170 



A small inflated species, concentrically striated like Dosinia, resem- 

 bling in form D. varians and limatida, but quite destitute of coloring. 



Cardilia gemmulata. T. minuta, solida, alba, quoad altitudi- 

 nem ovato-triangularis, sub-obliqua, striis concentricis el radiantibus 

 decussantibus elevatis insculpta, intersectionibus nodosis; umbonibus 

 acutis, uncinatis; margine antica fere verticali ; tnarg. posticft primb 

 recta, deinde* arcuata et in marginem ventralem semicircularem 

 desinente ; valvis satis convexis fere tectiformibus ; margine interna* 

 undulato-dentata ; tabella ligamentali fere obsoleta. Long. 2; alt. 

 2.5; lat. 2 millim. Inhabits China Seas. W. S. 



This is the third species known, and well distinguished by its 

 sculpture. Only one valve was obtained. 



Nucuux.v pretiosa. T. minuta, oblique ovato-erescentica, 

 polita, nitida, fusco-viridis ; apice acuto, curvato; margine dorsali 

 primb recta, dein valde arcuata; margine ventrali incurvata; ex- 

 tremitate rotundata; pagina interior] virescente ; tabella cardinali 

 lata sensim retrorsum angustata : denticulis binis subapicalibus, dunlins 

 anticalibus, tribus post-apicalibus, laterali elongate, elevato, falcato, 

 albo. Long. 4; lat. 3; alt. 3 millim. Inhabits Simon's Bay, Cape 

 Good Hop... w. s. 



This curious shell greatly resembles an apple-seed, and seems to be 

 the only recent species yet obtained. One or more fossils have been 

 found in the Eocene, on which the genus was founded by Deshayes. 

 The lateral tooth is so large, and bridges over the umbonal cavity so 

 peculiarly that a single \alve might be taken Cor a specimen ofLatia, 

 were it not for the cardinal range of denticles which are like tenon 

 and mortise articulation-, and not comblike, as in Nucula proper. 



LORIPES ROTATA. T. solidula, flavescens, orbicularis, subglobosa, 

 striis concentricis irregularilms utrinque plus minusve coalescentibus 

 insculpta; umbonibus medianis parvis; lunula profunda, striis im- 

 pressis hand remotis inclusa; margine interna concinne crenulata ; 

 cicatricibus profundis; sulco cardinali elongate; dente cardinali 

 valido; dente laterali postico parvo; antico obsolete. Diameter 59 ; 

 lat. 5 millim. Inhabits Loo Choo. W. S. 



Gouldia dilecta. T. minuta, obliqua, rotundato-cordata, subglo- 

 bosa, alba, polita, antice admodum concentrice undulata ; umbonibus 

 submedianis; margine interna simpUci ; sinu palliali obvio. Long, et 

 alt. 4; lat. 2 millim. Inhabits Kagosima. W. S. 



The generic characters are, well marked, and this is the only species 

 yet known from the Eastern Seas. 



Mysia (Felania) ista. T. oblique rotundato-ovata, lenticularis, 

 crassa, concentrice undulata, epidermide piceS dura induta ; umbonibus 

 vix antemedianis, acutis; lunula parva, lanceolata; extremitate antica 



