ASTRJBACEA. ILYANTBIDJS. 



THE TREFOIL MUZZLET. 



Peachia triphylla. 



(Sp. nov.) 



Plate X. Fig. 2. 



Specific Character. Column pear-shaped, moderately long; conchula 

 bearing three ovate or leaf-like lobes ; tentacles marked with arrow-heads, 

 and based with brown. 



GENERAL DESCRIPTION. 

 Form. 



Column. Pear-shaped ; lower extremity rounded, with a distinct central 

 orifice, around which the skin is puckered. Surface covered with fine and 

 close-set transverse wrinkles, and with minute suckers, which have a 

 strong adhesive power. 



Disk. Flat, but very protrusile ; radii distinct. 



Tentacles. Twelve, in one circle, marginal ; thick at foot, and tapering 

 to a point. 



Mouth. About one-fourth of an inch wide at the margin, shelving 

 downward funnel-like ; lip rugose and erectile. 



Conchula. Cut into three ovate, leaf-like lobes. 



CONCHULA. AND MOUTH OP P. TRIPHYLLA 



{magnified). 



Colour. 



Column. Opaque pale reddish-brown, or bay, with numerous irregular 

 longitudinal splashes of rich red-brown. No pale lines indicate the septa. 



r2 



