LIST OF FISH. 75 



1. DALATIAS. 



Head either flat or compressed on the sides. Spout-holes far be- 

 hind and somewhat above the eyes. The teeth of the upper-jaw 

 wholly straight, or upright on the jaw, hooked, the under ones 

 broader, with an upright or inclined edge. Gill-openings small, 

 the fourth and fifth only a little approximated. No tail-pit. 



Dalatias, Rafin. Caratt. 



Scyinnus, part, Cuv. Reg. An. 2ed. ii. 392. 



Scymnus, Mull. §• Henle, Mag. Nat. Hist. ii. 1838. 



1. The upper corner fold of the mouth is connected by a skinny 

 ledge, under which before the teeth there lies a very conspicuous 

 skinny lip, much longer than the upper-teeth: the under corner fold 

 of the mouth passes into a lip which is very free, but is not separated 

 from the skin of the throat by a furrow. The skin forms beneath 

 the eye a free border towards the large naked region of the corner 

 of the mouth. The under-teeth are lancet-formed, convex in the 

 middle of the anterior surface, sharp on the sides, the lancet-shaped 

 point rising from a high base. The under mid-tooth, which is no 

 smaller than its neighbours, has a base with both its sides equal 

 (and a notch at the commencement of the root). The root is larger 

 than the point ; two lobes on the edge of the jaw, with a notch 

 between the two lobes, from which there runs a channel up to 

 an opening in the middle of the root of 'the tooth. The remaining 

 teeth in the under-jaw have an indentation on their inner sides 

 wherein the root of the adjoining tooth lies : their root is also 

 two-lobed and has the same channel. The upper-jaw teeth stand 

 straight forwards, and their sides are inclined outwards. The clamp- 

 ers are without a spine. — Dalatias. 



Dalatias, Rafin. Caratt. 

 Scymnus, Mull. V Henle, Plag. 

 Scymnus, sp., Cuv. Reg. An. 2 ed. ii. 



1. Dalatias Lichia. The Lichia. 



Canis centrinae Salviani similis absque aculeis, Sten. Hist. Diss. 



Pise. 138. 

 Seehund, Valenlini, M. m. 1, 484. 

 Liche, Brouss. 677, 26. 

 Squalus americanus, Linn. Gmel. 1503. Bloch, Schneid. 136. 



Blainv. Faun. Fr. 63, pi. 15, f. 2. 



H 2 



