LERNEA. 333 



Fam. LERNEOCERAB^ Baird. 

 Under surface of body without any vestiges of feet or 

 other appendages. 



Gen. 187. LERNEOCERA, Blainv. 



Head with horn-shaped appendages, simple and symme- 

 trical. Ovaries straight, and of moderate length. Body 

 long and slender. 



Lerneocera cyprinacea, Linn. sp. — Head with four 

 long, slender, horn-shaped appendages. Length of animal, 

 about eight lines. 



Barbut mentions this as a common species on the sides 

 of the carp, bream, and roach, in many of our ponds and 

 rivers; but Dr. Baird says he has not seen specimens of 

 this species. 



Gen. 188. LERNEA, Linn. 



Body more or less twisted; head with horn-shaped 

 appendages, irregularly branched; ovaries twisted into 

 round masses ; abdomen of considerable size. 



Lernea branchialis, Linn. Gill-sucker. (Plate XX. 

 fig. 4.) — Whole animal of a firm consistence, being hard 



