501 ORDER MALACOPTERYG11 SUI3BRACHIATI. 



of the Mediterranean, celebrated under the name of 

 remora, Echen. remora, L., Bl. 172. (sucking-fish), is 

 short, and has but eighteen plates to its disk. Another 

 species, more elongated, Ech. nancratus, L., Bl. 171., 

 has twenty-two ; and a third, the largest of all, Ech. 

 lineata, Schn., Linn. Trans. I. pi. xvii., has but six. 

 , We have discovered one, Ech. osteochir, Cuv., in 

 which the rays of the pectorals are osseous, com- 

 pressed, and terminating in a slightly crenated palette. 



