4 Dr. H. A. Pilsbiy on 



votvis, Pils. (1900), is thought by Dr. v. Mollendorff to have 

 affinities with Gastrodonta or tiesara. The internal teeth in 

 K. japonica are short transverse barriers at intervals of one 

 third of a whorl, precisely similar to those found in Euconulus 

 fuhus (Drap.), var. dentatus (Sterki), with which K. multi- 

 volvis has many features in common. A similar barrier exists 

 in KalieVa ruga, God win- Austen, and some other Indian 

 species. In K. multivolvis the barriers are very inconstant, 

 completely lacking in some examples, varying in others from 

 one to three in number. The same inconstancy attends the 

 development of internal teeth, barriers, or laminae in G astro- 

 donta y Sagda, &c., in which the same species may have them 

 strongly developed or totally absent, as is well recognized by 

 all American students who have investigated the matter. In 

 my opinion, therefore, Gastrodontella has no valid claim to 

 generic rank. It belongs to Kaliella. 



It is not my purpose to discuss the classification of Japanese 

 Helicidse at any length in this place; but a single group calls 

 for jemark. In my ' Guide to the Study of Helices' I pro- 

 posed, under the name Mandarina, a new section of the genus 

 Eulota for the reception of Helix mandarina, Gray, of the 

 Bonin Islands (Ogasawara-sima). It is now my opinion that 

 this group has nothing to do with Eulota, but probably 

 belongs to the Camseninse. The nepionic shell is relatively 

 large and acutely carinate (as in Camcena), is sculptured with 

 fine radial wrinkles at first, with spiral stria? on the outer 

 whorl, and usually continuing upon the postnepionic whorls. 

 The adult shell is extremely heavy for a land-snail, and has 

 a blunt expanded lip. The group is probably of generic 

 rank, and will for the present include three species Helix 

 mandarino, Gray, tL Pallasiana, Pfr. (hitherto referred to 

 Oxytes), and Nanina Ituschenbergeri, Pilsbry. The latter 

 two are depressed and openly umbilicate, and will form a 

 separate section of the genus Boninia. All of them are 

 probably confined to the Bonin Islands, although they have 

 been attributed to various localities. The Bonin Islands 

 have incontestably a fauna of " continental " type. 



The new species described from Japan, the Loochoo and 

 Bonin Islands, in the twenty-two papers published since 

 Jan. 1, 1900, are as follows. I have appended to each, where 

 necessary, notes on the synonymy &c. The list is arranged 

 chronologically, and the papers are referred to by their 

 numbers in the bibliography following. 



Diplomrnatina tenuiplica, Pilsbr}- (i. p. 525). 

 Ennea iwakawa, Pilsbry (i. p. 525, pi. xii. fig. 10). 



