126 The American Geologist. August, i899 
which Scenella and a new genus Randomia are the most prominent. 
The Calyptreidse are represented by three minute species of Platyceras. 
A minute Modiolopsis was the only lamellibranch obtained, and this 
is scarce. 
The only brachiopods obtained were also quite small, and are of the 
genera Obolella and Kutorgina. 
A few valves of a minute crustacean were met with, which the 
author refers to the genus Aptychopsis. 
The most remarkable feature of this fauna is that no remains of trilo- 
bites were found in it. This is a very decicied departure from an im- 
portant charcteristic of all the Lower Cambriam faunas, in which trilo- 
bites play an important part. 
Dr. Matthew summarizes the points of distinction from the Cambrian 
faunas as follows: 
"I. Great preponderance of the tubeworms {Hyolithida , etc.) 
2. Absence or rarity of trilobites. 
3. Minuteness of the gasteropods. except Patellidae. 
4. Minuteness of the brachiopods. 
5. Minuteness of the crustaceans." 
Die Labrador/else des Westlichen Norwegetis. i. Das Labrador- 
fehgebiet bet Ekersund ujtd Soggendal. Von Carl Fred Kolderup. 
This important and exhaustive paper deals with one of the three 
areas of anorthosyte and associated rocks in western Norway. The 
district has not undergone regional metamorphism, so that the results 
are very helpful in the interpretation of similar eruptive areas where 
the phenomena are obscured by this process. The details are fully 
worked out. but for them reference must be made to the paper itself. 
In parts the paper is highly theoretical, but as this review is intended 
as an abstract, rather than as a criticism, no discussion of them will 
be undertaken. 
The intrusive rocks of this district have an areal extent of 145c 
km'., of which the anorthosytes cover 956, norytes and quartz-norytes 
25, monzonytes 78, adamellytes 150, and banatytes 250 km". 
Noryte is regarded as the central type of the rocks here occurring 
and the following chart is presented to illustrate relationships: 
Bronzite granite. 
i 
Adamellyte. 
Banatyte. 
Monzonyte. 
Quartz noryte. 
i 
Gabbro noryte Norvte Labradorite noryte Anorthosvte. 
1 . ■ 
Noryte bronzityte. 
. I ■ 
Ilmenite noryte. 
I 
Ilmenityte. 
