448 



CYRENIDjE. 



Paranensis, D'Orh. 

 pulchella, Moms. 

 pullata, Phil. 

 pusilla, Phil. 

 radiata, Phil. 

 recurvata, Eydoux. 

 rivalis, V. d. Busch. 

 semisulcata, Desk. 

 similis. Gray. 



squalida, Desk. 

 striatella, Desli. 

 sulcatina, Desk. 

 triangularis, Desk. 

 trigona, Desh. 

 tumida, Desh. 

 variegata, D'Orb. 

 Woodiana, Lea. 



Genus BATISSA, Gray. 



Shell sub -cordate, solid, covered with a thick, horny, 

 greenish epidermis. Hinge with three cardinal teeth in each 

 valve, the front in the right, and the hinder in the left valve 

 smallest ; lateral teeth compressed, striated, the anterior 

 very short, the posterior elongate. 



Ex. B. tenebrosa, Hinds, pi. 1 1 1, fig. 1, 1 3 a. 



In this genus the shells are solid, and covered with a 

 dark, thick epidermis ; they are also frequently eroded at 

 the beaks. The species are met with in Sumatra and Java, 

 the Philippines, Australia, and the Islands of the Pacific. 



Species of Batissa. 



atrata, Desh. 

 Childrense, Gray. 

 corbiculoides, Desh. 

 eximia, Dhr. 

 hurnerosa, Desh. 

 insignis, Desh. 

 Jayeusis, Lea. 

 Keraudrenia, Less. 



lenticularis, Desh. 

 megadesma, Desh. 

 obesa, Hinds. 

 producta, Desh. 

 rotuiidata, Lea. 

 tenebrosa. Hinds. 

 triquetra, Desh. 

 violacea, Lam. 



