i iiiki>. OR \ i:i:mi< i k \n BR \s< 11 



tlif pita, but the Bpeoiraen Bhows distinctly that the form of die adult is more 

 coin pressed than in vith more convergent sides, and it tuu tuber- 



It i- precisely similar to the original of I' < Irbignj s Bottnardi in the Ecole 

 • - M ■■■■' l /■' ' gured by Wright i~ occurring in the Turneri bed, 



and ■ much more discoidal form is regarded 1>\ him a.s the true I i and 



Ggured aa such The great flatness of the whorls and aspect of the whole shell 

 in thU probably the effecl Phe sutures figured have senile pro- 



portions, th<- abdominal lobe !»*• i n ^ of about the same length as the superior lat- 

 imens figured by Hauer from the Northeastern A.lps, and l>\ 

 Herbich from Siebenburgen, have more convergent sides and l«-<s angular L r >- 

 nicuta than is common in Central Europe, The variety from Luxemburg is ven 

 like the ii lul varieties in Enirhind. 



planaries 



i , Fbaas, MS 







^••iinir 



Th>- specimen in the Museum ■>!' Comparative Zoology on the ninth whorl 



had an abdominal lol ne half longer than the superior lateral lobes, and 



inferior lateral Baddies one half deeper than the superior laterala The in- 

 lateral lobes, however, are somewhat longer than the superior laterals, 

 and the first and second auxiliaries, which bIiow plainly on the Bides, are still 

 than these. Thus the Biiturea appear to incline rapidly towards the 

 umbilicus, as in I but this is a delusion due to the peculiar proportions 



of the auxiliary Tin- outlines of the superior lateral Baddies are covered 



by the involution of the whorl, instead of being in part exposed, as in Conybeari, 

 in which last, also, these •• apparently broader. The superior lateral 



saddles are divided b\ a single marginal lobe. 



- mi the first quarter of the tenth 

 . and on the second the same whorl the abdomen bos Buffered a 



ition in breadth. I I here is no 



. -n. but the pita !"•'' hi neat it- tei min 



the adult is similar to ( 

 On: citnen of this \ irred in P collection ; it 



is placed willi /.' tion with relation t" that spei onsid- 



ered uncertain Pro insiders it a new - 1 ■■ •• ■ i ■ • - under the nan f 



1 itlj from th t' the specimen dea 



i the form it is more lik<- it than either of them \t ' 



On the lost \olntioii of tli i the pita are almost obsolete, the ke< I more 



nent, the chani ly shallower than in th<- adult 'I ":.■■ form "I 



the whorl i nd t<» converge, nnd the abdomen is 



• 



I • • 1 1 .'. »'( ) 



