REPORT ON THE [.AMELLIBRANCHIATA. 125 



Venufi (Chione) marica, Liunc. 



Venus miirica, lAnni, Syst. Nat., eil. 12, p. 11.30. 



Venus marica, Chemnitz, Conch.-Cab., vol. vi. figs. 282-284. 



Venus marica, Sowerby, Thes. Conch., vol. ii. pi. dvii. fig.s. 107-110. 



Venus marica, Reeve, Conch. Icon., vol. .\iv. fig. 104, a-r. 



Habitat.- — Levuka, Fiji Islauds, iu .shallow water (Cliallenger) ; Ovalau and ^latuku, 

 Fiji, in 12 fathoms (Brit. Mus.) ; Philippine Islands (Cuming); Reunion (Deshayes) ; 

 Mauritius (Mobius). 



This species is so well known that it is unnecessary to give further references than 

 those above mentioned. It must not, however, be mistaken for Veiius recognita, which, 

 although very like it at first sight, is perfectly distinct. Venus marica is more finely 

 costate, and has not the fine posterior radiating lirse of that species nor the frill-like 

 concentric lamelliB ; its internal margin is more coarsely denticulate, and the dorsal area 

 differently sculptured. 



Venus [Chione) recognita, n. sp. (PL III. figs. 5— 5e). 



Testa ovato-subtrigona, j)ostice aliquanto angustata, fere sequilateralis, albida, plus 

 minusve fusco vel rufo irregulariter (interdum subradiatim) picta. Yalvas mediocriter 

 convexEe, concentrice liratse, radiatimque costata?, granulatte, liris postice prope aream 

 breviter lamellatis, tenuibus, costis paucis ad latus anticum quam cseteris majoribus, 

 aliisque posterioribus aliquanto tenuoribus. Margo dorsi utrinque valde declivis, leviter 

 convexus, extremitatem posticam versus ssepe levissime sinuatus. Latus anticum late 

 rotundatum, j^osticum angustatum, subcuneiforme. Margo ventris late areuatus, postice 

 frequenter indistincte sinuatus. Lunula variabilis, elongato-cordata vel lanceolata, in 

 medio prominens, sulco angusto profunde circumscripta, fusco maculata, radiatimqiie 

 lirata. Area lanceolata, haud radiatim lirata, striis incrementi tenuibus solum 

 sculpta, maculis magnis fuscis plerumque picta. Pagina interna all)a, violaceo-fusco 

 irregulariter maculata, margine minute denticulato. Sinus pallii parvus, angustus, 

 brevis. Dens mediauus cardinis iu valva sinistra et duo posteriores valvaj alterae ad 

 apicem bifidi. 



This species is almost equilateral, moderately convex, longer than high, triangularly 

 ovate, broadly roundish in front and somewhat acuminated posteriorly. It is whitish, 

 irregularly stained and spotted with reddisli-l)ro-mi, sometimes in the form of more or 

 less interrupted rays. The sculpture consists of concentric and radiating ridges which 

 are closely packed, and at the jwints of contact form rounded bead-like granules. A few 



