226 



Legit H. Cuniing in Peruvia et America centrali (Gulf 

 of Nocoiyo; a smaller variety at Tumbez). 

 Proceedings. 1832. p. 196. 



FAM. V. VENERACEA Mke. 



^5. VENUS Linn. (cliama Adans. ; tapes et chione 

 Muhlf.; antigona, mercenaria et tapes Schura.) 



L Veniis rosalina Rang, 



V. testa crassa, subrotundata, lateraliter subcompressa, 

 natibus parvis, parum prominulis; costis numerosis concen- 

 tricls (circa triglirta in adultis), regula]'ibus, complanatis^ 

 infra siipatis; roseo-alba, radiis qualuor magnis roseis, ab 

 apice marginem versus senslm latioribus, ultimo minus cou- 

 spicuo, maculis quatuor elongatis brumiels; marglne supe- 

 riori crenulata. — Th. M. 



Long. med. 42 millim., alt. med. 38 millim., crass. 

 med. 25 millim. 



Latus internum superne macula violacea ornalum; car- 

 dinis margo interlor postice purpuratus. Impressiones mu- 

 sculares valde couspicuae, subluteae; impressio palliarls an- 

 gusta, superlicialis. — Animal subpellucidum, album: sa- 

 pore grato. 



Legit Rang ad littora Afrlcae occidcntalls , ad Goream 

 insulam. 



Guerln, magasin de zool. L class. V. (nr. 42 et) pl. 42. 



2. Venus gemma J, G. Totten. 



V. testa subrotunda, subaequllatera, nltida, concentrlce 

 striata; margine crenulato; natibus angustis, incurvis, se- 

 paratis, plerumque erosls; lunula nulla; rubro-purpurea, su- 

 perne et postice obscurlore, anterlus et ad basln extus in- 

 tusque alba vel palllde rubro-violacea. — Tk. M. 



Long. 0,15 poll. (ac si long. 0,13 essct: tunc lat. 

 0,12 polL, et diam. 0,6 poll. foret. ) 



Dentes divergentes, medius utriusque valvae triangu- 

 laris, anterior valvae dextrae et postei'Ior sinistrae exlgui, 

 panim distincti. 



