KELLIA. 83 



Kellia planulata. 



Fig. 33. 



Shell sub-oral, %yhite, with a thin purplish epidermis; beaks prominent. 



Kellia rubra, Gould, Invert, of Mass. 1st ed. 60 (non auct.). 

 Kellia planulata, Stimpson, Sliclls of New England, 17. 



Sliell minute, rather thick, sulj-oval, very inequipartite, rather 

 compressed ; beaks ratlier prominent and in contact, having before 

 them a deeply excavated, elongated, smooth areola ; ends broadly 

 rounded, especially the posterior tip ; basal margin scarcely curved 

 and nearlv parallel with the superior margin ; surface 

 marked with the lines of growth, eroded at the beaks, 

 and covered with a purplish or dirty-brown, rather 

 thick, epidermis. Within white and glossy ; two mus- 

 cular imijressions, and the pallial line directly con- 



. , . . ,., , K. planulata. 



necting them, without any smus, quite perceptible. 

 Hinge consists, in the right valve, of a narrow, erect, central tooth, 

 and an imperfect one each side, slightly detached from the edge 

 of the valve ; in the left valve, of a well-defined tooth on each side, 

 barely separated from the edge of the valve, leaving a triangular 

 vacancy between them to receive the central tooth of the opposite 

 valve. Length, one sixth of an inch ; height, one eighth of an 

 inch ; breadth, one sixteenth of an inch. 



Several specimens of this minute shell were found by Mr. C F. 

 Shiverick in the harbor of New Bedford. I have also found it about 

 the roots of sea-weed, which seems to be its proper situation. Buz- 

 zard's Bay in three fathoms gravel (Prime and Stimpson) ; Boston 

 Harbor in five fathoms, shelly bottom ( Stimpson) ; Sable Island 

 {Willis^ ; Gull Island (Smith). 



Dr. Stimpson, l)y actual comparison with European specimens, 

 has decided this to be distinct from K. rubra, where I formerly 

 placed it. It is more compressed in form, and the beaks are less 

 conspicuous. 



Kellia suborbicularis. 



Shell rounded quadrate, white, inflated, fragile, translucent; two teeth in one 

 of the valves. 



Ml/a suborbicn'aris, ]Mont. Test. Brit. 39, 564, pi. 26, fig. 6; Linn. Trans, viii. 41. — 



DiLLw. Recent Shells, i. .t5. 

 Tellina suhorhirnlaris, Turt. Conch Diet. 179. 

 Petricola suborbicularis, Gkay, Ann. Philos. 1825. 



