 



Centrolophus. 



Centrolophus, Lacep. IIi.st. Nat. Poiss. iv. p. 441 (1802). 

 Po7)ipilus, Lowe, Proc. Zool. Soc. 1839, p. 81. 



This genus is distinguished from Lirus by the elongated 

 body and the maxillary slipping under the prasorbital for the 

 entire length of its upper edge. The spines of the dorsal and 

 anal are slender, indistinct, and graduating. Seven branch io- 

 stegals. 25 vertebrae 



Synopsis of the Species. 



a. Lateral Hue with a short curve above the pectoral, 



thence running along the middle of the body. 



D. 45. A. 30 I. C. brittanicus. 



b. Lateral line with a rather long curve. D. 37-41. 



A. 23-25. 



Dorsal fin rounded 2. C. niycr. 



Dorsal fin slightly emarginate in its posterior half . 3. C. maoricus, 



Centroloi^hus brittanicus, Gthr. 

 Centrolophus brittanicus, Giiuther, Cat. ii. p. 402 (1860). 



This species is known only from one specimen from Pol- 

 perro, Cornwall, which is not well stuffed, so that accurate 

 measurements are not possible. The body seems to be rather 

 more elongated than in G. niyer, the head rather smaller. 

 D. 45. A. 30. The fin-rays are broken off short. The 

 base of the dorsal is longer relatively to the total length of 

 the body, the base of the anal shorter than in C. niyer. 

 Lateral line with a short curve above the pectoral, then 

 running along the middle of the body. In other characters 

 very similar to C. niyer. 



Total length 520 millim. 



