424 SYNOPSIS. 



Sp. 252. Q. ccecus. Myxine or Glutinous Hag. Body elon- 

 gated, vermiform, compressed and tapering behind ; eyes 

 wanting ; an obscure fin commencing behind the middle, 

 continued round the tail and along a portion of the belly ; 

 skin naked and covered with a thick mucous secretion ; 

 colour of the back dark brown, lighter on the sides, yel- 

 lowish brown beneath. Blfjth, pt xii. pi. 413 ; Penn. Brit. 

 Zool., iii. p. 109 ; Yarr. Brit. Fish., ii. 612. Myxine glut- 

 tinosa, Linn. 

 GEN. CXXV. AMPHIOXUS. Body compressed and pointed 



at both ends ; a single dorsal extending the whole length of the 



back and passing round the tail ; no pectoral or ventral fins ; 



mouth narrow, elongated, the margin furnished with a row of 



lender filament? 



Sp. 253. A. 'nceolatus. The Lancelot. Head pointed, 

 without any trace of eyes ; nose produced ; muscles along 

 the sides diverging obliquely backwards from a lateral line 

 near the centre ; tail pointed ; surface of the body smooth. 

 Yarr. Brit. Fish., ii. p. 618; Qooddr, Trans. Roy. Soc. 

 Edw., xv. p. 247 ; Couch, Mag. Nat. Hist., 1 838. Limax 

 lanceolatus, Pallas, Spic. Zool, x. p. 19, t. 1, fig. 11. 



" ^ 



