857 



rounded and nearly obsolete; dorsal valve acuminated behind, 

 mth a large incomplete triangular perforation ; cardinal area of 

 moderate size, flattened, with small, narrow deltidia; ventral valve 

 transverse, with a straight hinge Kne; internal appendage con- 

 sisting of a single elevated central ridge ; inner margin of the 

 valves thickened and granulous- 



From deep water at Drepani ; in Mr. Cuming's Collection. 



28. Terebratula sanguinea (pi. Ixxi. f. 71-73.) nobis. Anomia 

 sanguinea, Chemn. T. erytliroleuca Quoy. 



Testa suborbiculari, antice subemarginata, gibbosiuscula, tenui, 

 sanguinea, radiis maculisque radiantibus albidis ornata; lined 

 marginali recta, antice subsinuata -, valva dorsah postice subacumi- 

 nata, truncata, foramine mediocri, integro, area cardinali latiuscula, 

 marginibus subacutis, deltidiis majusculis, coalescentibus ; valva 

 ventrali depressiuscula, transversim obovata, antice subsinuata, 

 cssiculo interno primmn format radios duos, deinde annulum cen- 

 tralem et amenta dua lateraha, demiim amentum superum reflexum 

 annulo centrali adjunctum ; margine valvarum integro. 



Shell suborbicular, shghtlj notched in front, rather gibbous, 

 thin, of a bright light red colour Avith white rays and radiating spots • 

 marginal line straight, slightly sinuated in front ; dorsal valve 

 rather acuminated beliind and truncated ; perforation middle-sized, 

 complete ; cardinal area rather broad, with sharpish edges ; delti- 

 dia rather large and united; ventral valve somewhat depressed, 

 transversely obovate, slightly sinuated in front ; the internal ap- 

 pendage at fii-st forms two rays, then a central ring and two lateral 

 loops, and at length a reflected dorsal loop united to the central 

 ring ; margin of the valves entire. 



From the Island of Zebu, attached to Coral under stones; 

 H. Cuming. 



29. Terebratula rosea (pi. Ixxi. f. 74-77.) Humphrey. 



Testa oblongo-ovali, subdepressa, postice subattenuata, crassa, 

 rosea, albicante, radiatim picta ; valvis subsequalibus, Irevibus ; 

 linea marginali subflexuosa, antice reflexa ; valva dorsali majori,' 

 postice subproducta, truncata, foramine minimo, integro ; area cai'- 

 dinali latiuscula, cum deltidiis coalescentibus, sulco mediano dis- 

 cretis ; valva ventrali ovali, antice paululiim rotundato-attenuata ; 

 linea marginali ex mnbone ad utrumque latus declivi, ossiculo in- 

 terno costa elevata, porrecta, simplici constante ; margine valvarum 

 integro. 



2f 



