266 TELLINA, TEXKBRIG. 



g 3. TELLINA. Spec. 100. 

 Section A. Ovate and thickish. 



fragiRs, (brittle tellina,) shell ovate, white ; gib- 

 bous with transverse recurved strise ; beaks 

 yellowish. An inch broad. 



Section B. Ovate, compressed. 



.radiatd) (radiated tellina,) shell oblong, with faint 

 longitudinal strise, polished ; suture behind the 

 beaks caniculate; whitish with red rays. Some- 

 times with unequal sides, large, white, brown, 

 yellow, &c. 



Section C. Suborlicular. Genus CYCLAS of 

 Bruguieres. 



sitnilis, shell suborbicular, convex, base a little 

 flattened ; having nearly equi-distant raised 

 concentric lines, giving a furrowed appearance 

 to the surface ; epidermis brownish ; hinge with 

 minute oblique teeth, lateral ones distinct, elon- 

 gated. Length the third of an inch, breadth a 

 little less. American fresh water shells. 



dubia^ shell oblique, subovate, convex, wrinkled 

 concentrically, whitish with a darker band ; 

 beaks nearer one end, whitish within ; primary 

 teeth distinct, two divaricating ones in one 

 valve, and in the other one, Length one-fourth 

 of an inch, and breadth a little less. American 

 fresh water shells. 

 See MS. P. 



8 5. TEXEBUIO. Spec. 90. 

 ?nolitor, (meal worm,) oblong, piceous ; shells 



