1870.] MR. H. ADAMS ON NEW EXOTIC SHELLS. 793 
This species is well figured by Savigny in the ‘ Description de 
lEgypte,’ pl. 10. fig. 4, but is not described. 
Nucuta 1nconsprcua, H. Ad. 
N. testa subovato-triangulari, solidiuscula, concentrice irregulariter 
sulcata, radiatim obsolete conferte striata, flavido-alba, glabra ; 
umbonibus posticis ; extremitate antica subangulata, postica ovali ; 
margine interno simplict. 
Long. 3, alt. 23, lat. 2 mill. 
Ravura renuts, H. Ad. (Plate XLVIII. fig. 18.) 
R. testa tenui, oblique ovata, albida ; disco liris minutis, confertis, 
radiantibus, ad latera distantioribus, ornata; apicibus acutis, 
elevatis, levibus ; margine byssali subangulato, modice hiante. 
Long. 8, alt. 10, lat. 43 mill. 
Rapvuta (Limatuta) pusitya, H. Ad. (Plate XLVIII. fig. 19.) 
R. testa tenuiuscula, elongato-ovali, equilaterali, radiatim costis 
(in medio fortioribus), et concentrice striis minutissimis, subim- 
bricatis, creberrime ornata, alba; apicibus tumidis, prominulis ; 
auriculis inequalibus ; margine byssali declivi, recto; margine 
ventrali crenulato. 
Long. 34, alt. 5, lat. 3 mill. 
Note.—I described, in a former paper (P. Z. S. 1869, p. 274), a 
Turbonilla from Vigo under the name of 7’. speciosa. As I find that 
name to be preoccupied, macandree may be substituted for it. The 
same remark applies to a Tellina from the Red Sea, which I desig- 
nated (P. Z. 8. 1870, p. 6) 7. virgulata, and which may be called 7. 
erythreensis. 
I may add, that among the shells recently brought by Mr. 
Swinhoe from the interior of China is one which I consider to be 
a variety of Helix maacki, Gertsf., but which differs sufficiently to 
render the following description of it desirable :— 
Hewrx (Camana) MAACKI, Gertsf. 
Var. 6. uN1zoNALis. Spira anfractibus minus convexioribus, an- 
fractu ultimo majore, fascia una castanea ad peripheriam ornato. 
Hab. Ichang gorge, China (Mr. Swinhoe). 
10. Descriptions of two new Genera and five new Species of 
Shells. By Henry Apams, F.L.S. 
(Plate XLVIIL.) 
Genus Puanera, H. Ad. 
Testa imperforata, trochiformis ; spira anfractibus paucis, ultimo 
carinato, expanso, basi depresso ; apertura ampla, rotundata, an- 
