Review of Recent Geological Literature. 187 
and gives a more condensed view of the succession, condensing the 
six lower zones of Andrarum into one, that of Paradoxides tessini, 
but he divides this into three sub-zones, beginning with that of Con- 
ocoryphe exsulens. 
An interesting feature of these Bornholm sections is that while at 
one locality where the limestone of C. exsulens is present, at the other 
there is a bed of clay. Hence Mr. Groenwell assumes that this is a 
residual clay due to the decomposition of the limestone, and removal 
by solution of the lime. The fossils in the gray clay at Lsesaa show 
it to be of the same age as the limestone of Aa. At the base of 
the Exsulens limestone there was at Bornholm an erosion, cutting out 
about 5 metres of measures, as known on the Swedish peninsula. 
The genus Agnostus is well represented in the Paradoxides beds 
of Bornholm, both as regards individuals and' the number of species, 
Mr, Groenwell describes twelve new species, or varieties of species, 
already known. 
Microdiscus is found in two forms, scanicus and eucentrits, the au- 
thor reduces the latter to a form or mutation of the former. 
Conocoryphe is quite fully treated and shown to contain four sub- 
genera : (i) Conocoryphe, Corda (s. str.), (2) Erinnys, Salter. (3) 
Ctenocephalus, Corda, and a new subgenus (4) Liocephalus, estab- 
lished to contain C. impressa Lnrs., C. lyclli Salt, and probably Hol- 
ocephalina, Salt. [It seems doubtful if the last genus should go in 
its entirety to Conocoryphe, especially //. hiflafa]. Three new species 
are described under this section. 
Paradoxides. Mr. Cronwell is inclined to think, P. brachyrracliis 
Lnrs, a separate species from the. Bohemian P. rugtilosiis, to which it 
has been referred. He finds a variety of P. sj'ogreni Lnrs, (nepos) 
of much later time than the typical form. 
Dorypyge, Dames, is represented in two new species of the Born- 
holm beds, which helps to give this genus a lower position than orig- 
inally determined by Dames, as one was found in the Exsulens lime- 
stone, and both below the Andrarum limestone. This is parallel to 
the conditions in eastern North America, where the genus is found 
in beds with or below the representative of Paradoxides tessini. [The 
occurrence of these early forms of the genus seems related to shallow 
water and rough shores.] 
Corynexochus has been found in good examples, including a new 
species, C. bornhomensis. Anomocare is represented by forms already 
described (by Angelin) and by a new one, A. angelini. Of Liostracus. 
two new species are described, and of Ptychoparia, one. Solenopleura 
has one new species, and Agraulos, one. [It seems questionable 
whether this form should be referred to Agraulos ; it might with equal 
propriety go to Anomocare.] A solitary ostracod and gasteropod give 
further rarity to the fauna. 
Comparisons are made v/ith Paradoxides beds in other parts of the 
world, as various parts of Scandinavia. Wales, Bohemia, North Amer- 
ica, China. &c. A very nice distinction, only possible in such a region 
