]<>( kl II. OK I "l;< '\ l< 1.1; AN BKAX( II. IG7 



Arniocera8 Hartmanni. h 



I .•II I . 11 1 - I .1.111 I ii; I. I «. ~. ..... ... I -1 . -VII I 



Amm I I ' i ii 1 ' r .1 ;:.i. ] . 7.' . \\ iirt .1 . \ 1 I 



Amm. gtvmeir, ■.-, t»ii> i 



Am. I . , Hyatt, Bull. W N 



Amm I D*0 



.l»'i S 



Amm. • 



Semur, 1 



Tli baa more compressed adult whorls than any variety ■•• I 



costtitum. and, although the pilse are similar, they begin t" appear at an earlier 

 • veloped more gradually. The abdomen is also in main 

 though not in all, distinctly channelled, and the keel prominent 

 In one specimen the superior lateral lobes are nearly as long a> the abdominal 

 a the sixth whorl, and on the Bame whorl in another they were two fifths 

 The inferior lateral Baddli per than the superior laterals, and 



the inferior lateral lol short. 



A specimen in the Museum <>i" Stuttgardt, collected by Prof. Fraas, is from 



... IT \ 5026 of that collection); another, from Gmund, 



md in the Geometricus bed, and is labelled .1 A , D'O Two 



-. from Hehl. i. are labelled .1 Q nst. ; these belong to his 



|y ribbed variety, which is just intermediate between Am. II w", and 



M>iiie latum. 



\ - men of/a Q enstedt, figured by him. 1 is described as partly 



unrolled. Examination of the broken end. however, shows that a calcareous 

 worm tube "iied the distortion by having been built upon the abdomen 



of the -hell. This is a common occurrence, and was observed in Beveral 



Semur. There are others, however, in which this distortion, 

 other ■ Ammonitinse, takes place without the presence of any :• 



the whorls. Such example- have been named I /.' i and 



1/ i: These and other cases Bhow the kind of error likely to 



r from th< h name- a- Criocei I ras, etc 



The flattened sides and genera] aspect of Quenstedt's figure of/Vi 



pparently more nearly with this species than any other known 



i ommonly nam- . < >ppel, in 



ii Qermany, and seems to have been in pari i with that 



1 ' pel. 



