28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 95 



KATAYAMA FAUSTI Bartsch 



Plate I, fig. 2; plate 2, fig. 10; plate 4, fig. 5 



1924. Oncoiuclania nosophora Annandale, Amer. Journ. Hj'g., Mon. Ser. no. 3, 

 pp. 283-284, in part, also p. 293. 



1924. Katayama nosophora Faust, Amer. Journ. Hyg., vol. 4, pp. 243, 269, 274. 



1925. Katayama fausti Bartsch, Journ. Washington Acad. Sci., vol. 15, pp. 71-72. 



1926. Oncomelania (Hypsobia) nosophora Germain and Neveu-Lemaire, Ann. 



Parasit., vol. 4, p. 293, in part. 

 1929. Katayama nosophora Faust, Human Helminthology, p. 136, in part. 



Shell elongate-conic, brownish horn-colored. Nuclear whorls de- 

 collated in all our specimens. The postnuclear whorls, well rounded, 

 marked by irregular, rather coarse, incremental lines, which might be 

 interpreted as closely spaced obsolete riblets, which are best developed 

 on the last turn. Suture strongly constricted ; periphery well rounded. 

 Base slightly prolonged, well rounded, marked by a continuation of 

 the sculpture present on the spire, narrowly umbilicated. The last 

 whorl is provided with a very heavy callus immediately behind the 

 aperture, which extends over the base of the lip on to the columella, 

 thickening- this materially. The outer lip is slightly expanded and 

 reflected and adnate to the preceding turn at the parietal wall. The 

 operculum is thin, corneous, paucispiral with excentric nucleus. The 



radula has the formula , 2-1-^ for the median, that is, two 



3-3 

 inner small teeth followed by a very large third and 3 small. The 

 inner marginal has 8 denticles and the outer 5. 



The type, U.S.N.M. no. 362025, as well as two additional speci- 

 mens, U.S.N.M. no. 362026, were collected by Dr. E. C. Faust at 

 Shaohing, Chckiang Province, China. They yield the following 

 measurements : 



No. of Height Diameter 



whorls in mm in mm 



U.S.N.M. no. 362025 5.4 " 6.6 3.0 



U.S.N.M. no. 362026 5.2 5.5 2.8 



4-7 6.5 3.2 



* Figured type. 



This Species can readily l)e distinguished from Katayama Hi by its 

 smaller size and radular formula, and from Katayama cantoni by its 

 radular formula and heavier coarser shell. 



