1849.] Catalogue of Malayan Fishes, 1391 



slightly directed backwards. The apical half of the teeth is slightly 

 depressed. Crustacea form the food of the young, of which single 

 occur in the Straits of Malacca at all seasons.* Large individuals are 

 seldpm seen. 



Gen. Rhina, {Klein, 1745,) Muller und Henle, 1841. 

 Snout rounded ; spiracles immediately behind the eyes. Both the 

 superior and inferior nasal valve extend to the inner angle of the 

 nostril. Mouth deeply undulating. Teeth almost globular, not broader 

 than long. 



Rhina ancylostomus, Bloch-Schneider. 



Rhina ancylostomus, Bloch-Schneider, 352, Tab. 72 . 

 Rhina ancylostomus, Cuvier, R. A. II. 396 ( 3 ). 

 (Icon.) Rhina ancylostomus, Gray : 111. Ind. Zool. II. PI. 102, Fig* 



2. (Teeth.) 

 Rhina ancyclostomus, Swainson, II. 322. 

 Rhina ancylostomus, Agassiz : Tab. H. Fig. 3, 4. (Teeth.) 

 Rhina ancylostomus, Owen : Odontogr. PI. 23. (Teeth.) 

 Rhina ancylostomus, Muller und Henle, 110. (Very young.) 

 Rhina ancylostomus, Richardson: Report, 1845, 195. 

 Above earth-brown or deep skyblue ; on the back, pectorals and 

 caudal numerous distant whitish spots; beneath white. Iris pale 

 golden ; pupil black, transversely oval. 

 Habit. — Sea of Pinang. 



Indian Ocean, Madras, China Sea. 

 Total length : 7 ft. 



The distance between the nostrils exceeds the length of each nostril 

 by about \. The distance of the nostrils from the margin of the head 

 is \ of their length. The horizontal diameter of the eye, which slightly 

 exceeds the vertical, is a little more than J of the length of the nostril. 

 The spiracles are nearly ovoid, their longest diameter ^ of the length of 

 the nostrils ; their distance from the eye is about ^ of its horizontal 

 diameter. The pectorals, by far the largest of the fins, appear triangu- 

 lar and are nearly equilateral ; the anterior convex margin is thickened, 

 rounded and smooth ; the posterior is straight and coarsely serrated. 

 The branchial openings in position and form resemble those of Pristis 

 semisagittatus. The anterior dorsal commences a little in front of the 



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