PH ARUS. 



Genus PIIAP.US, Lench. 



Testa compressa, suhaequilateralis, epideiiiiide tenni in- 

 (hUa ; interne siibtiis umhones casta validd perpen- 

 (liailari miinita ; cardo dentibus in vahd dextrd 

 tribus ; in valca sinistra uno ccnlrali, vno bijido 

 laterali armatus. Impressio musailaris antica 

 clongata, Iioriiontalis. Impressio p(dUi sinuafa. 



Shell comjirosseil, subcquilater;il, with a thin epidermis ; 

 internally under the umhones provided with a strong 

 perpendicidar rib ; hinge armed with three teeth 

 in the right valve, and a bifid lateral one and a 

 central one in the left. Anterior muscular im- 

 pression elongated, horizontal. Impression of the 

 mantle sinuated. 

 Syn. Solecurtoides, Desmoulins. 

 Pallia, UOrbigny. 

 Ceratisolen, Forbes. 



The single species that is known of this genus lias a 

 rather wide geographical range. Like So/ccurlus it lias 

 a central hinge, but a very compressed, elongated 



form ; and the interior is strengthened liy an umbonal 

 rib. The foot of the animal is rather peculiar. 



Species 1. 



PiL\!iUs LEni'.MF.N. Pha. tcstd tenui, compressa, palli- 

 dissim'c roseo-fnlvescenii ; latere antico breviitsculn, 

 attenuato ; marcjine dorsali declivi j latere postico 

 oblongo, late, truneato, obtuse angulato ; epidermide 

 tcmii, extra marginem testd extensd. 



TuE BEAN-POD Phakus. Shell thin, compressed, very 

 pale fulvous-rose ; anterior side rather short, 

 attenuated ; dorsal margin sloped ; posterior side 

 oblong, broad, truncated, obtusely angular ; epi- 

 dermis thin, extended beyond the margin of the 

 shell. 



L1NN.EUS. Systema Natura?. 



Ilah. Jlediterranean. — Red Sea. — Senegal.- British 

 Islands. 



August, 1874. 



