Reviews—Dr. G. F. Matthew—The Little River Group. 288 
II.—Geronocy or rap Lirrne River Grove. 
(1) Tue Grorocican AcE or THE Litrte River Grovr. (2) Revision or 
THE Frora oF THE Lirrte River Group, No. Il. (8) RemarKasiE 
Forms or tHE Lirrne River Grove. By G. F. Marruew, 
Dese.; LD: ; 
N account of the discovery in this group of important and varied 
kinds of vegetable remains, its geological age is of much 
importance. This article is a brief statement of the geological 
evidence bearing on the age of the group. These are chiefly the 
relations to neighbouring formations which underlie or overlie 
the group, the amount of metamorphism it has undergone, and 
the lithological resemblance of the succession of beds to that of the 
Silurian strata in neighbouring districts. The conclusion is arrived 
at that the group is of Silurian age. There is a map showing the 
relations of the Little River Group to the adjoining strata. 
(2) In this paper is given an account of the type of Sir J. W. 
Dawson’s Dadoxylon Ouangondianum, and of two new Pteridosperms, 
one, Johannophyton, including Dawson’s Alethopteris discrepans and his 
Sporangites acuminatus (the latter considered as fruit bracts of the 
former): reasons are given why these should be considered parts of 
- one and the same plant; the fruit is shown to be a small oval seed. 
The other Pteridosperm is a small creeping plant with the foliage 
of Aniemites, and the fruit a small berry; it is named Ginkgophytun 
Leavittt on account of the resemblance in the form and venation of 
the leaves to those of the Ginkgo-tree. 
This paper treats also of the Psilophyta of the formation, as well as 
of some new species of Sphenophyllum and Whittleseya: the Psilophyta 
are not thought to be typical of the genus. Six plates of fossils 
accompany this paper. 
(8) This article treats of some animal forms and of tracts of 
Batrachians and Articulates of this group. A Zeaia and a new genus 
of Merostome, Belinuropsis, are fully treated of, also the wings of two 
large insects are described. The footprints are partly of Batrachian 
and partly of ‘Crustacean’ type; three genera of the former are 
described, and three species of the latter; the Batrachian footprints 
are much like those of Batrachians of the Coal-measures, the others 
are attributed to insects or Arachnids, and are in consecutive series of 
tracks of various sizes. 
A series of plates represent these ancient and interesting footmarks 
left on the sands of this old Silurian series of strata. 
I1J.—Armenia. 
N 1906 we called attention in these columns to Dr. Felix Oswald’s 
book on the Geology of Armenia. This was followed the next 
year by his Explanatory Notes to accompany a Geological Map of 
Armenia, and we have now before us his final conclusions on the 
geological structure of this area, published in Petermann’s Geo- 
graphischen Mitteilungen, 1910, under the title of ‘‘ Zur tektonischen 
Entwicklungsgeschichte des armenischen Hochlandes”. The present 
paper is accompanied by a map showing the Tertiary fault-lines as 
a series distinct from those of older date; and seven panoramic views 
