76 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



C. Chadwick, in 12 fms., off Bradda Head, Port Erin. 

 The variety laevigatus has been taken by Mr. W. J. 

 Beaumont and myself, between tide-marks, both at Port 

 Erin and Port St. Mary. I have also taken it at Plymouth. 



26. 0%c'cZa(i'i^ssa72.p'^^i7zoZe;i2^it5,Quatr.(Pl.XIV,fig.42,45.) 



Length 6 — 7 mm. Body elongated, oval, broadly 

 rounded behind, slightly narrowed in front. A pair of 

 long, conical marginal tentacles are present, and between 

 them the anterior extremity projects slightly. Ground- 

 colour white, against which the deep carmine-coloured 

 intestine is distinctly visible. The mouth is far forward, 

 in front of the brain. The strong muscular cylindrical 

 pharynx, is enclosed in a sheath which gives off a posterior 

 coecum extending behind the mid-ventral sucker. 4 — 5 

 pairs of secondary branches arise from the straight main- 

 gut. The first pair enclose the pharynx and unite in front of 

 it. From this junction a short median offset represents the 

 unpaired branch which in other Polyclads arises directly 

 from the main-gut. A terminal gut-branch enters each 

 tentacle. Eyes are present round the bases of the tentacles 

 and also as a couple of small sharply-defined groups over 

 the brain. The male genital aperture lies just behind the 

 brain. The female pore surrounded by the radiating 

 masses of the " shell-gland," is placed half-way between 

 the male pore and the mouth. 



This species, hitherto only recorded by Kohler, from 

 Guernsey,* was dredged on several occasions among shell- 

 debris outside Port Erin Breakwater. I have also found 

 it under similar conditions at Plymouth. 



Eurylepta cornuta which probably occurs, though I have 

 not met with it, in the L.M.B.C. district, differs from this 

 species by its large size (sometimes an inch long), scarlet 

 colour, and elongate group of eyes over the white pharynx. 



♦Annals & MaL^ Nat. Hist., XVIII, 1886. 



