APPENDIX. 277 



A deep water species, for the most part ; dredged chiefly in 

 Scotland, Ireland, and the North of England. 



The C. simillima cannot safely be referred to either ; indeed 

 the known character of Laskey throws great doubts upon its indi- 

 genousness. 



Vol. iii. p. 249. Chemnitzia fenestrata. 



Mr. Clark has taken this fine species alive in ten fathoms water, 

 six or seven miles from land, off Exmouth. The animal has 

 comparatively long, slender tentacula with white inflated tips. 

 The black eyes are close together at the inner bases of the ten- 

 tacles. The " rostrum is slender, long, flat, barely hollowed out 

 at its termination." The foot is short, broad, and white, but 

 capable of much attenuation ; its anterior angles are very mode- 

 rately auricled. The operculum is corneous, pyriform, and 

 obliquely striated. 



Mr. Clark, in the same paper in which his account of the 

 above-noted animals is contained (Annals of Nat. Hist. Sept. 

 1852), describes those of certain other Chemnitzice, and allied 

 mollusks, under which, however, he includes so many forms that 

 it is not always clear to which species (or variety, as he would 

 have it) his description rightly applies. Among these is one 

 which he refers at once to Chemnitzia indistincta and C. claihrata. 

 This animal is yellowish white, with snowy specks. It has very 

 short tentacles, broad and subtriangular, often speckled with 

 yellow, and having their eyes at their inner bases. The foot is 

 largely auricled in front. The operculum is pyriform. 



Vol. iii. p. 252. Chemnitzia scalaris. 



The animal of specimens taken by Mr. Clark in ten fathoms 

 water off Teignmouth was white (sometimes of a pale red muddy 

 brown) speckled with opaque white points ; the mentum deeply 

 notched in front ; the tentacula moderately long, strong and di- 

 vergent ; the eyes black, not very close together ; the foot short 

 and slightly auricled. 



Torquay in S. Devon is also a locality for this rare shell. 



