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. — Bloeh, pt. xii. pi. 413 ; Pe7m. BnL 

 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 



slender filaments. 



Sp. 253. A. lanceolatus. The Lancelot. Head pointed, 

 without any trace of eyes ; nose produofld ; muscles along 

 the sides diverging obliquely backwards from a lateral line 

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

 Tarr. Brit. Fish., ii. p. 618; Goodsir, Traits. Roy. Soc. 

 Edin., XV. p. 247 ; Couch, Mag. Nat. Hist., 1 838. Limax 

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



