36 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 95 



By far the most extensive work on the group was done by P. M. 

 Heude (8), who, in the same year, 1890, pubHshed six additional 

 species in his memorable work on the terrestrial and freshwater 

 mollusks of the valley of the Fleuve Bleu. Here he refers all the 

 species to the genus Hemibia. He gives figures of the shell of Hemihia 

 sclwmckeri on plate 33, figure la, and of the soft parts on the same 

 plate in figures i to 5, and of the radula, figure 7 (enlarged 400 

 times). The material upon which these studies are based came from 

 " Grand Lac " (Lake Tai Hu). 



He here lists Hemihia hupensis Heude, which his figure 19, plate 

 33, plainly proclaims to be Oncomelania schmackeri. 



His next species is Hemibia sublevis, which he figures on plate 33, 

 figure 15. This figure agrees with Schmacker and Bottger's descrip- 

 tion and figure of Oncomelania mocllendorfU, and comes from almost 

 the same locality. 



Both Oncomelania moellendorfU and Oncomelania sublevis were de- 

 scribed in 1890. Schmacker and Bottger's paper was published in 

 the July-August number of the Nachrichtsblat. No exact date for 

 Heude's publication is available. It was reviewed in October. I shall 

 accept the name moellendorfU, unless it is proved tO' be antedated by 

 sublevis, because it was better described. 



His next species, Hemibia carcctorum, is figured on plate 33, figiu-e 

 16, and is said to come from the left bank of the Yangtze opposite 

 Nanking; this I believe also to be merely a form of Oncomelania 

 schmackeri. 



His next species, Hemihia luteola, we also feel is nothing but a 

 variant of Oncomelania schmackeri; it is his figure 17. 



Hemibia crassa Heude, plate 33, figure 18, comes from farther 

 up the Yangtze, namely, " Tong-lieou " (Tungliuhs), Anhwei Prov- 

 ince. We have no specimens from that region and quote his text 

 and figure. 



His next species, Hemibia longiscata, is figured on plate 2>2» figure 

 20, and comes from opposite " Kin tcheou-fu " (Kingchowfu) , Hupeh 

 Province. 



His last species, Hemibia costulafa, like the foregoing, represents 

 the most western location known. He does not figure it, but the 

 sculptural characters and size make me hesitate to refer it to the 

 large species. We shall, therefore, consider it distinct and quote his 

 description. It comes also from the same locality as the last. 



Heude's many names and the lack of comparative material evidently 

 held up further advances in our knowledge of Oncomelania. It was 



