Review of Recent Geological Literature . 383 
REVIEW OF RECENT GEOLOGICAL 
LITERATURE. 
Rese.irches into the MonogmptidcE of the Scunian Rastrites Beds. By 
S. L. ToRNQUiST. (Lunds Universit. Araskrift. Bd, 35, Afdel. 2, No. 
I, Lund. 1899.) 
Under the above title Prof. Tornquist gives a further account of his 
studies on the Swedish (Upp.) Silurian Graptolites. The present me- 
moir is confined to the Monograptidas, the Diplograptidas and Hetero- 
prionidae having b^en treated of in a m^mDir published in 1857. (Acta 
Universit. Lund. Tom. xxxiii, Andra afd. Lund, 1897.) 
The species of these beds are fully described and Prof. Tornquist 
savs there is, besides, much material too fragmentary for treatment. 
Quite a number of species are those of Lapvvorth, Portlack, Barrande 
and other authors, and ten new species are described. Four plates of 
admirably executed figures accompany the memoir. G. f. m. 
Palceontologiska notiser af Gerhard Holm. (Geo). Foren. i. Stock- 
holm Forhandl. Bd. 20, Hft. 7, 1898.) 
11. Om ett par Bactrites-likands Undersiluriska Orthocer~for»ier. 
The red Lituite limestone of Falkoping and Oeland has yielded to 
Dr. Holm two Orthoceras-like cephalopods which he refers to a new 
genus, '"Bactroceras." He says that they are without doubt of the same 
generic type as "■Bactrites sandbergeri"' of Barrande found in Bohemia 
and coming from Dd., or the base of the Lower Silurian. The species 
which Dr. Holm cites were originally described by Riidiger from drift 
blocks found in the surface deposits of Mecklenburg in Germany and 
placed by him under Endoceras. The new genus is characterized by a 
thread-like marginal siphon, with long funnel-shaped septal tube, etc. 
A plate of figures shows graphically the characters of the genus. 
12. 0)11 skalspetseii hos Estonioceras. 
In the glauconitiferous V'aginatum limestone of Oeland Dr. Holm 
has found some well preserved initial parts of the shell of a species of 
the genus above named, which he figures and describes. The genus 
was based by Xoebling t»n E. lamellosiim His. A plate of figures ac- 
companies the article and gives a very good and clear expression of the 
characters of the genus. 
13. Om den yttre anatomie)i hos Evryptenis Fischer i. Idem. Bd. 
21, Hft. I, 1899. 
This is a very full account of the anatomy of the crust of Eurypterus 
rischeri Eichwald. There is an introductory part giving an account of 
the work of earlier authors on the anatomy of Eurypterus— Xieszkowski, 
Hall, Woodward and Laurie. The form of the body and the difference 
of the species from E. ramipes Hall is discussed. The distinctions of 
sex in the species E.fischeri are described and comparisons made with 
the modern Limulus and Slimonia acuminata Salt. A full description 
is given of the claw-antennas and of the several pairs of feet attached 
