CONCHIFERA. T47 
Animal (Peronea Pout) with both trachez extremely long, sub- 
equal, and with margin of mantle as though serrate with acuminate, 
conical cirri. 
Capsa Brua., Desu. (not Lam.) Shell convex. Hinge narrow, 
with two unequal teeth in each valve. Ligament thick, elongate. 
Lunula indistinct. 
Sp. Psammobia rugosa SownRBY, REEVE, Sanguinolaria rugosa LaM., Venus 
deflorata L., CuEMNitz Conchyl. Tab. 9, figs. 79—83, DEsHayEs Conchyl. 
Pl. 13, figs. 1—3 ; this species of shell is met with in the Atlantic, the Red 
Sea and the Indian Ocean, and is amongst the most generally dispersed 
species. The animal is still unknown. 
Sanguinolaria Lam., Desu. Shell flat. Hinge with two unequal 
teeth. Ligament elongate, flat. 
Sp. Psammobia sanguinolenta nob., Solen sanguinolentus GM., Sanguinolaria 
rosea LAM., CHEMN. Conchyl. Tab. 7, fig. 56. 
Psammobia Lam., Drsn. Shell flat. Hinge with two teeth 
small, diverging or with single tooth. Ligament elongate, gibbous, 
protuberant. 
Sp. Psammobia vespertina Lam., Solen vespertinus GM., Buainv. Malacol. 
Pl. 77, fig. 4;—Psammobia incarnata Dusu. (Tellina incarnata L., Fauna 
Suec.), Psammob. feroensis LAM. &c. These two species occur also fossil in 
tertiary formations. 
Tellina lL. (exclusive of some species). Shell thin, mostly 
transverse, inequilateral, anteriorly shorter, rotundate, posteriorly 
plicate, with fold running obliquely from the margin towards the 
points. Hinge narrow, with two teeth or single tooth in each 
valve; in most two lateral teeth remote. Animal (Peroncea Pott) 
with foot large, lanceolate and margin of mantle cirrate with long 
unequal trachez, hiding deep under the sand. 
The species of this genus are numerous, especially in other parts of the 
world. In most the shell is long and flat, as Tellina radiata L., D’ ARGEN- 
VILLE Conchyl. Pl. 22, fig. a, Eneyel. méth., Vers. Pl. 289, fig. 2, BLAINv. 
Malacol. Pl. 71, fig. 4; sometimes ending behind with a thin elongated 
part, as in Tellina rostrata L., Tellina Spengleri GM., Lam. Encyel., 
Vers. Pl. 287, fig. 5.—In others the shell is more round, as Tellina lingua 
felis L., Rumeu. 1. 1. fig. a4, Guérin Iconogr., Moll. Pl. 31, fig. 1. In the 
North Sea is found Zellina fabula Guert., Lam., GRonov. Zoophylac. Tab. 
18, fig. 9, Tellina solidula SOLAND., Lam. &c. 
Comp. on this genus SPENGLER Skrivter af naturh. Selskabet, iv. 2. 
Kjébenhavn, 1798, pp. 67—121, Tab. 12. 
