34^8 escharidtE. 



coast of Antrim, 47 fathoms (Swanston) : Birterbuy Bay 

 (A. M. N.) : &c. 



Geographical Distribution. Roscoff (Joliet) : Cha- 

 rente-Inferieure (Fischer) : ^gean Sea (E. Forbes) : Adri- 

 atic (Heller) : Bergen (A. M. N.) : Bahusia and Southern 

 Norway, chiefly in great depths, 200-300 fathoms ; in 

 moderate depths rather rare (Smitt) : Falkland Islands 

 (D'Orbigny) : New Zealand (F. W. Hutton). 



Smittia affinis, Hincks. 



Plate XLIX. figs. 10, 1]. 



Lepralia AFFINI8, Hiucks, Devon and Cornw. Cat., Ann. N. H. eer. 3, is. 

 206, pi. lii. fig. 2 (46 sep.). 



Zooscia broad -ovate, distinct, moderately convex, separated 

 by lines ; surface smooth (in tlie young cells) , minutely 

 punctured ; orifice orbicular, with a thin, raised peri- 

 stome, channelled in front, three denticles within, the 

 central one the largest ; immediately below the inferior 

 margin, to which it is attached, an avicularium, placed 

 more or less transversely, with pointed mandible. Ocecia 

 imknown. 



Colony forming a circular patch. 



Habitat. On shell. 

 Locality. Start Bay, South Devon (T. H.). 



As only a single specimen has occurred, it is impossible 

 to decide how far this is a permanent, well-established 

 form. Its nearest ally is S. reticulata, from which it is 

 distinguished chiefly by the position of the avicularium, 

 which, instead of projecting longitudinally below the 

 orifice, and pointing straight downwards, is placed trans- 



