344 



Illustrations in British Zoology 



shells : nevertheless, for the sake of making our history and illustration of 

 the pedunculated Zycpas as complete as our means will enable us, the cut 

 is here repeated, {fig. 78.) It will be right to quote here, also, a remark 

 expressed by G. J. (Vol. III. p. 335.), in his fifth letter on Molluscous 

 Animals ; it is this : — " We do not include the Cirripedes (Lepas Lin.) 

 amongst the MoUusca." — J. D. 



a, L^pas anatifera. 



78 

 b 



bed. Veiled Shells. ef. Cockles. g, Pinna Mgilis. 



i, V^nus Chion^. k, .Nerita canrfena. 



h, Carinkria vftrea. 

 /, TVbchus. 



Art. X. Illustrations in British Zoology, By George John- 

 ston, M.D., Fellow of the Royal College of Surgeons of Edin- 

 burgh. 



3. Plana^'ria cornu^ta. (fig. 79.) 

 CI. Fermes, Ord. Molles, Fam. Planulariae, Gen. Planaria. 

 PI. — Ovalis, plana, foliacea, venosa-rubescens, linea saturatiore in medio 

 notata, atomisque albis irrorata ; tentaculis duabus ; oculis plurimis 

 in macula dorsali acervatis. 



PI. — Oval, flat, thin, reddish-brown, the colour disposed in veins, marked 

 with a blood-red line down the middle, and sprinkled over with white 

 dots J tentacula two ; eyes very numerous, forming a black spot on 

 the anterior part of the back. 



Habitat. The sea-coast of Berwickshire. 



a. Animal of the natural size, and in different attitudes. b. Animal magnified. 

 c, Ventral surface, to show situation and form of proboscis, and of posterior aperture. 



