198 Proceedings of tJie Royal Society of Victoria. 



and anal tube orange, a few papilhe along the shell Vjlack. Foot, 

 when extended, more than twice the length of the shell, bearing 

 numerous papillae of various sizes, a few along the epipodial 

 furrow becoming larger and tongue-shaped. Tentacles subcylin- 

 <lrical, tips blunt, half as long as the shell, with conspicuous eyes 

 placed on their outer bases. .Snout half the length of the 

 tentacles, slightly tapering, mobile, oral oritice longitudinal. Anal 

 tube sometimes exserted a short distance, surrounded by cushion- 

 like papillte. Mantle i-oughened externally and denticulated on 

 both margins by numerous small papillfe, outer margin free all 

 round, capable of sheltering the retracted head and falling 

 curtain-wise from the shell's peripheiy to the foot ; inner margin 

 not overlaying the shell, produced into sixteen erect, branched, 

 waving processes which surround the shell like a crown. Viewed 

 from above these coronal pi'ocesses give the whole animal the 

 general aspect of a sea-anemone ; this, my colleague Mr. AVaite, 

 has suggested to me, may be a case of protective mimicry. 



LUCAPINBLLA PRITCHARDI, new specics. 

 (Figs. 3, 4, 5, 6, 7). 



From a shell collected at Flindei's, Western Port, Victoria, by 

 Mr. J. H. Gatliff, I derive figures o and 6, and the following 

 description. 



Shell oblong, twice as long as broad, parallel sided, ends ratJier 

 abruptly rounded, slightly pinched on either side of the perfora- 

 tion. When standing on a plane surface the posterior end is 

 suddenly and highly, the anterior gradually and slightly elevated ; 

 there is also a space in the middle where the edge of the shell 

 does not stand upon the ground. Perforation narrowly oval, a 

 quarter of the shell's length, its anterior end the shell's centre ; 

 viewed edgeways the notch is seen to be cut deepest at the 

 hinder end. Surface sculptured by about ninety radiating 

 unequal riblets, broader than their interstices, beaded where cut 

 across by circumferential growth lines, near the margin this 

 sculpture developes into imbricating scales upon the riblets. 

 Colour — pink, obscurely rayed by half a dozen yellow segments. 

 The interior is white, smooth and porcelainous, except at the 

 sharp edge where it is pink and crenelated by the external 



