502 PLEURONECTID^, 



23. Cynoglossus melanopterus. 



? Plagusia monopiis, Bleeh. Verhand. Bntav. Gmootsch. xxii. Bali, p. 11. 

 Plagiisia melanoptera, Bleek. I c. xxiv. Pleuron. p. 25, or NatuurJc. 



Tydsch: Nederl Ind. i. p. 415. 

 Areiia ceratophrys, Kaup, I. c. 

 D. 114-118. A. 92-95. C. 8-10. V. 4-5. L. lat. 110-120. 

 Two lateral lines on the left side, separated by seventeen longitu- 

 dinal series of scales, and a single one on the right. Two nostrUs, one 

 in the middle before the eyes. Eyes situated on a pair of styliform 

 prominences, small, subcontiguous, the upper in advance of the lower. 

 Lips not frmged. Eostral hook short ; the angle of the mouth is 

 nearer to the extremity of the snout than to the giU-opening. The 

 height of the body is contained four times and a half or four times 

 in the total leng-th, the length of the head five times or five times 

 and a third. Brown ; dorsal and anal fins with a broad black margin 

 posteriorly. 



Java, Sumatra, and Bali. 

 «. From Dr. P. v. Blocker's Collection. 



24. Cjrnoglossus senegalensis. 



Areiia senegalensis, Kanp in Wiegm. Arch. 1858, p. 108. 

 D. 133. A. 109. C. 10. V. 4. L. lat. 140. 



Two lateral lines on the left side, separated by eighteen longitu- 

 dinal series of scales at the point of their greatest distance. Two 

 nostrils : one between the eyes, the other before the lower angle of 

 the lower orbit. Lips not fringed. The length of the snout is con- 

 tained twice and two-thirds in that of the head ; the rostral hook 

 terminates behind the symphysis of the mandibles. The height of 

 the body is a little more than the length of the head, which is one- 

 sixth of the total length. Uniform greenish-olive. 



West Africa. 

 a-c. Eight inches long. Presented by A. Mxirray, Esq. 



II. Two nostrils, in front of the lower eye, the lower nostril being wider 

 than the upper. 



25. Cynoglossus cantoris. 



Plagusia potous, Cant. Catal. p. 235 (not syn.). 



canton, BleeJc. Enwner. p. 185. 



Cantoria pinangensis, Kaup in Wiegm. Arch. 1858, p. 106. 



D. 126-127. A. 94-95. C. 10. V. 4. L. lat. 70. 

 Two lateral lines on each side, separated in the middle by seven 

 or eight longitudinal series of scales. Only the left ventral is present, 

 composed of four rays and contiguous with the anal. Two nostrils, 

 one of which is very small, above the upper lip, in front of the lower 

 eye. The upper eye is scarcely in advance of the lower ; the width 

 o'f the intcrorbital space equals that of the orbit. Lips not fringed. 



