648 PETROMYZONTIDJE. BRANCHIOSTOMATID^. 



86. Petromyzonfluviatilis, Linn. River-Lamprey. 

 Hob. British Rivers. 



87. Petromyzon branchialiSj Linn. Fringed-lipped Lampern. 

 Hob. British Rivers. 



a. Presented by A. H. Cocks, Esq., F.Z.S., Feb. 12, 1881. 



Subclass LEPTOCARDII. 



Family BRANCHIOSTOMATID^. 



Genus BRANCHIOSTOMA. 



88. Branchiostoma lanceolatum (Pallas) . Lancelet. 

 Rob. Coast of Italy. 



a-r. Presented by the Director of the Zoological Station, 

 Naples, Nov. 14, 1874. 



