220 CYBENIDJE. 



prominent, eroded ; anterior margin rounded, gradually passing 

 into the lower margin ; ventral margin much arched ; posterior 

 margin curved, somewhat truncated ; ligament short, thin ; 

 ligamental sinus shallow, slightly rounded ; escutcheon and lunule 

 absent ; interior of shell polished only at the margins ; nacre dark 

 violet; hinge margin narrow; lateral teeth long, the anterior 

 longer than the posterior, the inner almost uniting with the 

 outer, those portions bordering on the cardinal teeth somewhat 

 swollen, the swelling increasing very gradually ; muscle and 

 mantle scars shallow. 



Long. 17, la't. 19, diam. 12 mm. 



Jlab. ? India. 



Type in Sandberger Coll., Wurzburg. 



The name "violacea" having been already used by Prime in 

 the genus, it becomes necessary to substitute another, hence that 

 now given to the present species. 



359. Corbicula inflata, Clessin. 



Corbicula inflata, Clessin, in Martini & Chemnitz, 1879, p. 179, 

 pi. 31, figs. 14, 15, 



Shell of medium size, solid, much inflated, almost equilateral, 

 sculptured with polished, strong, somewhat distant, concentric 

 riblets, covered with a yellowish-brown periostracum ; anterior 

 side short, scarcely attenuated ; posterior side broadly truncated ; 

 umbones broad, much inflated, very prominent, strongly recurved ; 

 vertical transverse section broadly cordate ; horizontal contour 

 roundly ovate ; anterior margin somewhat curved towards the 

 lower margin, sharply rounded, gradually passing into the strongly 

 arched Literal margin ; posterior margin somewhat curved, 

 gradually passing into the lower margin ; escutcheon and lunule 

 scarcely noticeable ; ligament short, very strong ; ligamental 

 sinus shallow, angularly notched ; interior of shell polished only 

 at the margins, nacre pale violet ; hinge margin fairly strong ; 

 cardinal teeth solid, much elevated, furrowed above ; lateral teeth 

 very long, the anterior much longer than the posterior ; margin of 

 the hinge much dilated in the vicinity of the two cardinal teeth ; 

 muscle-scars shallow. 



Long. 32, lat. 36^ diam. 24 mm. 



ffab. India. 



Type in Sandberger Coll., Wurzburg. 



360. Corbicula picta, Clessin. 



Corbicula picta, Clessin, in Martini & Chemnitz, 1879, p. 179, pi. 31, 

 figs. 12, 13. 



Shell small, somewhat iuequivalve, slightly inflated, moderately 

 solid, strongly concentrically ribbed, the ribs being rather closely- 

 set, slightly shining, covered with a dark-green periostracum and 

 ornamented with black, radiate bands running from the umboues 



