30 MR. G. B. SOWERBY ON NEW SPECIES OF SHELLS. [Jan. 16, 



EXPLANATION OF THE PLATES. 

 Plate V. 



Eig. 1. Aloa tnarginata, n. sp., p. 15. 



2. Baradesa Uthosioides, n. sp., p. 17. 



3. 3 a. Thaumatoijcea clieela, n. sp., p. 18. 



4. Taragama iniensa, n. sp., p. 18. 



5. hyperantherm, n. sp., p. 18. 



Plate VI. 



Fig. 1. Gonitis trilineata, n. sp., p. 21. 



2. Bonda striatovirens, n. sp., p. 23. 



3. ornata, u. sp., p. 23. 



4. Naxia duplexa, n. sp., p. 26. 



5. Ophiusa acuta, n. sp., p. 27. 



6. Burdara fenestrata, n. sp., p. 27. 



7. Bonagara bivittata, n. sp., p. 27. 



8. dccussata, n. sp., p. 27. 



9. vialis, n. sp., p. 27. 



10. Acharya costalis, n. sp., p. 28. 



4. Descriptions of Five new Species of Shells. 

 By G. B. SowERBY, Jan. 



[Eeceived January 8, 1883.] 

 (Plate VII.) 



Lima goliath, sp. u. (Plate VII. fig. 3.) 



Shell rather obliquely oval, white, semitransparent, striated at the 

 sides and on the auricles, otherwise smooth ; anterior side with a 

 depressed lunule, making a straight outline extending from the 

 umboues about half the length of the shell ; thence the out- 

 line is curved ; umbones acute ; cardinal area deeply excavated ; 

 anterior auricles small and very sloping, posterior large ; valves 

 nearly closed on the hinder side, slightly gaping in front. 



Long. 150, lat. 110 mill. 



Hab. Japan. 



This magnificent species, the largest of the genus, appears to 

 have been hitherto undescribed. It is of stouter substance and not 

 so inflated as the Norwegian species {L. excavata). Its surface is 

 smooth, excepting at the sides, which are rather roughly striated. 

 The cardinal area is larger and deeper than in the specimens before 

 me of L. excavata. 



This specimen was sent to me from Japan, and now belongs to 

 the rich collection of Dr. Prevost, of Alen9on. Another specimen 

 has recently been brought by Dr. Iluugerford from Japan, the 

 latter being a very old shell, larger and thicker than the type, with 

 its surface much eroded and worm-eaten. 



Thracia jacksonensis, sp. n. (Plate VII. fig. 5.) 



Shell obliquely oval, white, covered with a very thin pale epidermis, 



