1 



398 Dr. J. Gwyn Jeffreys on Mediterranean Mollusca. 



which bulges and takes up nearly half of the spire ; top 

 whorl globular : suture rather straight, well defined, but 

 not deep : mouth oval, acute-angled above and below ; its 

 length equals about one third of the spire : outer lip sharp- 

 edged : inner lip inconspicuous : pillar short and straight : 

 base somewhat flattened, imperforate. L. 0*05, B. 0*025. 

 Of this remarkable species ten specimens were found. 



Eulima perminima * , Jeffreys. (PI. XVI. fig. 6.) 



Shell slender, rather solid for its minute size, semitrans- 

 parent, and glossy : sculpture, none : colour clear white 

 with a faint and irregular tinge of yellowish brown on the 

 body-whorl: spire long, straight, and rather bluntly pointed: 

 whorls 6-7, compressed and compact; last whorl (the 

 mouth being placed upwards) forming nearly half the shell ; 

 first whorl semiglobular : suture slight, Jrat distinct, 

 straight! sh : mouth roundish-oval, contracted above, equal 

 in length to one fourth of the spire : outer lip not very 

 thin : inner lip conspicuous and reflected : pillar curved : 

 umbilicus none. L. 0'05, B. 0'03. 



Eight specimens. 



This almost microscopic species differs from E. distorta 

 (Philippii, Weinkauff) and its variety gracilis {beryliina, 

 Monterosato) in size, being proportionally narrower through- 

 out and having a shorter spire and smaller mouth. I have 

 also detected the present species among my Zetlandic shells. 



Natica flammulata , Hequien. 

 Neritina viridis, L. 



Family Solariidae. 



Bkugnonia, n. gen. 



Shell globosely conical, imperforate : pillar angulated 

 and spread out at its base. 



The shell in different genera of this family is not always, 



(which 



Woodwa 



he strangely placed in the Littorinidce, and regarded as the 

 only genus of the present family), " Orbicular, depressed; 

 umbilicus wide and deep." The umbilicus is not a uni- 

 versal character in the Solariidae. Of the hitherto known 

 species of Seguenzia two have a wide umbilicus, while the 

 typical species is imperforate. In Solarium Jvjbridum (the 

 type of Gray's genus Philippia) the umbilicus is reduced to 

 a small and narrow perforation. 



* Exceedingly small. 



