150 G. F. MATTHEW ON CAMBRIAN FAUNAS 
D.—Horizon of PARADOXIDES TESSINI.—A different and probably somewhat higher 
horizon appears to be indicated by the species found at Chapel Arm in Trinity Bay. Mr. 
Billings described from this place— 
Paradoxides tenellus, Bill. 
P. decorus, Bill. 
Anopolinus venustus, Bill. 
Obolella (Linnarssonia) misera, Bill. 
Selenopleura communis, Bill. 
Agraulos socialis, Bill. 
In the pieces of limestone sent to me from this locality by Mr. Howley, I find in 
addition the following forms :— 
Eocystites, Sp. 
Agnostus lævigatus, Dalm. 
A. punctuosus, Ang., var. 
Agnosti of three other species. 
Microdiscus punctatus, Salt. 
There are fragments of a Paradoxides, which, by its hypostome, suture, pleuræ, and 
pygidium is very like P. Tessini, Brong. This is probably the P. decorus of Billings. 
The organisms from this locality are evidently a Menevian assemblage and equivalent 
to those of Band d in Division 1 of the St. John group. 
E.—Horizon of PARADOXIDES DAVIDIS.—In a black, silico-calcareous rock from High- 
land Cove in Trinity Bay, sent me by Mr. Howley, there were abundant remains of a 
large Paradoxides. The most important characters of the species are represented by the 
posterior half of the centre-piece of the head shield, by the free cheeks, by the long 
cylindrical genal spines, and by the peculiar hypostome ; the outlines and aspect of the 
parts preserved agree exactly with those of examples from the Swedish Primordial beds, 
figured by G. Linnarsson. ' 
Associated with this species, at this locality, are the following :— 
Centropleura Loveni, Ang. ? (Pygidium only.) 
Agnostus punctuosus, Ang., var. 
A. brevifrons, Ang. 
A, lævigatus, Dalm. 
A. Acadicus (Hartt), var. declivis, Matt. 
From the above lists of species, it will be seen that there is a fuller representation of 
the forms of Paradoxides in Newfoundland than is yet known from any other part of 
America, and a greater affinity also in the species of the faunas of the Paradoxides 
division to those of Europe. 
I] —Faunas OF THE OLENUS DIVISION. 
The species of the middle Cambrian appear to be inadequately represented in the 
Cambrian strata of Newfoundland. The measures are chiefly sandstones and flag-stones, 

1 De Undre Paradoxides lagren, Stockholm, 1883, Plate ii. 
