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Show 1866.] MR. H. ADAMS ON NEW FORMOSAN SHELLS. 319 my brother and myself in the genus Pupinella, from which, however, on further consideration, I think it would be well to separate them. These species form a natural group having the texture of Pupinella, but with a posterior sinus in the aperture as in Pupina, and for which I would suggest the name Pupinopsis. 13. LIMN^EA SWINHOEI, H. Ad. (PL XXXIII. fig. 13.) L. testa ovata, fragili, irregulariter striata, pallide cornea; spira acuminata; anfr. 4, convexiusculis; apertura oblongo-ovata, J-totius longitudinis arquante; columella valde sinuata; labro flex-uoso, in medio subsinuato. Long. 21, lat. 12 mill. Hab. Takow, Formosa (Mus. Brit.). 14. SEGMENTINA SWINHOEI, H. Ad. (PL XXXIII. figs. 14, 14 a.) S. testa depressa, orbiculari, concavo-convexa, nitida, luteo-cornea, late umbilicata; anfr. 5, apicalibus arctissimis, excavatis, ultimo declivi; sutura impressa; apertura obliqua, lunata, fauce in fundo dentata. Diam. maj. 10, min. 9, alt. 4 mill. Hab. Tungkang (fifteen miles below Takow), also in ponds and rice-fields at Takow, Formosa (Mus. Brit.). 15. UNIO SWINHOEI, H. Ad. U. testa tenui, ovali-elongata, inarquilaterali, convexiuscula, antice circulari, postice dilatata, subrotundata; epidermide fusco-cas-tanea induta; margine dorsali subrecto ; umbonibus parvis, undu-latis, erosis; dentibus exilibus, rectis, ad marginem parallellis; margarita argentata. 1 Long. 60, alt. 39, lat. 22 mill. Hab. Formosa (Mus. Brit.). DESCRIPTION OF PLATE XXXIII. Fig. 1. Nanina (Acusta) assimilis, p. 316. 2. Helix (Plectotropis) fulvicans, p. 316. 3. (Camesna) bairdi, p. 316. 4, 4a. (Camana) succincta, p. 316. 5. Bulimus (Amphidromus) formosensis, p. 317. 6. Clausilia (Laciniaria) exilis, p. 317. 7. Clausilia (Phcedusa) formosensis, p. 317. 8. Ennea (Elmo) swinhoei, p. 317. 9. Cyclotus swinhoei, p. 318. 10. Cyclotus minutus, p. 318. 11, 11a. Alycmus (Dioryx) swinhoei, p. 318. 12, 12a. Pupinella (Pupinopsis) swinhoei, p. 318. 13. Limncea swinhoei, p. 319. 14, 14a. Segmentina swinhoei, p. 319. |
