63 



paring ours with the foreign fragili's it mufl be fubmitted 

 with a degree of doubt, as that fliell appears to be a rare 

 produtlion from JVicobar, and according to the figure re- 

 ferred to, the firice are lefs numerous than in oi rs. Thefe 

 however are not fufficient obje6tions to induce us to unne- 

 ceflarily multiply the fpecies,. when in other refpedts it 

 fo perfectly correfponds. ■ ' 



Shell ovate-oblong, pellucid, white, equilateral, equivalve, SuSauriculata. 

 furniflied with fmall, equal, angular proje6lions, or fub-auri- Tab, 29, f. S- 

 cles, and wrought with numerous longitudinal 7?r/rt? that 

 nightly crenate the margin ; along the middle are two Jlrice 

 that appear more confpicuous than the reft by being opaque, 

 and are equally evident on the infide ; a chara6ler conftant 

 in feveral fpecimens examined. Length a quarter of an inch ; 

 breadth half its length. 



This new and very curious little fpecies of Pedien differs 

 materially from fragilis by being exadlly equilateral, and in 

 being deftitute of the finer intermediate^r/i?, as well as in 

 the hinge, which ftands at right angles N\ith the fliell, and 

 not floping to either fide, 



Several of thefe Iliells were taken with the laft in deep 

 water. 



ANOMIA. 



/ 



