134 BURitA, ITS PEOPLE AND PRODUCTIONS. 



DosnriA, ScopoJi. 



Shell couccutriiiilly striated or scabrous, dueply luimlate under tlic beaks. 

 Hinge with three teeth on each valve. Ligament external. " While in Ve»m and 

 its sub-genera we find the cancellated or festooned style of ornament to predominate, 

 and in Meretriz the smooth and painted style to jirevail, the surface of the valves 

 in Dosinia is usually concentrically grooved iiud of a white or pale colour" (Adams). 



* ,, ExcisA, Chem. 



* ,, jrvExiLis, Gmel. 



* ,, scABEirscun, " Phil." Eeeve. 



* ,, LAMixATA, Eeeve. 



Clementia, Gray. 



Shell equivalve, inequilateral, subtrigonal, white, thin. Pallial sinus ascending 

 Dearly as far as the beaks. 



* ,, siJiiLis, Sow. 



Sub-famili/ TAPESIN.'E. 



Foot lanceolate, byssiferous. 



Tapes, Megerle ton MuhJfeldt. 



Siphon united half way, ends divergent. Shell ovate, equivalve, inequilateral, 

 closed, margins entire. 



* ,, sEiriDECTJssATA, Recve. 



* ,, TAPILLIONACEA, Lam. 



* ,, CNDULATA, Bom. 



Veneettpis, Lamarch. 



Foot small, linguiform, byssiferous. Shell ovate or subglobose, inequilateral, 

 gaping posteriorly. Three teeth in one valve, two in the other. Ligament external. 



* ,, MONSTRosA, Chem. 



* ,, MiTis (?), Sow. 



* ,, lEus, L. ("precisely the Mediterranean form," Llanlcy). 

 *Ctpricaei)Ia angulata, Lam. 



,, sPATHULATA, Sow. Audamans. 



* ,, VELLicATA, Reeve. 



""'CoEALLIOPnAGA COEALLIOPAGA, Gmel. 



Famihj Mactridse. 



Siphons united to their ends, which are surrounded by simple cirrhi. Foot 

 lanceolate, subanterior. Shell equivalve. Hinge with two cardinal tooth in each 

 valve, the hinder small or rudimentary. Lateral teeth in the right valve double, in 

 the left single. Ligament internal. PaUial sinus distinct. 

 *Teigonella tiolacea, Gmel. 



* ,, Aban.soni, Eeeve. 



* ,, cuneata, Chem. 



* ,, axtiquata, Spongl. 



* ,, tueoida, Gmel. 



* ,, sp. (near to TUEorDA.) 



* ,, PELLUCID A, Chem. 



* ,, CAPILLACEA, ReOVC. 



* ,, .SGTPTiACA, Dillwyn. 



* ,, COMPLANATA, Dcsh. 



* ,, PLICATA, L. 

 *OXYPEEAS TEIANGCLARIS, Lam. 



*LrTi(AErA PLANATA, Chem. 



* ,, ELOXGATA, Gray. 



