1910.] AND INVERTEBRATES OF ST. HELENA. 113 



Schlegel, Fauna Japonica, 1850; Giinther, B. M. Cat. Fishes, ii. 

 1860; Bleeker, Verh. Batav. Genootsch. Makr. xxiv., 1852. 



Scomber quadripunctatus Geoffroy St.-Hilaire, Descr. Egypte, 

 Poissons, 1827. 



Euthynnus alliteratus Jordan & Gilbert, Syn. Fish. N. Amer., 

 Bull. U.S. Nat. Mus. No. 16, 1882. 



Gymnosarda alleterata Dresslar & Fesler, Bull. U.S. Fish. Comm. 

 vol. vii., 1889. 



Thynnus thunnina Kitahara, Journ. Fish. Bur. Tokyo, 1897. 



It is evidently desirable to separate the bonitos, in which the 

 body is entirely scaleless behind the corselet, from the tunnies ; 

 and for this genus I have adopted the name Gymnosarda, ori- 

 ginally proposed by Gill in 1862 and used by Dresslar and Fesler 

 and by Jordan and Evermann. 



The distribution of this species seems to be very similar to that 

 of the three species of albacore. It is mentioned by Kitahara 

 under the name Thynnus thunnina as being not very common on 

 the coasts of Japan. Also by Day in his ' Fishes of India ' ; he 

 says it is often seen in the markets of Bombay in the cold weather. 

 It is stated by Bleeker to occur in the Malay Archipelago ; but it 

 is absent from Gilchrist's South African list. It has long been 

 known to occur in the Mediterranean. 



I saw only one specimen at St. Helena, and this was entangled 

 in a mackerel-net of English make with which I was experimenting 

 for the capture of Scomber colias. The specimen was 2 ft. 6| ins. 

 long, a female. Bonitos of this species are occasionally taken by 

 the albacore-boats of the island, but they are not much esteemed 

 as food, and are of far less value than albacore. 



THYRSITES PROMETHEUS. 



Thyrsites prometheus Giinther, B. M. Cat. Fishes, ii. p. 351 ; 

 Melliss. 



Prometheus atlanticns Lowe, Proc. Zool. Soc. 1839, p. 78; id. 

 Trans. Zool. Soc. ii. p. 181. 



Gempylus prometheus Webb & Berthelot, lies Canar., Poiss. 

 p. 51, pi. xi. 



Night Serpent, Melliss. 



D. 17 ; Y. 19, not 18/21 as in Giinther. Spines representing 

 pelvic fins very minute. I obtained only one specimen of this 

 fish, which was caught on a mackerel-line at night off Egg Island ; 

 it was 13 inches long to the end of the middle caudal rays, 14 inches 

 to the end of the lobes of the forked tail. It is of a uniform black 

 colour, and is not eaten. It occurs both in the Atlantic arid the 

 Pacific, namely at Madeira, the Bermudas, off the coasts of Japan, 

 and very young specimens taken by the ' Challenger ' north of the 

 Sandwich Islands have been identified as of this species. 



Platophrys podas. 



Pleuronectes podas De la Roche, Ann. Mus. xiii. p. 354, 1809. 

 Pleuronectes mancus Risso, Ichth. Nice, p. 317, 1810. 

 Proc. Zool. Soc— 1910, No. VIII. 8 



