288 PISCES. 



before each dorsal as in Spinax; the pointed jaws projecting as much 

 as the snout, with small pointed teeth in the middle, and very broad 

 rhomboidal ones towards the angles, the ensemble of which resem- 

 bles certain spiral shells. 



But a single species is known, the Sq. Philippi, Schn., Phil., 

 Voy. pi. 283, and the teeth: Davila, Cat., I, xxii. 



Species ivithout an anal hut furnished with spiracles. 



Spinax, Cuv. 



All the characters of a Carcharias, with the addition of spiracles, 

 and distinguished besides by the want of an anal, by several rows of 

 small trenchant teeth, and by a strong spine before each dorsal. 



Sq. acanthias, L.; Bl., 85. (The Picked Dog-Fish.) Brown 

 abovej whitish beneath. The young, Edw., 288,(1) are spotted 

 with white. 



Centrina, Cuv.(2) 



The spines, spiracles, and deficiency of the anal as in Spinaxj the 

 position of the second dorsal over the ventrals and the shortness of 

 the tail, give it a more clumsy appearance than is presented by any 

 other species. The lower teeth are trenchant and placed in one or 

 two rows; the upper ones are slender, pointed, and arranged in se- 

 veral rows. The skin is very rough. 



The species most common on the coast of France is the Sq. 

 centrina, L.; Bl. 115. 



SCYMNUS, Cuv.(3) 



All the characters of the preceding fishes except the dorsal spines. 

 They also are found on the coast of France. 



(1) Add the Sagre, Brouss., (Sq. spinax, L.,) Gunner, Dronth., Mem., II, pi. 

 vii; the Mguillat Blainville, Risso, Ed. II, f. 6. N.B. The SauAius uyatus, Rafin., 

 Caratt., pi. xiv, f. 2, does not difFer from a Spinax, and is probably the Squalvs 

 spinax, L. His Dalatias nodurnus, lb., f. 3, is a Spinax whose spiracles escaped 

 his observation. His Etmopterus aculeatus, also, appears to me a Spinax drawn 

 from a dried specimen. This author gives it three branchial orifices, but he only 

 allows the same number to the Squat, angelus, which most certainly has five. 



(2) KVT/)v, the Greek name of this fish, from Kivrfiov, sting. It is the Oxrwo 

 Tds of Rafin. 



(3) Scymnus, the Greek name of a ScyUium. 



