34. CYXOGLOssus. 495 



thirteenth of the length of the head. Lips not fringed. The length 

 of the snout is contained twice and three-fourths in that of the head. 

 The angle of the mouth is somewhat behind the vertical from the 

 posterior margin of the eye, and a little nearer to the extremity of the 

 snout than to the giU-opening. The rostral hook terminates below 

 the symphysis of the mandible. The height of the body is contained 

 four times and two-thirds in the total length, the length of the head 

 five times and one-third. Brownish, with several irregular black 

 blotches on the opercles, the trunk, and front part of the tail. 

 China. 



«. Seven inches and a half long. From the Haslar Collection. 

 b. Adult. China. 



6. Cynoglossus microlepis. 



Plagusia microlepis, Bleek. Nat. Tydschr. Nederl. Ind. i. p. 41.3, and vii. 



p. 99, or Verhand. Batav. Genootsch. xxiv. Pleuron. p. 31. 

 Arelia microlepis, Bleek. Entim. p. 184. 



D. 123. A. 97. V. 4. L. lat. 150. 



Three lateral lines on the left, one on the right side. Two nostrils : 

 one between the eyes, and the other above the cleft of the mouth. 

 Lips not fringed. The cleft of the mouth extends behind the eye, and 

 is nearer to the gill-opening than to the extremity of the snout. 

 Rostral hook produced backwards to behind the eye. Ventral and 

 anal united. The height of the body is contained five times ia the 

 total length, the length of the head five times and a half. Grejish- 

 brown. {Bl.) 



Rivers of Bandjermassing. 



7. Cynoglossus xiphoideus. 

 D. 120. A. 98. V. 4. L. lat. 135. 



Three lateral lines on the left side, the upper and lower separated 

 from the middle by twenty or twenty-one longitudinal series of 

 scales ; a single line on the right side. Two nostrils : one between 

 the posterior parts of the eyes, the other in front of the lower eye. 

 Eyes separated by a concave space, the width of wliich is more than 

 that of the orbit ; the upper eye considerably in advance of the lower. 

 Lips not fringed. The length of the snout is contained twice and a 

 third in that of the head, the angle of the mouth being behind the 

 vertical from the posterior margin of the eye, and nearer to the gill- 

 opening than to the end of the snout. The rostral hook terminates 

 below the front margin of the eye. The height of the body is con- 

 tained foui- times and two-thirds in the total length, the length of 

 the head five times and a half. The height of the dorsal and anal 

 fins is two-sevenths of that of the body. Uniform brownish-grey. 



Siam. 

 a-h. Six to nine inches long. From M. Mouhot's Collection. 



