LIST OF FISH. 41 



1. SQUALUS. 



Snout flat, more or less rounded, moderately long : the nostrils 

 in the middle between the mouth and the point of the snout. 

 Labial cartilages very small, or wanting. The yelk-bag of the em- 

 bryo is connected with a kind of uterine placenta by a curled fold : 

 the oviduct is either smooth or clothed with villi. 



Squalus, sn., Linn. 



Squalus, Bonap. Selac. Tab. Anal. 10, 1838. 



Carcharias, Mull, v Henle, Mag. Nat. Hist. ii. 1838. Plagiost. 28. 



Carcharias, part., Cuv. Reg. An. 2ed. ii. 387. 



The form of the teeth divides the genus into live sub-genera. 



1. Teeth in the upper and under-jaw equal, except that there is a 

 single middle tooth iu the upper-jaw, which is wanting in the under 

 one, cutting with the whole outer efficient point, destitute of serra- 

 tures. The outer part of the base forms a blunt ledge, with or with- 

 out a slight indentation. The second back-fin stands straight over 

 the anal or over the hinder end of the same. Tail-pit distinct 

 above and below. Scales small, three-keeled. The oviduct of the 

 embryo is beset with villi. — Scoliodon. 



Scoliodon, Mull. %■ Henle, Mag. Nat. Hist. ii. 3, 1838. Plagiost. 



28. Bonny. Setae. Tab. Ana/. 10, 1838. 

 Carcharias, sp., Cue. Beg. An. 2 ed. ii. 3-S7. 



1. Squalus (Scoliodon) laticaudus. Broad-tailed Requin. 



Carcharias (Scoliodon) laticaudus, Mull. £• Henle, Plag. 28. Bo- 

 nap. Selac. Tab. Anal. 10. 

 Hab. — India. 



Mus. Paris and Berlin. 



2. Squalus (Scoliodon) acutus. Russell's Requin. 



Carcharias (Scoliodon) acutus, Rupp. Mull, v Henle. Plag. 29 

 Rupp. Chondropt. o, t. 18, f. 4, 1837. Rich. Rep. Brit .!„,„ 

 194, 184.3. 



E 3 



