Quarterly Journal of Co iicJioIogy. 193 



the jaw with separate delicate ribs, usually oblique. 



The genera whose jaw is in one piece with an accessory quad- 

 rate piece, are Succinea, Omalonyx, Hyalhiiax, and AthoracopJiorus. 

 Orthalicus, Liguus and Pu/uiuni, have the jaw in separate pieces. 

 Then follows a dissertation on the value of the jaw and lingual 

 membrane for purposes of classification and an arrangement of the 

 North American Pulmonata in accordance with the scheme advo- 

 cated of which the foregoing is an epitome. 



Journa! de Conchyiiologie, July, !876. 



Watson, Rev. R. B. — Note sur les ccquilles terrestres com- 

 munes a Madere et a d'autre contrees, considerees au point de vue 

 de la distribution des especes (Note on the land shells common 

 to Madeira and other countries, considered from the point of view 

 of the distribution of the species), pp. 217 — 232. 



33 land and freshwater shells are common to Madeira and 

 other localities ; 146 being peculiar. Six of the 2)3 species are con- 

 fined to one or two gardens, etc., and are certainly foreign to the 

 fauna; 6 others are also probably recent importations; 7 others 

 vrere probably introduced about the period of the first settlement 

 of the islands ; 4 species were probably imported independently of 

 man ; 2 are rather doubtful ; 8 only can be considered indigenous 

 to Madeira, and common to it and other localities. The marvel 

 lous speciality of the Madeiran fauna is thus seen. Putting aside 

 the imported and the doubtful species, only 8 out of 154 truly 

 Madeiran shells are found in other localities. 



Fischer, Dr. P. — Description d'un nouveau genre de Coquille 

 des mers de la Chine (Description of a new genus of shells from 

 the China seas), pp. 232 — 235. 



The new genus, Hoplopicrgn is remarkable for wing-like pro- 



