XXII. BULLETIN OF THE NATURAL HISTORY SOCIETY. 
Fossiliferous Horizons, etc. — ( Continued .) 
SAINT JOHN GROUP. 
| Division 1. 
Division 2. 
Division 1. 
Drv. 2. 
Division 3. 
a 
b j c 1 
c 2 
d 
a 
\b 
1 
c 
i 
a 
I 
b 
1 1 
c \c 
1 
d 
Tracks, Burrows & 
Trails — ( Continued ,) 
151 Monocraterion 
magnificum 
152 Arenicolites Lyelli, 
Torr, v. minor 
153 A. brevis 
154 Frsena ramosa 
155 Goniadichnites 
trichiformis 
Incerti sedis— 
156 Eocoryne geminum 
157 Lepidilla anomala 
* 
■3fr 
* 
* 
* 
* 
From this catalogue it will be seen that the middle and 
upper part of Division 1 in which the Cambrian fossils were first 
found, continues to be the richest collecting ground. Division 
2, as a comparatively barren ground, divides the lower from 
the upper faunas. Fossils of the lower orders prevail in the 
Basal Series; but the Hydrozoa, with a few exceptions, show 
themselves abundantly only in the Upper division (St. John 
Group). The Linguellae show their control of the Cambrian 
rocks by their uniform distribution; but the Trilobites, though 
abounding in the Upper and Lower divisions of the St. John 
Group, have left scarcely any remains in the intermediate strata. 
The Agnosti in this list are arranged in three groups or 
sections; Nos. 97-100 are Limbati; 101-106 ar z Longif routes; 
107-108 are Brevifrontes; the fourth section of this genus, 
Lcavigati , is unknown in the St. John Group. Of the three 
groups present it will be observed that the Limbati have the 
widest range, and that the Brevifrontes are confined to the 
horizon Id. 
