CHONDROPTERYGII BRANCHIIS FIXIS. 295 



nished with a coarser shagreen than that of the Sephen, and with 

 stellated granules.(l) 



Myliobatis, Dumer.(2) 



The head projecting beyond the pectorals, which are larger 

 transversely than in other Rays, giving them somewhat the appear- 

 ance of a bird of prey with outstretched wings, which has caused 

 them to be compared to the Eagle. The jaws are furnished with broad 

 flat teeth, placed like flags in a pavement, and differing in size ac- 

 cording to the speciesj their extremely long and slender tail termi- 

 nates in a point and is armed, like that of a Trygon, with a strong 

 spine notched on both sides, supporting near its base and before the 

 spine, a small dorsal. Sometimes there are two or more spines.(3) 

 The snout of some projects in a parabola. Such as 



R. aqiiilat L.; Mgle de mer; Mourine; Ratepenade; Bceuf; 

 Pesce ratto, &c.; Duham., part II, Sect. IX, pi. xj and the 

 teeth, Juss. Ac. des. Sc, 1721, pi. 17.(4) (The Sea Eagle.) 

 The middle plates of its jaws are much wider than they are 

 long, and placed in a single row; the lateral ones, which are re- 

 gular hexagons, in three rows.(5) It attains a large size and is 

 found in the Mediterranean and the Atlantic. 

 In others, the Rhinoptera, Kuhl, the snout is divided into two 

 short lobes, under which are two similar ones. (6) 



Chepaloptera, Dum.(7) 



The tail slender; the spine, small dorsal, and the pectorals broad, 

 as in Myliobatis; but the teeth are still more tenuous than those of 



(1) Th&Mereba, Marcgr., 175 {Itaia orbicularis, Bl., Schn.), belongs, perhaps, 

 to this division. 



(2) MuxioySetToc, from /xvkh (grindstone), referring to the form of the teeth. 



(3) See the tail with five spines, Voy. de Freycin., Zool. 42, f. 3. 



(4) N.B. The fig. of Bloch, 81, is not that of the aqulla, but of a Trygon 

 with a fin placed before the spine. 



(5) Add: Myl. bovina, Geoff., Eg. Poiss., pi. xxvi, f. 1;R. narinari, L., 

 Marcgi-., 75, and under the name of aigle, Lacep., I, vi, 2, and the teeth, Phil. 

 Trans., Vol. XIX, No. 2S3, p. 673. Eel tenkee, Russ., I, 8, found in both hemi- 

 spheres; i?. flagellum, Schn., 73. Hisi?. nieuhowii. Will. App., X, Mookarrah 

 tenkee, Russ., VII, perhaps only differs from it in the loss of the spine. The teeth 

 are like those of the aquila,- R. Jussieui, Guv., has the middle teeth broader 

 than they are long, and in three rows. Jus. Ac. des Sc, 1721, pi. iv, f. 12. 



(6) Myliobatis marginata, Geoff., Eg., Poiss., pi. xxv, f. 2;Raia quadriloba, 

 Lesueur, Ac. Nat. Sc. Phil. 



(7) Chepaloptera, winged head, from the projection of the pectorals. 



