On new Species of Nyctinomus. 501 
incurvati, paulo ante medium locati, approximati; margo dorsalis 
anticus valde declivis, leviter concavus, posticus convexus, area 
ligamenti angusta. Pagina interna alba, ad marginem crenulata, 
duplicata ; cardo normalis. 
Alt. (umbono-marg.) 8, lat. (antero-post.) 9, diam. 6 millim. 
Hab. Hirado Higen. 
Somewhat resembling a small specimen of the Tasmanian 
C. Gunni, Desh., but the ribs are broader, less numerous, 
and with narrower interstices. 
Felania minor, sp. n. 
Testa cordato-ovata, compressiuscula, paulo altiore quam lata, 
pallida, nitens, leviter concentrice striata; umbones prominentes, 
acuti, leviter incurvati; margo dorsalis utrinque valde declivis, 
lunula nulla, ligamentum parvum. Pagina interna albo irregu- 
lariter fasciata, ad marginem levis; impressiones musculares 
elongati, linea pallii haud sinuata; cardo dentibus centralibus 
duobus, unus bifidus in utraque valva, munitus. 
Alt. 44, lat. 4 millim, 
Hab. Hirado Higen. 
A shell somewhat resembling F’. sericata, Reeve, on a 
small scale. 
Pectunculus mundus, sp. n. 
Testa oblique suborbicularis, depressiuscula, albida, maculis 
fuscis paucis sepe angularibus picta, concentrice sulcata, radia- 
tim costata, costis planulatis latiusculis confertissimis, superne 
subgranulosis, interstitiis angustissimis ; umbones prominentes, 
approximati; area ligamenti brevis, angustissima. Pagina 
interna obscure radiatim lirata ad. marginem crenulata; cardo 
normalis, 
Alt. 11, lat. 114 millim. 
Hab, Hirado Higen. 
This pretty little species is allied to P. pectinatus, Lamk., 
and P. pallium and morum, Reeve. The radiating ribs are 
peculiarly flat, and the spaces between them very narrow. 
XLIX.—Three new Species of Nyctinomus. 
By OLpFIELD THOMAS. 
Nyctinomus fulminans, sp. 0. 
General characters of NV. africanus, Dobs., but with 
whitish belly and conspicuously smaller skull. 
Size large, though rather smaller than in africanus. Jars 
Ann. & Mag. N. Hist. Ser.7. Vol. xii. 33 
